20% off $100
Multiply 100 by (1 − 20 ÷ 100) = 0.8. The final price is $80.
Discount calculator
Find the price after a percentage discount.
Calculation details
Change the values to update the result instantly.
How it works
Find the price after a percentage discount. This free estimate is for planning purposes. Verify financial and tax decisions with a qualified professional.
How to calculate a discount
The calculator finds the final price with final price = original price × (1 − discount rate ÷ 100).
Finding the amount saved
Subtract the final price from the original price. For a $100 item at 20% off, you save $20.
Stacking two discounts
Apply each discount rate in sequence to the reduced price, since discounts are not simply added together.
Frequently asked questions
How do I find the price after a discount?
Multiply the original price by (1 minus the discount rate divided by 100). A $100 item at 20% off costs $80.
How much do I save with a 20% discount?
Subtract the discounted price from the original price. On a $100 item, a 20% discount saves $20.
What does the discount calculator calculate?
Find the price after a percentage discount.
Is this calculator free to use?
Yes. You can change the values and calculate as often as you need without creating an account.
How accurate is the result?
The result is an estimate based on the values you enter. Rates, fees, taxes and personal circumstances can change the final amount.