# Unit Rate Calculator

Enter two quantities and their units of measure to calculate the unit rate.

## Calculated Rate:

5.714
feet per second (ft/s)
Learn how we calculated this below

## How to Calculate Unit Rate

Unit rate, or just rate, is a measure of the quantity of one thing compared to the amount of a different thing. For example, velocity or speed is a rate, which is the change in distance relative to the duration of time.

So, how do you calculate the rate given two different quantities? Start by using the unit rate formula:

rate = quantity 1 / quantity 2

Thus rate is equal to the quantity of unit one divided by the quantity of unit 2.

Rate is often expressed as quantity 1 per quantity 2, for example, miles per hour.

Thus, the rate can also be considered to be a fraction that is reduced so that the numerator is an expression over 1. Think of this as the number of miles per 1 hour.

Unit rates are often further simplified and expressed as just the numerator with the first quantity unit over the second. For instance, 25 miles/hour.

Unit price can also be considered a rate of price to the quantity. Try our unit price calculator to learn more.

## Rate Calculation Examples

For example, let’s find the rate of speed when you have traveled 100 miles in 4 hours.

rate = 100 miles / 4 hours
rate = 25 miles / 1 hour
rate = 25 miles/hour (mph)

For example, let’s find the rate of an engine that can turn a wheel 2500 revolutions in 10 minutes.

rate = 2500 revolutions / 10 minutes
rate = 250 revolutions / 1 minute
rate = 250 revolutions/minute (rpm)

For example, let’s find the flow rate for 75 gallons of fluid flowed over a 5-minute time period.

rate = 75 gallons / 5 minutes
rate = 15 gallons / 1 minute
rate = 15 gallons/minute (gpm)