humanize_fraction

Rubygem to convert fraction to words, like 1 ⅓ => one and a third. Examples:

"1/8".humanize_fraction
#=> "one eighth"

"1/8".humanize_fraction(shorthand: true)
#=> "an eighth"

"-2 3/4".humanize_fraction
#=> "negative two and three fourths"

"-2 3/4".humanize_fraction(quarter: true)
#=> "negative two and three quarters"

"222/333".humanize_fraction
#=> "two hundred and twenty-two three hundred thirty-thirds"

"1/1000000000000000000000000000".humanize_fraction(shorthand: true)
#=> "an octillionth"

If you don't want to monkey patch String, you can also use the Humanizer class directly:

# From a string:
fraction = HumanizeFraction::Humanizer.from_string("2 1/4")

# From integers:
fraction = HumanizeFraction::Humanizer.new(
  whole_part: 2,
  numerator: 1,
  denominator: 4,
)

fraction.to_s
#=> "two and one fourth"

fraction.to_s(shorthand: true, quarter: true)
#=> "two and a quarter"

Installation

Add this line to your application's Gemfile and execute bundle to install:

gem 'humanize_fraction'

If you wish to use the monkey-patched String#humanize_fraction, add the following into an initializer/config:

require 'humanize_fraction'
String.include(CoreExtensions::String::HumanizeFraction)

Development

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.