Ecommerce & Shopping

Discount Calculator

Calculate the final sale price and exact savings amount from any discount percentage.

Whether you're shopping a Black Friday sale, running a promotion, or negotiating a bulk order, this calculator instantly shows you the final price and exactly how much you save. Works with any discount percentage and original price.

Enter your numbers

Original Price ($)

Discount (%)25

Results update as you change the inputs. Calculations run in your browser.

Sale Price

$90.00

you Save: $30.00
savings Pct: 25% off
original Price: $120.00

See the formula

Formula and method

Sale Price = Original × (1 - Discount%) ; Savings = Original × Discount%

Direct percentage reduction. The discount percentage is applied to the original price to find savings, then subtracted to get the final price.

Worked examples

Black Friday 30% off a $200 item

Original Price ($):: 200
Discount (%):: 30

Sale Price: $140.00

Bulk order 15% discount

Original Price ($):: 850
Discount (%):: 15

Sale Price: $722.50

Assumptions and limits

Discount applied to pre-tax price
Simple flat percentage discount

This tool provides an educational estimate. Rules, rates and personal circumstances can change the answer. Review the assumptions before relying on a result. Report a correction.

Common mistakes to avoid

Applying two percentage discounts additively — a 20% off followed by 10% off is NOT 30% off; it's 28% off.
Confusing "% off" with "% of" — 25% off means you pay 75% of the original price.
Not checking if the discount applies before or after tax — in Canada, HST is applied to the discounted price, not original.

Frequently asked questions

If an item is 20% off and then 10% off, what is the total discount?

Not 30%. The first discount gives you 80% of original; the second takes 10% off that, leaving 72% of original — so 28% total off. This is called stacking discounts and is less favorable than a flat 30%.

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

Divide the sale price by (1 - discount%). For example: a $75 item at 25% off came from $75 / 0.75 = $100 original.

What is a good discount percentage for ecommerce?

10-15%: Small incentive. 20-25%: Good conversion booster. 30-50%: Strong promotional event. 60%+: Clearance or loss-leader territory. Research shows 20-30% discounts maximize both conversion and margin.