When to use this calculator
Compare purchases by calculating their price per unit. Convert quantities to the same unit before comparing different packs.
Explore the shopping & value calculators for other questions in this topic. For a related calculation, use the Reading Time Calculator: Estimate reading time from a word count and reading speed.
PUTTING IT INTO PRACTICE
Unit Price: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Total price | 12 |
| Quantity | 3 |
| Result | 4 per unit |
- Check the input labels and enter the example values above.
- Apply the relationship: Unit price = total price ÷ quantity.
- The result is 4 per unit, rounded for display.
How to interpret your result
Convert quantities to the same unit before comparing different packs.
Compare quantities on a common unit basis. Apply successive discounts to the reduced price each time. A low unit cost only creates value if the quantity is useful and additional purchase costs are considered.
Frequently asked questions
Can I simply add two discount percentages?
No. A second discount applies to an already reduced price, so the remaining-price factors must be multiplied.
How do I use the unit price calculator?
Enter total price, quantity. The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Unit price = total price ÷ quantity.
What should I check before using the result?
Convert quantities to the same unit before comparing different packs.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
Calculators Map editorial process · Updated · Methods and limitations