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Percent Off Calculator

Three questions in one tool: what a price comes to after a percent off, what percent off a markdown really is, and what the original price was before the discount. You can also stack an extra coupon and add sales tax.

Quick examples
$
%
%

A stacked coupon, taken off the sale price.

%
Your numbers stay in your browser. Nothing is uploaded.
You pay$40.00
Total percent off
20%
You save
$10.00
Original price
$50.00
Sales tax
$0.00

Saved setups

Save a set of inputs you reuse — your usual rate, your loan, your room sizes — and load it back in one tap.

    Your recent calculations

    Results you calculate here are kept on this device so you can come back to them.

      Formula

      Sale price = original price × (1 − percent off ÷ 100)
      Percent off = (original price − sale price) ÷ original price × 100
      Original price = sale price ÷ (1 − percent off ÷ 100)
      You pay = sale price × (1 − extra percent off ÷ 100) × (1 + sales tax ÷ 100)

      How to use it

      1. Choose what you want to find: the sale price, the percent off, or the original price.
      2. Enter the two numbers you know.
      3. Add an extra percent off if a coupon stacks on top of the sale.
      4. Add sales tax if you want the amount at the register.

      Worked examples

      20% off $50

      You pay
      $40.00
      You save
      $10.00
      Total percent off
      20%

      An $80 item marked down to $60

      Total percent off
      25%
      You save
      $20.00
      You pay
      $60.00

      A $45 sale price that is already 25% off

      Original price
      $60.00
      You save
      $15.00

      40% off $200 with an extra 15% coupon and 7.5% sales tax

      Total percent off
      49%
      You save
      $98.00
      Sales tax
      $7.65
      You pay
      $109.65

      Mental shortcuts

      For 10% off, move the decimal point one place left and subtract: 10% of $64 is $6.40. 20% is double that, 5% is half of it, and 15% is the two added together.

      For 25% off, divide by four and subtract. For 33% off, divide by three. For 50% off, halve it.

      Percentages are reversible: 8% of 50 is the same as 50% of 8, which is 4. Swap the numbers when one way round is easier.

      Finding the original price

      You cannot get back to the original price by adding the percentage to the sale price. If an item is $45 after 25% off, adding 25% gives $56.25, which is wrong. The sale price is 75% of the original, so divide: $45 ÷ 0.75 = $60.

      Questions people ask

      What is 20% off $50?

      $40. You save $10.

      What is 15% off $80?

      $68. You save $12.

      What is 30% off $60?

      $42. You save $18.

      What percent off is $80 marked down to $60?

      25% off. The $20 saving divided by the $80 original price is 0.25.

      Related calculators

      Discount CalculatorSale price and savings, with a stacked second discount and tax.Percentage CalculatorWhat is X% of Y, X is what percent of Y, and X is Y% of what.Percent Decrease CalculatorFind the % decrease between two numbers, or take a % off a number.Sales Tax CalculatorAdd sales tax to a price, or back it out of a total.Percent Change CalculatorPercentage change from an old value to a new one, up or down.