Discount Calculator
Calculate discounts instantly. Enter the original price and either a percentage off (e.g., 20%) or a fixed amount off (e.g., $15) to get the sale price and how much you save. Perfect for sales, clearance, and pricing.
Discount Type
Enter original price and discount to see results
Table of Contents
What is a Discount Calculator?
A discount calculator helps you find the sale price and savings when a discount is applied to an original price. You can work with either a percentage off (e.g., 20% off) or a fixed amount off (e.g., $15 off). The calculator shows the final price you pay and how much you save.
Discounts are common in retail, promotions, and clearance sales. Whether you're a shopper checking a sale price or a business setting discounted prices, this tool gives you instant results without mental math.
How it Works
Our discount calculator supports two modes:
- Percentage Off: Enter the original price and the discount percentage (e.g., 25%). Use the presets (10%, 15%, 20%, 25%, 30%, 50%) or type any percentage. The calculator shows the discount amount, sale price, and percent off.
- Fixed Amount Off: Enter the original price and the discount in dollars (e.g., $20 off). The calculator shows the sale price and the effective percent off.
Results update automatically as you type. All calculations run in your browser; no data is sent to any server.
Discount Formulas
Percentage Off
Discount Amount = Original Price × (Percent ÷ 100)
Sale Price = Original Price − Discount Amount
Example: $100 with 20% off → Discount = $20, Sale price = $80.
Fixed Amount Off
Sale Price = Original Price − Discount Amount
Percent Off = (Discount Amount ÷ Original Price) × 100
Example: $100 with $25 off → Sale price = $75, 25% off.
Common Use Cases
- Shopping: Check the final price when a store advertises "X% off" or "$Y off"
- Retail & sales: Set sale prices from a target percentage or amount off
- Clearance: Work out prices for clearance and end-of-season sales
- Coupons: See the price after a fixed coupon amount (e.g., $10 off $50)
- Promotions: Compare "20% off" vs "$15 off" for the same item
- Budgeting: Estimate spending when planning for discounted purchases
Examples
Example 1: 20% Off
Original price: $80
Discount: 20%
Discount amount: $80 × 0.20 = $16
Sale price: $80 − $16 = $64
Example 2: $30 Off
Original price: $120
Discount: $30 off
Sale price: $120 − $30 = $90
Percent off: ($30 ÷ $120) × 100 = 25%
Example 3: 50% Off (Half Price)
Original price: $44
Discount: 50%
You save: $22
Sale price: $22
Frequently Asked Questions
Percentage off is a discount based on the original price (e.g., 20% off $100 = $20 off, sale price $80). Fixed amount off is a set dollar reduction (e.g., $15 off $100 = sale price $85, which is 15% off). Use percentage when you see "X% off" and fixed amount when you see "$Y off" or a coupon value.
For percentage off, the calculator accepts 0–100%. More than 100% would make the sale price negative, which isn't meaningful. For fixed amount off, the discount must be less than the original price so the sale price stays positive.
Yes. The math is the same for any currency. The calculator displays results with a $ symbol, but you can treat the numbers as your local currency (e.g., £, €). The percentage off and formulas are currency-independent.
Results are shown to two decimal places. Stores may round differently (e.g., to the nearest cent or to a psychological price like $9.99). For exact till or accounting values, use the calculator's figures; for display prices, apply your usual rounding rules.
No. All calculations run in your browser. We do not send or store your prices or discounts on any server.