Discount Calculator

Calculate sale price, savings, or original price

Formula

Sale Price = Original × (1 - Discount%). Discount % = (Original - Sale) / Original × 100. Savings = Original - Sale.

Percent discounts multiply. Fixed discounts subtract. Stack discounts sequentially, not additively.

How to Calculate Manually

1
Select what you want to calculate
2
Enter the known values
3
Choose percent or fixed discount
4
Calculator shows result and savings

Reference Table

Original	10% Off	20% Off	30% Off	50% Off	75% Off
$10	$9.00	$8.00	$7.00	$5.00	$2.50
$25	$22.50	$20.00	$17.50	$12.50	$6.25
$50	$45.00	$40.00	$35.00	$25.00	$12.50
$100	$90.00	$80.00	$70.00	$50.00	$25.00
$200	$180.00	$160.00	$140.00	$100.00	$50.00
$500	$450.00	$400.00	$350.00	$250.00	$125.00

Discount Calculator: Calculate Sale Price, Savings, and Original Price

Discounts are everywhere - retail sales, coupons, promo codes, clearance events. Understanding how to calculate the true cost after a discount helps you make smarter purchasing decisions. A '50% off' sale sounds great, but is it really a good deal?...

Frequently Asked Questions

How do I calculate 20% off? Multiply original price by 0.20 to get discount amount. Subtract from original: $100 × 0.20 = $20 off. Final: $80.: Multiply original price by 0.20 to get discount amount. Subtract from original: $100 × 0.20 = $20 off. Final: $80.
What if I know the sale price and want the original? Divide sale price by (1 - discount%). Example: $80 sale at 20% off → $80 ÷ 0.80 = $100 original.: Divide sale price by (1 - discount%). Example: $80 sale at 20% off → $80 ÷ 0.80 = $100 original.
How do stackable discounts work? Apply sequentially: 20% off then 10% off $100 → $100 × 0.80 = $80 → $80 × 0.90 = $72. Not 30% off ($70)!: Apply sequentially: 20% off then 10% off $100 → $100 × 0.80 = $80 → $80 × 0.90 = $72. Not 30% off ($70)!

Calculator

Formula

Formula

How to Calculate Manually

Reference Table

Discount Calculator: Calculate Sale Price, Savings, and Original Price

Frequently Asked Questions

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