Swift decimal formatter. 2345 let formatter = NumberFormatter() formatter.

Swift decimal formatter I've been playing around with code I found on Stackoverflow; and in some instances they either rely on an array of keys/symbols without any boundary checking, or aren't complete, or You can get the Integer part like this: let d: Double = 1. If it had the There are many ways to format Swift’s numerical types (Float, Double, Decimal, and Integer) for display to the user. I've found links to a couple of similar questions (Precision String Format Specifier In Swift & How to use println in Swift to format number) but they seem to mix objective C and even talk about Python and using unity libraries. string(from: decimal as NSDecimalNumber) Is there a way to format currency using a compact version, for example instead of $1,500,000 show $1. 99") Currency formats using SWIFT 3. let output = formatter. 2. A format style that converts between decimal currency values and their textual representations. decimal if let formattedTipAmount = formatter. Specifically %. Style. 10". decimal if let formattedNumber = formatter. 12 10 @Rob : But my question was about String(format:). 23456e12 let intparttruncated = trunc(d) let intpartroundlower = Int(d) The trunc() function truncates the part after the decimal point and the Int() function rounds to the next lower value. FormatStyle. Performance and Usability. Note that this will create a new NumberFormatter every time this function is called. 0. 426123) Assuming you want to display the number on each of the l* labels: I have figured out some of it: func convertDoubleToString(number: Double) -> String { let formatter = NumberFormatter() formatter. I know how to do this in regular Swift by using &quot;%. The textField could group typed numbers (1000 -> 1 000, 50067 -> 50 067 etc) and limit the amount of numbers after the decimal point let formatter = NumberFormatter() formatter. forcing a number to be displayed with 2 decimal places using swift. 2. currency. "if the locale is nil. To learn more about the basics of the Swift Foundation Formatter API, take a look at my “Mastering Swift static let decimal: NumberFormatter = { let formatter = NumberFormatter() formatter. In conclusion, formatting decimal You can use Swift's round function to accomplish this. 0 let d2: Double = 1. decimal I need 20000. 34 creates a number 12 since dot is not valid at that point, and everything after it is ignored. 02f", tipAmount) If you want it to be fully dependent on the locale settings of the device, you should use a NumberFormatter. 67899 My desired result is a String: 1,123,455,432. 2340 1. As the user types, the bound value updates, which in turn updates three Text views that use different format styles. To round a Double with 3 digits precision, first multiply it by 1000, round it and divide the rounded result by 1000:. Stack Overflow (defined in the parent Formatter class) and avoid having to convert the value to an NSNumber. A formatter that converts between numeric values and their textual representations. So my output is rounded up to 2 decimal places as expected. decimal style, to allow entering a fractional part. 4. FormatStyle rather than NumberFormatter. How do I do You can use standard string formatting specifiers to round to an arbitrary number of decimal places. maximumFractionDigits = 4 formatter. – Rob NumberFormatter has a property called numberStyle. Double) or the cents will get truncated, this is a feature/bug of NumberFormatter) When formatting a number for the end user, I would recommend using NSNumberFormatter, which honors the user's current NSLocale. 64-bit Doubles are high enough in precision that they don't tend to have rounding errors when converted to strings, but the code you posed doesn't really do anything useful. 6. 000Z"); // ret1 is null let ret2 = I am working with NumberFormatter. If you always want two decimal places, then: static let decimal: NumberFormatter = { let formatter = NumberFormatter() formatter The great thing about Swift and SwiftUI is that all the same formatters are also available in Swift! Every example that was given above has also been included here using only Swift for those who Rounding a double value to x number of decimal places in swift Closed 8 years ago. How can I display two decimal digits for a Float number in a string? Maybe I misunderstood the question, but to me it seems that OP actually wants to change the default value of numberFormatter. 51000000000) . currency formatter. Swift: Formatting time string based on number of seconds. In many (highly upvoted) answers to questions about "rounding a decimal number" we find the proposition String(format:). 234. E. My app used to rely on standard iOS Numpad Keyboard as a textField. update: Xcode 8. – Moriya. 000) while also generating a number appropriate for the current locale?. 23556789 let y = Double(round(1000 * x) / Update for Swift 4. As per my understanding, OP actually wants to keep the precision of the values and only wants to add the decimal separator Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company You can simply filter non digits or periods from the original string, try to coerce the resulting string to integer. 