Unit Rate Calculator
Find cost per unit, compare two product deals, and estimate totals from a known rate. Built for shopping decisions, classroom math, and everyday budgeting.
Enter values and click Calculate to see the unit rate result.
How To Use Unit Rate
Unit rate answers the question: how much for one unit? It is the fastest way to compare two options with different quantities.
Formula
Unit rate = Total amount / Quantity
Example: $8 for 10 bottles means $0.80 per bottle.
Compare Deals
Compute unit rate for each option. The lower number is usually the better deal, assuming product quality is similar.
Common Unit Rate Examples
Shopping
- - Cost per ounce
- - Cost per paper towel roll
- - Cost per tablet or capsule
Travel
- - Miles per gallon
- - Minutes per mile
- - Cost per mile
Work
- - Dollars per hour
- - Units produced per hour
- - Revenue per customer
Frequently Asked Questions
What is a unit rate?
A unit rate is a rate where the second quantity is 1. For shopping, it usually means price per one item, ounce, pound, or liter. Unit rates make it easy to compare products with different package sizes.
How do I calculate unit rate?
Divide the total amount by the quantity. Example: if 12 apples cost $9, then unit rate is 9 / 12 = $0.75 per apple.
How do I compare two deals?
Calculate unit rate for each option, then compare the results. The lower unit rate is the better value. You can also multiply the difference by your planned quantity to estimate total savings.
Where are unit rates used in real life?
Unit rates are used for grocery shopping (cost per ounce), fuel economy (miles per gallon), wages (dollars per hour), internet speed (megabits per second), and business metrics such as revenue per customer.
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