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

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

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 | 805 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 mm30 minutes is to 3 hours as what is to 60 seconds | 10 seconds