59) price. let distances = "0. Is there no Swift solution to How to format decimal in Swift to percentage. I tried to set the locale with Formatter. e. numberStyle = NumberFormatter. Double() supports about 17 digits of precision. string(for: enteredOdds) Note the rounding is done for you. To navigate the symbols, press Up Arrow, Down Arrow, Left Arrow or Right Arrow . floor formatter. 3 and 17. iOS Swift: Formatting a custom Currency Number. let decimal = Decimal(11. Btw returning a "magic" string is bad practice IMO. IOS SWIFT 4 convert String to Decimal with Locale. maximumFractionDigits = 2 The mapping between decimal floating point and binary floating point isn't exact. decimal to leave it as number without "$" sign. Add this somewhere before body: let numberFormatter: NumberFormatter = { let formatter = NumberFormatter() formatter. 1f&quot;, but that does not work in SwiftUI. Rounds the floating number and strips the trailing zeros to the required minimum/maximum fraction digits. The FormatStyle API offers a declarative idiom for customizing In Swift, there are several ways to format decimal places, including using string interpolation, NSNumberFormatter, and the Decimal struct. 7. Then I want to re load the number however I have been unable to find a way to convert string value into a decimal. 0. 7 to 0. You can use the String(format: ) method to specify the number of decimal places you want to display. Data formatting in Swift. Apple added a much easier way to work with date, number and other data formatters in iOS 15 and macOS 12. When working in Swift, use formatted methods directly on the types you want Use NumberFormatter - A formatter that converts between numeric values and their textual representations. maximumFractionDigits = fractionDigits Result Using NumberFormatter is a good solution, here is an example on how to convert in Swift 3. decimalValue With Swift 5, NumberFormatter has an instance property called minimumFractionDigits. struct Number { static let withSeparator: NumberFormatter = { let formatter = NumberFormatter() formatter. text = formatter. number(from: "9,999. integer) / 100) as NSNumber) But with this locale for example the textfield doesn't work anymore? The formatter isn’t producing the decimal value. usesGroupingSeparator = false formatter. based on location (US/Europe). 70 , I am unable to to do that , type double is always No need to create a NSNumber object from your integer. 2f", 10. Let's take just one example, one of the how to show 2 decimal places regardless of the number of digits after decimal in swift? 4. The Swift Language and Number Formatting . 2300 1. import UIKit extension Formatter { static let withDecimalSeparator: A format style that converts between decimal currency values and their textual representations. Therefore, in the simplest case when you want to format a number with decimal style, you can use the following Playground code: I'm trying to figure out the right way to format a Decimal number as a currency value in Swift. generatesDecimalNumbers = true formatter. 5. usesGroupingSeparator = true // example for writing the number object into a label // your variable "numberFromString" needs to be a NSNumber object I am trying to format currency input in a textfield in Swift as the user inputs it. Performing arithmetic. 234 from 123234234234 depends on what the user types into the text field. 456) print(x) // 123. You can create your own FormatStyle. decimalSeparator = ". string(from: The problem I'm having is that Decimal is a struct, so I have to bridge it to an NSDecimalNumber every time I want to use a formatter, which I'd like to avoid. roundingMode = . let amountInUSD: Decimal = 10000 I use formatter to be able to convert Decimal number to string with respect of the maximumFractionDigits. public struct DecimalPrecision<Value>: FormatStyle, Equatable, Hashable, Codable where Value : BinaryFloatingPoint{ let maximumFractionDigits: Int public func format(_ value: Value) -> String { let formatter = NumberFormatter() formatter. minimumFractionDigits = 1 formatter. maximumFractionDigits = 8 return formatter }() I want to let formatter to receive fractions like 1/3, 1/10, 5/115 and convert it into decimal number. 10. So you can do one of 2 things: 1 - use alphanumeric or custom keyboard where you allow to type , and not . A Double or Float or any BinaryFloatingPoint type cannot have a value that is rounded to some (non-zero) number of decimal places in general, because almost all such values are not representable in any binary floating-point type. decimal return formatter }() Hello all, I've been investigating and trying to code a compact number format otherwise known as a short scale formatter or a humanizing big numbers into smaller ones in Swift. 1. current // this ensures the right separator behavior formatter. Swift ; Objective-C ; API changes: Show; All Technologies . minimumFractionDigits = 2 formatter. That is easy, you could implement it in many different ways, but the important part is you have your app for example localized in let's say two language that treats decimals and thousands with Can't use literals (because Swift has only double precision floating point literals): let x = Decimal(123. However, @Berik claims that wouldn't work exactly for every possible Decimal Swift 4 . groupingSeparator = " " formatter. I'm trying to figure out the right way to format a Decimal number as a currency value in Swift. numberStyle can be set to a value of NumberFormatter. locale = Locale. decimal let formattedNumber = numberFormatter. 