Rates & Proportions

First-rate rate handling

Rates are simplified for you automatically:
90 km / 3 day                                    | 30 km/day
You can add/subtract and convert rates:
$20/day + $300/week                              | $440.00/week
€30/day in EUR/month                             | €210.00/week
Rate-related phrases
Here are some convenient built-in phrases for doing calculations with rates:
30 hours at $30/hour                                | $900.00
$500 at $20/hour                                    | 25 hr
Proportions / Rule of Three
Known as the rule of three, these phrases help you find the required number to maintain a proportion.
6 is to 60 as 8 is to what                     | 80
5 is to 10 as what is to 80                    | 40
These phrases also work with units:
5 km is to 500m as 5 cm is to what                       | 5 mm
30 minutes is to 3 hours as what is to 60 seconds        | 10 seconds

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Unit Conversions

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Last updated 2 weeks ago