Discount Calculator
Calculate sale prices, savings, reverse discounts, original prices, and stacked double discounts instantly. Includes a bulk reference table and step-by-step working.
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Enter values above — results appear instantly.
Quick examples
| Original | Discount | You Save | Final Price |
|---|---|---|---|
| $50 | 10% off | $5.00 | $45.00 |
| $50 | 20% off | $10.00 | $40.00 |
| $50 | 25% off | $12.50 | $37.50 |
| $100 | 10% off | $10.00 | $90.00 |
| $100 | 20% off | $20.00 | $80.00 |
| $100 | 25% off | $25.00 | $75.00 |
| $100 | 30% off | $30.00 | $70.00 |
| $100 | 50% off | $50.00 | $50.00 |
| $150 | 20% off | $30.00 | $120.00 |
| $150 | 30% off | $45.00 | $105.00 |
| $200 | 15% off | $30.00 | $170.00 |
| $200 | 25% off | $50.00 | $150.00 |
| $200 | 40% off | $80.00 | $120.00 |
| $500 | 20% off | $100.00 | $400.00 |
| $500 | 30% off | $150.00 | $350.00 |
| $500 | 50% off | $250.00 | $250.00 |
Click any row to load it into the calculator.
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Buy me a coffeeHow to Calculate a Discount
Whether you're checking a Black Friday deal, figuring out how much you saved on a sale, or calculating trade discounts for your business — the maths is the same. This calculator handles four types of discount problems in real time.
# The discount formula
Savings = Original Price × (Discount% ÷ 100)
Final Price = Original Price − Savings
# Or in one step:
Final Price = Original Price × (1 − Discount% ÷ 100)
% Off → Final Price
The standard calculator. Enter original price and discount % to see exactly what you pay and how much you save.
Reverse — Find the %
Know original and final price but not the discount? Enter both and the tool tells you what percentage off you received.
Find Original Price
Paid a sale price and want to know what it was before? Enter the sale price and discount % to reverse-engineer the original.
Double Discount
Two discounts stacked (e.g. 20% off then extra 10% off). See the price after each step and the true effective discount.
Common Discount Examples
What is 20% off $50?
$50 × 0.20 = $10.00 savings → Final price: $40.00
What is 10% off $100?
$100 × 0.10 = $10.00 savings → Final price: $90.00
What is 25% off $80?
$80 × 0.25 = $20.00 savings → Final price: $60.00
What is 30% off $150?
$150 × 0.30 = $45.00 savings → Final price: $105.00
What is 15% off $200?
$200 × 0.15 = $30.00 savings → Final price: $170.00
What is 50% off $400?
$400 × 0.50 = $200.00 savings → Final price: $200.00
Frequently Asked Questions
- How do you calculate a discount?
- Multiply the original price by the discount percentage, then divide by 100 to get the savings. Subtract savings from the original price for the final price. Formula: Final Price = Original Price × (1 − Discount% / 100).
- What is 20% off $50?
- Savings = $50 × 0.20 = $10. Final price = $50 − $10 = $40. So 20% off $50 is $40.
- What is 10% off $100?
- 10% of $100 = $10. Final price = $90.
- What is 25% off $80?
- 25% of $80 = $20. Final price = $80 − $20 = $60.
- What is 30% off $150?
- 30% of $150 = $45. Final price = $150 − $45 = $105.
- What is 50% off $200?
- 50% of $200 = $100. Final price = $100.
- How do I find the original price before a discount?
- Divide the final (sale) price by (1 minus the discount as a decimal). Example: You paid $75 after a 25% discount. Original = $75 ÷ (1 − 0.25) = $75 ÷ 0.75 = $100.
- How do I calculate what percentage off I received?
- Discount% = ((Original Price − Final Price) ÷ Original Price) × 100. Example: Paid $60, was $80. Discount = ((80 − 60) ÷ 80) × 100 = 25%.
- How do I calculate a double (stacked) discount?
- Apply each discount sequentially — never add percentages together. Example: 20% off then extra 10% off $100: After 20% = $80. After 10% of $80 = $8. Final price = $72. The effective discount is 28%, not 30%.
- What is the difference between discount and markdown?
- A discount is a temporary price reduction — a sale or coupon. A markdown is a permanent reduction to the listed price. Both are calculated the same way, but markdowns adjust the baseline price permanently.
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