Home › Calculators › Discount Calculator

Discount Calculator

Work out the sale price and exactly how much you save, including stacked discounts. Enter the original price and one or two discount percentages, and the calculator returns the final price plus total savings. Ideal for sale shopping, coupon stacking and store promotions — everything is computed privately in your browser.

Original price

Discount (%)

Additional discount (%) — optional

What is a discount?

A discount is a reduction from the original, or list, price of a product or service, usually shown as a percentage. When a store says '20% off', you pay 80% of the original price and 20% is taken off. Percentage discounts are the most common form because they scale naturally: 20% off a ₹500 item saves ₹100, while the same 20% on a ₹2,000 item saves ₹400. There are also flat discounts, where a fixed amount is removed regardless of price. The part that trips up many shoppers is stacking — applying a second discount to an already-reduced price, as happens with coupons or clearance sales. Stacked discounts do not simply add up: 20% then a further 10% is a 28% total reduction, not 30%. This calculator handles both single and stacked discounts, so you always see the true final price before you pay.

Example

An item is $100 with 20% off. The calculator gives a sale price of $80 and savings of $20. Add a second 10% discount and the sale price drops to $72, with total savings of $28 — because the second discount applies to the already-reduced $80, not the original $100.

Who is this discount calculator for?

This discount calculator helps any shopper or budgeter see the true final price and real savings on a sale, coupon or stack. It is built for people comparing offers who want the exact number they will pay.

Young adults: Build the habit of checking the real price before buying so you can tell a genuine deal from an inflated markdown.
Students: Stretch a tight budget by comparing the final price across student discounts, coupon codes and clearance sales.
Couples: Plan shopping and shared spending by totalling how much seasonal sales and stacked coupons really save you.
Retirees: Budget fixed income carefully by seeing the exact amount off and the final price before you commit.

Discount percentage table

Final price and savings for an original price of $100 at common discount percentages.

Discount	Amount off	Sale price
10%	$10.00	$90.00
20%	$20.00	$80.00
30%	$30.00	$70.00
50%	$50.00	$50.00
75%	$75.00	$25.00

Sale price = original × (1 − discount ÷ 100). Each row was recomputed with python3 from a $100 original price.

Common use cases

Checking how much a seasonal sale or coupon actually saves you.
Comparing one big discount against two stacked smaller ones.
Finding the final price when a coupon stacks with a store promo.
Verifying a retailer's 'was now' price against the listed discount.

Pro tips

Stacked discounts multiply, not add — 20% then 10% is 28% off, not 30%.
A huge discount is not always a deal if the starting price was inflated.
Round the final price up when you are estimating a budget.
Check price history before trusting a big 'discount' — some sales inflate the original.

How to use

Enter the original price.
Enter the discount percent.
Optionally add a second discount for stacked promotions.
Click Calculate to see the final price and total savings.

Discount Calculator FAQs

How do I calculate a discount?

Multiply the original price by the discount percent and divide by 100 to find the amount off, then subtract that from the original price.

How do I calculate the sale price?

Sale price = original × (1 − discount ÷ 100). For 20% off $100, that is 100 × 0.8 = 80.

Do stacked discounts add up?

No. Each discount applies to the already-reduced price, so they do not simply add. 20% then 10% is 28% off, not 30%.

How do I find the original price from a sale price?

Divide the sale price by (1 − discount ÷ 100). A $72 price after 20% off is 72 ÷ 0.8 = $90.

How do I calculate the discount percent between two prices?

Discount % = (original − sale price) ÷ original × 100. A price moving from $100 to $80 is a 20% discount.

What is 20% off $100?

20% off $100 gives a sale price of $80 and savings of $20.

What is the difference between a percentage discount and a flat amount off?

A percentage discount scales with the price, while a flat amount is fixed. The same $50 off is a larger percentage on a cheaper item.

Does tax apply before or after a discount?

Discounts are generally applied to the pre-tax price first, then tax is calculated on the discounted amount.

What is a percent-off discount?

It is a reduction from the original price given as a percentage, giving the final price you actually pay.