Price Comparison Percentage Calculator
Compare two prices to see the percentage difference, how much cheaper one is and the value per unit when sizes differ.
Compare Your Options And Get Clear Answers
Compare two prices to see the percentage difference, how much cheaper one is and the value per unit when sizes differ.
Price Comparison Percentage Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Unit Price
Price ÷ quantity for each item.
Percent Difference
(Unit price A ÷ unit price B − 1) × 100.
Choose
Lower unit price is better value if you will use it all.
Use As A Guide
Results are estimates based on your inputs. Check real quotes, rates and professional advice before deciding.
Percent Difference Guide
Examples of price comparisons.
| Price A | Price B | A vs B | Meaning |
|---|---|---|---|
| $8 | $10 | −20% | A is 20% cheaper |
| $45 | $50 | −10% | A is 10% cheaper |
| $12 | $10 | +20% | A is 20% dearer |
| $25 | $25 | 0% | Same price |
| Rule of Thumb | Compare unit price | Check pack sizes | Watch for waste |
Price Comparison Percentage Calculator FAQ
Answers to common questions about this calculator.
Divide one price by the other, subtract 1 and multiply by 100.
The price per gram, litre, sheet or other standard unit, allowing fair comparison of different sizes.
Not always. Check the unit price and whether you will use it all.
Yes, as long as both items use the same unit.