Discount Calculator
Calculate the sale price and amount saved with a discount.
How to use this tool
- Enter original price and discount in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your final price and the full breakdown beneath it.
Calculate the sale price and amount saved with a discount.
⚠ This tool provides general estimates for education only and is not financial, tax or legal advice. Figures may not reflect your situation — verify with a qualified professional.
Formula
Amount Saved = Original Price × Discount (%) ÷ 100
Final Price = Original Price − Amount Saved
Final = Price × (1 − Discount ÷ 100)
How it works
This calculator applies a straight percentage discount to an original price to find how much the buyer saves and what they ultimately pay. The discount amount is computed by multiplying the original price by the discount rate divided by 100, and that amount is then subtracted from the original price. The calculation assumes a single-tier, flat percentage discount with no minimum purchase requirements or stacking rules.
Tax, shipping, and other fees are not included; apply those separately to the final price if needed.
Worked example
- Original price = $100; Discount = 20%
- Amount saved = $100 × 20 ÷ 100 = $20
- Final price = $100 − $20 = $80
Final price = $80; You save = $20
Common mistakes to avoid
- Applying discounts sequentially rather than on the remaining price — two 10% discounts do not equal 20% off; the second 10% is on the already-reduced price, giving 19% total.
- Calculating the discount on the final price instead of the original price, understating the saving amount.
- Forgetting sales tax: the discounted price may still have tax applied, so the actual out-of-pocket cost is higher than the sale price shown.
Key terms
- Discount rate
- The percentage by which an original price is reduced to arrive at the sale price.
- Sale price
- The price the buyer pays after the discount has been deducted from the original price.
- Savings amount
- The absolute dollar reduction in price resulting from the discount.
- Original price
- The listed or retail price before any discount is applied; the starting point of the calculation.
Frequently asked questions
- If an item is 20% off a $50 price, how much do I save?
- $50 x 0.20 = $10 saved; final price = $40.
- Are stacked discounts additive?
- No — each discount applies to the price after the previous discount. A 10% discount followed by another 10% gives 0.90 x 0.90 = 0.81, or 19% off the original price.
- What is the formula for reverse-calculating the original price from a discounted price?
- Original Price = Sale Price / (1 - Discount / 100). For example, $80 at 20% off: Original = $80 / 0.80 = $100.