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BigDecimal provides an arbitrary-precision decimal floating-point number class.


Add this line to your application's Gemfile:

gem 'bigdecimal'

And then execute:

$ bundle

Or install it yourself as:

$ gem install bigdecimal

For RubyInstaller users

If your Ruby comes from RubyInstaller, make sure Devkit is available on your environment before installing bigdecimal.

For Chocolatey

I don't have enough knowledge about Chocolatey. Please tell me what should I write here.

Which version should you select

The differences among versions are given below:

version characteristics Supported ruby version range
3.0.0 You can use BigDecimal with Ractor on Ruby 3.0 2.5 ..
2.0.x You cannot use and do subclassing 2.4 ..
1.4.x and subclassing always prints warning. 2.3 .. 2.7
1.3.5 You can use and subclassing without warning .. 2.5

You can select the version you want to use using gem method in Gemfile or scripts. For example, you want to stick bigdecimal version 1.3.5, it works file to put the following gem call in you Gemfile.

gem 'bigdecimal', '1.3.5'


TODO: Write usage instructions here


After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to


Bug reports and pull requests are welcome on GitHub at


BigDecimal is released under the Ruby and 2-clause BSD licenses. See LICENSE.txt for details.

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