1415). 67899 Best case correct , and . Swift The whole formatting logic lives outside of the concrete type. Each of the following options can be used by the Percent Format Styles Simple formatting syntax for decimal numbers, currency, mass, addresses, ordinal numbers and hexadecimal colors. I formatted before, so I need to remove the formatting, so just need plain number, doesn't matters if it is string or number in return. 2345 let formatter = NumberFormatter() formatter. Userdefaults does not allow for the saving of long decimal numbers, so I resorted to turning the value into a string and saving it. . – Duncan C This is great and simple! But I work on an finance app and let the user change his currency, so I somehow need to set this on the textfield. 2345 1. inputView. Just change the return type to optional and return nil or simply force unwrap the result if it will never fail. So far, I can only format it successfully when the user finishes inputting: @IBAction func editingEnded(sender: UITextField display formatted as currency without decimal. Note that in Swift 3 NSNumberFormatter has been renamed NumberFormatter. 2 You can use NumberFormatter() to convert your string to number. Force NSTextField to Only Accept Decimal (#. These format styles typically expose an instance of this type as a variable, called parse Strategy. decimal in order to set the formatter's style to decimal. formatted(. currentLocale() formatter. In this blog, we will explore each method with code examples. percent formatter Parsing with a format style. 2f", number) } One way to format decimal places in Swift is by using string interpolation. 2345, // 1. maximumFractionDigits = 2 oddsLabel. The Swift Foundation defines many different types conforming to the FormatStyle protocol, allowing encapsulation of the formatting logic. 3. decimalValue getter:. To perform the opposite conversion — from formatted output type to input data type — some format styles provide a corresponding Parse Strategy type. For example, if the Decimal contains the value 25. trimmingCharacters(in: Yes, that's yet another reason to not force format change for current locale. maximumFractionDigits = 0 let result = formatter. func customFormat(_ number: Double) -> String { let customFormatter = NumberFormatter() customFormatter. The question asks how to convert a Decimal to a String, not how to convert a String to a Decimal. How to add a Zero at the end of the decimal string in swift3. for decimal Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I am trying to display the value of a Slider in SwiftUI, but I only want one decimal place to show. Format Style rather than Measurement Formatter. maximumFractionDigits = 1 statLabel. Format timer label to hours:minutes:seconds in Swift. date(from: "2017-09-04T04:14:37. If successful set the formatter maximum fraction digits to zero otherwise set the maximum fraction digits to 2 and coerce the string to double: In Swift, you can use Measurement. number. 0 /* As of Version 5. The Foundation framework has a variety of formatters for working with dates, numbers, lists, Ok so it looks your concern here could be solved by making a first round implementation of your first solution, where you only need to think about localization of , and . string Swift Formatting String to have 2 decimal numbers if it is not a whole number. maximumFractionDigits = 15 The String struct provides an instance method that can be used to remove characters based on a given CharacterSet. 0000 1. 000Z is a valid ISO8601-formatted date, ISO8601DateFormatter cannot parse it. currencyCode = isoCodeStr formatter. I have the following Float: 1123455432. decimal let number = formatter. let formatter = NumberFormatter() formatter. number(from: textValue) I have a formatter. 30" let flt = CGFloat((str as NSString). Limit UITextField to one decimal point Swift. The CGFloat is just a number (so 17. g. decimal return formatter }() } let You can address this in two ways (a) pre-divide the number by 100 before passing it to the formatter or (b) set the formatter's multiplier property to 0. Can someone tell me why this happening? let formatter = NumberFormatter. minimumFractionDigits = 4 let values: [Double] = [ 1, // 1. > String { var string = "" let formatter = NumberFormatter() formatter. Just like how a DateFormatter can be used to format Date values in various ways, the NumberFormatter class ships with a quite comprehensive suite of formatting tools that are all Decimal is bridged with NSDecimalNumber, which is a subclass of NSNumber so NSNumberFormatter can handle it. It brings about a very reliable and efficient environment for I like to use TextField's new format: API, e. In my app I am dealing with currency which is need to upto two decimal digit , I have used number formatter for this to display up to two decimal place but When I want this double value up like 0. How to format Decimal in Swift 3. minimumSignificantDigits = 0 formatter. Swift language, developed by Apple, is a powerful and intuitive programming language for iOS, macOS, watchOS, and beyond. 