# Rates

First-rate rate handling

A rate is a quantity of one unit to in relation to another

``````3 hours / day                                        | 3 hours/day
\$99 per week                                         | \$99.00/week``````

Soulver also supports rates with no unit

``````30 bottles / week                                    | 30/week
30/week as / month                                   | 130/month``````

``\$20/day + \$300/week                                  | \$440.00/week``

And convert them into other compatible forms

``€30/day in €/month                                   | €913.11/month``

A simplified rate is also produced from a division of units of different kinds:

``90 km / 3 day                                        | 30 km/day``

Units of rates of the same unit category cancel each other out when dividing:

3 hours / 3 days = 0.0416667

This is essentially the first number as a proportion of the second number (10,800 s / 259,200 s), expressed as a decimal.

If you would rather express this proportion as a simplified rate, use a converter:

3 hours / 3 days as hour/day = 1 hour/day

### Multiplying rates

``````\$50/week × 12 weeks                             | \$600.00
\$24 a day for a year                            | \$8,765.82
500/day to / year                               | 182,621.25/year``````

Here are some convenient built-in phrases for doing calculations with rates

``````30 hours at \$30/hour                                | \$900.00
\$500 at \$20/hour                                    | 25 hours``````

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