Ethereum unit converter in Ruby


Add this line to your application's Gemfile:

gem 'ethereum_unit_converter'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install ethereum_unit_converter


Convert from unit to unit

# EthereumUnitConverter.convert(amount, unit = 'wei', to_unit = 'ether')
EthereumUnitConverter.convert(10000, 'wei', 'eth') # "0.00000000000001"
EthereumUnitConverter.convert(1, 'eth', 'wei') # "1000000000000000000.0"
EthereumUnitConverter.convert(1, 'eth', 'tether') # "0.000000000001"
EthereumUnitConverter.convert(100, 'ada', 'eth') # "0.0000000000001"

Supported Units

  UNITS = {
    wei: 1,
    kwei: 1000,
    ada: 1000,
    femtoether: 1000,
    mwei: 1_000_000,
    babbage: 1_000_000,
    picoether: 1_000_000,
    gwei: 1_000_000_000,
    shannon: 1_000_000_000,
    nanoether: 1_000_000_000,
    nano: 1_000_000_000,
    szabo: 1_000_000_000_000,
    microether: 1_000_000_000_000,
    micro: 1_000_000_000_000,
    finney: 1_000_000_000_000_000,
    milliether: 1_000_000_000_000_000,
    milli: 1_000_000_000_000_000,
    ether: 1_000_000_000_000_000_000,
    eth: 1_000_000_000_000_000_000,
    kether: 1_000_000_000_000_000_000_000,
    grand: 1_000_000_000_000_000_000_000,
    einstein: 1_000_000_000_000_000_000_000,
    mether: 1_000_000_000_000_000_000_000_000,
    gether: 1_000_000_000_000_000_000_000_000_000,
    tether: 1_000_000_000_000_000_000_000_000_000_000


After checking out the repo, run bin/setup to install dependencies. Then, run rake test 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 the created tag, and push the .gem file to


Bug reports and pull requests are welcome on GitHub at


The gem is available as open source under the terms of the MIT License.