Discount calculator
Calculator
The calculator needs JavaScript. The tables below give the same numbers for common cases.
How it is worked out
- Discount: 25% of $80.00 = $20.00.
- Sale price: $80.00 − $20.00 = $60.00.
| Inputs | Answer |
|---|---|
| 80, 25 | $80.00 with 25% off is $60.00 (you save $20.00). |
| 60, 30 | $60.00 with 30% off is $42.00 (you save $18.00). |
| 19.99, 15 | $19.99 with 15% off is $16.99 (you save $3.00). |
How to use it
The discount is the percent of the original price; the sale price is the original minus the discount. $80 with 25% off: 25% of $80 = $20, so you pay $60.
For stacked discounts, apply them one after another to the new price: 20% off then another 10% off is not 30% off, it is 28% off.
Frequently asked questions
How do I calculate 30% off?
Multiply the price by 0.70 to get the sale price.
Are two discounts of 20% and 10% the same as 30%?
No. 100 × 0.8 × 0.9 = 72, so the total saving is 28%.
Does this include tax?
No. Use the sales tax calculator on the sale price to add tax.
Method: standard arithmetic shown step by step; no outside data is used. Checked 2026-11-12.
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General information only. Results are plain arithmetic on the numbers you enter; check anything important (money, health, school work) against your own records or the official source.