Discount Calculator
Enter an original price and a percent off. The calculator shows what you’d pay, how much you save, and — where it helps — a Fox Insight about what the discount really means.
How to calculate a discount
A “percent off” is the share of the price you don’t pay. Multiply the original price by 1 − percent / 100:
sale price = original × (1 − percent / 100)
The amount saved on its own is original × percent / 100. So 25% off means you pay 75% of the price.
Worked examples
- 25% off $80: 80 × 0.75 = $60 (you save $20).
- 30% off $49.99: 49.99 × 0.70 ≈ $34.99 (you save about $15).
- 15% off $120: 120 × 0.85 = $102 (you save $18).
Discount table
What you pay, and what you save, on a $50 and a $100 item:
| Percent off | Multiplier | $50 → pay | $100 → pay |
|---|---|---|---|
| 10% off | × 0.90 | $45 | $90 |
| 15% off | × 0.85 | $42.50 | $85 |
| 20% off | × 0.80 | $40 | $80 |
| 25% off | × 0.75 | $37.50 | $75 |
| 33% off | × 0.67 | $33.50 | $67 |
| 50% off | × 0.50 | $25 | $50 |
| 70% off | × 0.30 | $15 | $30 |
Frequently asked questions
How do I calculate a percentage discount?
Subtract the percent from 100, turn it into a decimal, and multiply the price. For 25% off $80: 100 - 25 = 75%, so 80 x 0.75 = $60.
How do I find the original price before a discount?
Divide the sale price by the discount multiplier, don't add the percent back. A $60 price after 25% off started at 60 / 0.75 = $80.
Do two discounts add together?
No. 20% off then another 20% off is not 40% off. $100 becomes $80, then $64 — an effective discount of 36%.
Is '25% off' the same as 'paying 25%'?
No — it's the opposite. 25% off means you pay 75% of the original price; you save the 25%.