When to use this calculator
Find a price after a single percentage discount. Taxes or delivery charges are excluded unless already included in the original price.
Explore the shopping & value calculators for other questions in this topic. For a related calculation, use the Multi Buy Unit Cost Calculator: Calculate the effective unit price of a fixed-price multi-buy offer.
PUTTING IT INTO PRACTICE
Discount: 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 |
|---|---|
| Original price | 80 |
| Discount (%) | 25 |
| Result | 60 currency units |
- Check the input labels and enter the example values above.
- Apply the relationship: Final price = original × (1 − discount/100).
- The result is 60 currency units, rounded for display.
How to interpret your result
Taxes or delivery charges are excluded unless already included in the original price.
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 discount calculator?
Enter original price, discount (%). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Final price = original × (1 − discount/100).
What should I check before using the result?
Taxes or delivery charges are excluded unless already included in the original price.
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.
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