Calculate sale prices, savings, and final cost after discount. Optionally add sales tax for the true checkout price.
Fill in the fields above and click calculate. All calculations run instantly in your browser — no data is sent anywhere.
Sale Price = Original Price × (1 − Discount% ÷ 100). This is the S (Subtract) step in GEMS.
Yes — enter your local sales tax rate and get the final price after both discount and tax.
Use the Percentage Calculator: ((Original − Sale) ÷ Original) × 100 = Discount%.