23, // 1. func twoDecimals(number: Float) -> String{ return String(format: "%. extension Double { func toString(minimumFractionDigits: Int = 0, maximumFractionDigits: Int = 2) -> String { let formatter = NumberFormatter() formatter. My 2 cents ;) Swift 3 ready. locale = NSLocale. currencyISOCode if let formatterStr: String = formatter. let price = Decimal(1_500_000. I don't want to manage currency, it's not about currency, it is about the user has to type in a number and this number should be for Swift 3: let formatter = NumberFormatter() formatter. formatter. groupingSeparator = "," formatter. 5M" to convert it to 2 decimals. Import Format at the top of the Swift file with the content you would like to Convert numbers, dates, measurements, and other values to and from locale-aware string representations. Also, Foundation caches identical Format Style instances, so you don’t need to pass them around your app, or risk wasting memory with duplicate formatters. generatesDecimalNumbers to true and you'd call formatter. Once . Modified 3 years, 2 months ago. minimumFractionDigits has the following declaration: var minimumFractionDigits: Int { get set } The minimum number of digits after the decimal separator allowed as input and output by the receiver. maximumFractionDigits = 2 formatter. description calls NSDecimalString(&value, nil), and that sets the decimal separator to ". numberStyle = . string(from: In Swift, how would you create an NSNumberFormatter that would preserve trailing zeros after a decimal (12. 5 of 50 symbols inside 1197116447 containing 92 symbols. struct ContentView: View { @State var amount: Decimal = 0 // always use Decimal for money @Environment(\. I need help formatting decimal places in a Text Field using Swift 4. You just need to specify the decimalSeparator as follow: extension String { static let numberFormatter = NumberFormatter() var doubleValue: Double { String. 5M (and similar to thousands, billions and trillions)?. numberFormatter. " // Default separator is dependent to the current local. decimal formatter. locale) private var locale // body will be called if they change their currency. Convert decimal to hours:minutes:seconds. 234, // 1. Text field for currency Swift. I am using userdefaults to save a decimal value of unknown length ( I. locale = Locale(identifier: "en_US") // or "en_IN" or whatever return formatter }() Decimal places. 01 (Note: in this latter case you must still pass the number to be formatted as floating point (e. 0000 0, // 0. And here I get confused: From the source code it looks to me as if passing nil for the locale makes the You're probably looking for a number formatter that's configured for decimals. current formatter. For instance, numbers can be set in a compact form using number. For the former case, you wouldn't need to set formatter. string(from:(Double(string. current if you want to change locale you can do it like this. doubleValue) + 2. maximumFractionDigits = You can convert formatted numbers and currency using the NumberFormatter class. 23456 // 1. maximumFractionDigits Real-time NumberFormatter Validation of TextField Input - edw/swiftui-numberfield He wrote that he wants just the number but your answer still adds formatting in form of extra decimals. number(from: string). The first step is to define a new type (class) that will be inheriting Although, 2017-09-04T04:14:37. 30 is the same value for it); what you're really concerned is how to set the String representation of your CGFloat number. format currency - remove decimals. let fractionDigits = 18 let formatter = NumberFormatter() formatter. The Format Style API offers a declarative idiom for customizing the formatting of various types. Seemingly, it happens when the string that represents an ISO8601-formatted date contains fractions of a second: let formatter = ISO8601DateFormatter() let ret1 = formatter. maximumFractionDigits = 2 let v = 36 let scale = 10 let float = formatter. Instead, let’s use Foundation’s NumberFormatter to solve our decimal problem. Display a Float with specified decimal places in SwiftUI. 24) let formatter = In Swift, you can use IntegerFormatStyle, FloatingPointFormatStyle, or Decimal. groupingSeparator = "" formatter. down customFormatter. " Decimal and Grouping separator are not correct: func setAmountString (amountValue: Int, isoCodeStr: String) { let formatter = NumberFormatter() formatter. maximumSignificantDigits = 10 return formatter. Formatting Currency - Swift. The recipe to implement a custom formatter is relatively simple. Ensuring their correct formatting is crucial, hence requiring the need to focus on formatting decimal places in Swift. You could pass the string through a decimal formatter to get the underlying number, and then back again through the formatter to get a formatted string: Format a number to string with thousand separators and always has 2 digits after decimal point in swift. 456 is 123456. minimumFractionDigits = 0 formatter. SwiftUI String formatting is rounding my values to nearest whole number? 0. r P. string(from: NSNumber(value:largeNumber)) Swift 3 The problem in the code lies in the line exactly you mentioned: output = formatter. Just a quick follow-up answer for noobs like me: You can make the other answers super easily implementable by using a function with an output. var NumerWithDecimalPoint : String{ if self != ""{ let numberFormatter = I am writing an app in swift and have used the below code . 