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proj4dart

Proj4dart is a Dart library to transform point coordinates from one coordinate system to another, including datum transformations (Dart version of proj4js/proj4js).

3.0.0 668K downloads/mo #441 most downloaded on pub.dev maRci002/proj4dart

What this package is like to depend on

Last release 9 months ago

06 Nov 2025

Release timing varies

gaps range from 3 weeks to 3.2 years

Nearly every release is documented

notes for 9 of 9 stable releases

Nothing withdrawn

no release was ever pulled

6 years old

9 releases · first in 2020

1 release in the last 12 months

see the full history below

Release timeline

9 releases · Feb 2020 to Nov 2025
2021 2022 2023 2024 2025 2026
Release Pre-release

Releases

latest 9
  1. 3.0.0 06 Nov 2025
    Release notes
    • Update minimum Dart version to 3.0.0.
    • Update dependencies.
    Open source →
    Release notes
    • Update minimum Dart version to 3.0.0.
    • Update dependencies.
    Open source →
  2. 2.1.0 20 Aug 2022
    Release notes
    • Nadgrids support
    Open source →
    Release notes
    • Add nadgrids support
    Open source →
  3. 2.0.0 25 Mar 2021
    Release notes
    Open source →
    Release notes
    Open source →
  4. 1.0.5 14 Apr 2020
    Release notes
    • If WKT is Mercator projection then internal EPSG:3857 will be used
    • If WKT definition contains an encapsulated proj4 string definition then it will be used
    Open source →
  5. 1.0.4 23 Mar 2020
    Release notes

    This is v1.0.4 synced with proj4js/proj4js bc110c85709088a6bdd3a18557…

    Open source →
    Release notes
    • Named Projection returns null instead of throwing Exception if Projection not found by name
    • Some tests precalculate worst closeTos because these may depend on Dart version / OS
    Open source →
  6. 1.0.3 21 Mar 2020
    Release notes
    • add meta.dart to pubspec.yaml (avoid pub warning)
    Open source →
  7. 1.0.2 21 Mar 2020
    Release notes
    • Support ProjectionTuple
    • Support Projection.parse
    • Add more definitions
    • Add more tests
      • support exception compare
      • use blacklist when necessary
      • make closeTo even strict
    • Update wkt-parser-dart
    • fix axis order in some cases
    Open source →
  8. 1.0.1 05 Mar 2020
    Release notes
    • Support OGC WKT definitions
    • Support ESRI WKT definitions
    • Simplify globals logic
    Open source →
  9. 1.0.0 27 Feb 2020
    Release notes
    • Initial version
    • Can use 3 predefined projections + 5 aliases
    • Can create and use any custom projections with Proj4 string
    • Forward and inverse transformation between projections
    • Tested with ~4000 existing projections (from epsg.io)
    Open source →

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