Case 1
- Original price
- 100
- Discount
- 20%
80.00
Open with these valuesDiscount Calculator
80.00
Result: 80.00The saving is the price times the percentage divided by 100; the final price is what is left. 20 % off 100 saves 20 and leaves 80. Two discounts do not add up: 20 % and then 10 % is 28 % off, not 30 %, because the second one is taken from the already reduced price.
The numbers at a glance
Held fixed: Original price 100.00.
| Discount (%) | Result |
|---|---|
| 0.00 | 100.00 |
| 5.00 | 95.00 |
| 10.00 | 90.00 |
| 15.00 | 85.00 |
| 20.00Your value | 80.00 |
| 25.00 | 75.00 |
| 30.00 | 70.00 |
| 35.00 | 65.00 |
| 40.00 | 60.00 |
Worked examples
Case 2
- Original price
- 49.99
- Discount
- 15%
42.49
Open with these valuesCase 3
- Original price
- 200
- Discount
- 25%
150.00
Open with these valuesHow it's calculated
Final price = price × (1 − discount ÷ 100)
- StepEnter the full price, in whatever currency you use.
- StepEnter the discount as a percentage — 20 for 20 % off.
- ResultRead the final price; the saving is the difference.
Reference table
| Price, discount (%) | You save | Final price |
|---|---|---|
| 100, 0 | 0 | 100 |
| 50, 10 | 5 | 45 |
| 49.99, 15 | 7.50 | 42.49 |
| 100, 20 | 20 | 80 |
| 200, 25 | 50 | 150 |
| 100, 100 | 100 | 0 |
Questions
How do I calculate a discount?
Multiply the price by the discount divided by 100 to get the saving, then subtract it. 100 at 20 % off is 100 × (1 − 0.20) = 80, a saving of 20.
How do I combine two discounts, like 20 % and then 10 %?
Stacked discounts multiply, they do not add. 100 at 20 % off is 80, then 10 % off 80 is 72 — a combined 28 % off, not 30 %, because the second discount comes off the already reduced price.
Does this include sales tax or VAT?
No. The calculator works on the price you enter and neither adds nor removes tax. If your shelf price excludes tax, the final price excludes it too.
What does a 100 % discount mean?
The whole price comes off, so the final price is 0 and the saving equals the original price. Anything above 100 % is meaningless for a single price, which is why the field stops there.
Which currency does the result use?
Whichever one you enter. Price and final price carry no currency symbol, so euros in means euros out, dollars in means dollars out.
Sources and last check
Information, not professional advice.