1 I'd want this to print as "$25. For example, to format these numbers to two decimal places, you might do something like: Count number of decimal places in a Float (or Decimal) in Swift. Swift 4. locale = Locale(identifier: "en_US_POSIX") Format string with trailing zeros removed for x decimal places in Swift [duplicate] Ask Question Asked 9 years, 7 months ago. Binary floating point values don't have an intrinsic number of decimal places. notation:. You can use a Parse Strategy one of two ways:. maximumFractionDigits = 1 Large decimal number formatting using NumberFormatter in Swift. For the other direction: Decimal(string) creates a Scanner and then calls scanDecimal. Modified 2 years ago. 42. string(from: int as NSNumber) { string = formattedTipAmount } return string } You can use this string initializer if you want to force the currency to $: String(format: "Tip Amount: $%. Ask Question Asked 5 years, 3 months ago. I want to format number to this: 123. How to change the string in seconds to minutes in Swift3? 8. In this case, you can use the letters and whitespaces character sets to isolate your decimal value and then create a Decimal from it. When we use the Slider view to select a value, we have to use a Double value and this causes a problem, because when it’s time to show the value in a Text view, number 34 My function is converting a string to Decimal func getDecimalFromString(_ strValue: String) -> NSDecimalNumber { let formatter = NumberFormatter() formatter. To have greater flexibility you can use formatter and leverage appendInterpolation on string. 6, Swift does not support Decimal literals. @adamovitch is calling the NSNumber. The same for returning a float or double value to a fixed number of decimal places. notation(. How do I convert Float to Int When Necessary? 58. string(from: NSNumber(value: balance)) // result: $1,234,567 You can change formatter. stringFromNumber(3. 9 mil" let decimal = Decimal(string: distances. nf where n is the number of decimal places you require: let twoDecimalPlaces = String(format: "%. #) Numbers and Periods. compactName)) // "1. Commented Nov 4, 2015 at 17:18. 1 • Swift 3. 23 should be 20,000. decimal let decimal = Decimal(integerLiteral: 3) let string = formatter. static func * (Decimal, Decimal) -> Decimal. If Skip to main content. how have hour:minutes:seconds in Date Picker swift. let x = 1. Hence when using Decimals to represent numbers with more than 17 digits of precision, it is crucial to never do anything that would convert the Decimal's value to a Double. 45599999999997952 Can't use Decimal(string:) because it has this unexpected and undocument There is an alternative in those circumstances; to create our own custom formatters. As an alternative to @vadian:s solution, you can make use of an NSNumberFormatter as follows /* Your CGFloat example */ let str = "17. current // USA: Locale(identifier: "en_US") formatter. string(from: NSNumber(value: Double(lengthTextFieldValue)! * 12)) From the source code one can see that Decimal. Swift - Remove Trailing Zeros From Double. DecimalStyle formatter. numberStyle to . – The formatter uses the Number Formatter. numbers. Because of this, the operation only makes sense as a formatting operation, which converts to a decimal string. number(from: input)?. You can use Formatter's method string(for: Any) instead. isLenient = true formatter. And typing 123. string(from: NSNumber(value: number))! Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company let d1: Double = 20000000. A parse strategy for creating decimal values from formatted strings. locale = Locale(identifier: "es_CL") text = Formatter. Initialize the data type by calling an initializer of that type Thus let formatter = NSNumberFormatter(), set minimumFractionDigits and maximumFractionDigits to however many digits you want, and then you can do let string = formatter. maximumFractionDigits, which is actually 3 (if you test your code without setting it to 3, you get the exact same result). let largeNumber = 31908551587 let numberFormatter = NumberFormatter() numberFormatter. Use the below function or something to that effect. is not a decimal separator, typing 12. This is working well. This will take into account the number of decimal places for the currency as well as positioning the currency symbol correctly. let formatter: NumberFormatter = { let formatter = NumberFormatter() formatter. I'm looking for a way using a formatter or a direct string format and not via string manipulation, to remove the trailing zeroes, so to print: 10. Decimal() supports up to 38 digits of precision. If you are trying to dictate the number of decimal places, then simply remove this significant digits stuff: let formatter = NumberFormatter() formatter. 1 currency string: let balance = 1234567 let formatter = NumberFormatter() formatter. string(from: number), not formatter. init() formatter. Custom Number Formatter in Swift. 2346 if SwiftUI: formatting decimals in Text view . Viewed 13k times Part of Mobile Development Collective 10 I have a function which finds percentage difference of adjacent values in an array. 23 for that I create an extension . My current code and example output: let formatter = NSNumberFormatter() formatter. raqg azykm tbanhoh inot izmi hjvofyw zzm agt wpql qrip