You can parse a string into an integer with int.parse(). For example:
var myInt = int.parse('12345');
assert(myInt is int);
print(myInt); // 12345
Note that int.parse() accepts 0x prefixed strings. Otherwise the input is treated as base-10.
You can parse a string into a double with double.parse(). For example:
var myDouble = double.parse('123.45');
assert(myDouble is double);
print(myDouble); // 123.45
parse() will throw FormatException if it cannot parse the input.
Flutter
api.flutter.dev › flutter › dart-core › double › toString.html
toString method - double class - dart:core library - Dart API
For all doubles, d, converting to a string and parsing the string back gives the same value again: d == double.parse(d.toString()) (except when d is NaN). String toString(); Flutter · dart:core · double · toString abstract method ·
DhiWise
dhiwise.com › post › flutter-string-to-double-converting-data-with-precision
Flutter String to Double: A Step-by-Step Guide
April 3, 2025 - These topics include the role of radix in conversion, dealing with infinity and limits in double, and understanding the toString method. In Dart, the parse method can take an optional radix parameter.
Videos
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Flutter - How To Convert A String into a double/int (Dart Type ...
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#11 - Dart Built-in Types - num, int, double, String, List, Set, ...
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What are the different methods to convert a string to a double in Flutter?
The primary methods are:
- Using the double.parse() function
- Using the double.tryParse() function for error handling
- Using the num.parse() function for more flexibility
dhiwise.com
dhiwise.com › post › flutter-string-to-double-converting-data-with-precision
Flutter String to Double: A Step-by-Step Guide
Why is it necessary to convert strings to doubles in Flutter?
Converting strings to doubles is crucial when dealing with numerical input from users or when working with data that requires numerical calculations. It ensures that your Flutter app can process and manipulate numerical values correctly.
dhiwise.com
dhiwise.com › post › flutter-string-to-double-converting-data-with-precision
Flutter String to Double: A Step-by-Step Guide
What are some best practices for converting strings to doubles in Flutter?
- Validate user input before conversion to prevent errors.
- Use appropriate error handling mechanisms to handle parsing failures gracefully.
- Consider using double.tryParse() for safer conversions.
- Format the output appropriately based on the context.
dhiwise.com
dhiwise.com › post › flutter-string-to-double-converting-data-with-precision
Flutter String to Double: A Step-by-Step Guide
Top answer 1 of 13
491
You can parse a string into an integer with int.parse(). For example:
var myInt = int.parse('12345');
assert(myInt is int);
print(myInt); // 12345
Note that int.parse() accepts 0x prefixed strings. Otherwise the input is treated as base-10.
You can parse a string into a double with double.parse(). For example:
var myDouble = double.parse('123.45');
assert(myDouble is double);
print(myDouble); // 123.45
parse() will throw FormatException if it cannot parse the input.
2 of 13
164
In Dart 2 int.tryParse is available.
It returns null for invalid inputs instead of throwing. You can use it like this:
int val = int.tryParse(text) ?? defaultValue;
Codecademy
codecademy.com › docs › dart › type conversion › .tostringasfixed()
Dart | Type Conversion | .toStringAsFixed() | Codecademy
May 23, 2024 - In Dart, .toStringAsFixed() is a method used to convert numeric data types, typically used with double, to a string representation with a fixed number of decimal places.
YouTube
youtube.com › codemy.com
Convert Strings, Ints, and Doubles With Dart - Learn Dart Programming 10 - YouTube
In this video we'll learn how to convert strings to integers, and integers and doubles to strings.Converting Strings to integers and doubles in Dart is prett...
Published May 25, 2022 Views 3K
Codecademy
codecademy.com › docs › dart › type conversion › .parse()
Dart | Type Conversion | .parse() | Codecademy
June 4, 2024 - In Dart, the .parse() method is used to convert a string representation of data into a specified data type. It is commonly used to parse strings into numeric values, such as integers or doubles.
Flutter
api.flutter.dev › flutter › dart-core › double › parse.html
parse method - double class - dart:core library - Dart API
Rather than throwing and immediately catching the FormatException, instead use tryParse to handle a potential parsing error. Examples of accepted strings: "3.14" " 3.14 \xA0" "0." ".0" "-1.e3" "1234E+7" "+.12e-9" "-NaN" external static double parse(String source); Flutter · dart:core ·
CloudHadoop
cloudhadoop.com › dart-convert-double-string
How to convert Double to String or String to double in Dart
February 17, 2024 - Homes with integrated smart systems sell 17% faster than conventional properties, as buyers increasingly prioritize technology-enabled features that promise convenience, security, and energy efficiency in today's competitive real estate market.
Dart Tutorial
darttutorial.org › home › dart tutorial › dart double
Dart double - Dart Tutorial
May 27, 2022 - void main() { String priceStr = "1.55"; double price = double.parse(priceStr); print(price); }Code language: Dart (dart) In this example, we convert the string "1.55" to a double.
Medium
medium.com › @letmeflutter123 › convert-double-to-string-flutter-d6a22394869
Convert Double To String Flutter. In this post, we will see how to… | by Zeeshan Ali | Medium
July 21, 2023 - In this post, we will see how to convert double to string Flutter using an easy Dart example. We will explain the conversion practically using step by step approach for better understanding.
YouTube
youtube.com › watch
Flutter Convert Int Double Number Value to String & Show Int Double Value Directly in Text Widget - YouTube
Hello friends, In today's tutorial we will learn about converting Integer, Double value to String format in Dart Flutter.
Published April 13, 2024
Dart
api.dart.dev › dart-core › double-class.html
double class - dart:core library - Dart API
Truncates this num to an integer and returns the result as an int. ... Provide a representation of this double value. ... An exponential string-representation of this number.
Medium
mudassirmairaj18.medium.com › dart-basics-type-conversion-conversion-between-different-data-types-in-dart-425560b7e593
Dart Basics — Type Conversion | Conversion between different data types in dart | by Mudassir Mairaj | Medium
February 8, 2023 - Finally, converting a double or integer to a string can be achieved using the .toString() method, as shown in the following example:
Codecademy
codecademy.com › docs › dart › type conversion › .tostringasprecision()
Dart | Type Conversion | .toStringAsPrecision() | Codecademy
Converts a number to a double and returns a string representation with the specified number of significant digits.
Devsheet
devsheet.com › code-snippet › string-to-double-conversion-in-flutter-dart
String to double conversion in flutter [Dart] - Devsheet
The method double.parse(value) takes the value as a required parameter and returns the value in double type format. In the code snippet, we have defined a string format variable named val that needs to be converted to a double type format.
deltrance
deltrance.com › blogs › dart-date-formatting-or-how-to-convert-date-to-string-double-to-currency-in-flutter
Dart date formatting or How to convert Date To String & Double to Currency in Flutter?
import 'package:intl/intl.dart'; main() { double flutterBalance = 94510.60; final oCcy = new NumberFormat("#,##0.00", "en_US"); String formatted = oCcy.format(flutterBalance); print(formatted); // something like 94,510.60 }
Dart
dart.dev › language › built-in-types
Built-in types
February 24, 2026 - To create a multi-line string, use a triple quote with either single or double quotation marks:
Medium
murtazasulaihi.medium.com › dive-into-dart-int-double-num-652c440bf427
Dive into Dart: 'int', 'double', 'num'. Numeric Flexibility in Dart by Murtaza Sulaihi | Medium
January 4, 2024 - Additionally, we delve into data type conversion — a skill every Dart programmer must master. Learn how to seamlessly transition between ‘int’, ‘double’, and ‘String’, ensuring your code remains flexible and adaptable to diverse input scenarios.