DocomintCalculadora de Desconto
Calcule o preço promocional e o valor economizado a partir de um preço original e uma porcentagem de desconto.
What is a Calculadora de Desconto?
A one-step version of a calculation people usually do in their head at the register or while shopping online — enter the sticker price and the advertised discount to see exactly what you'll pay and exactly how much you're saving, without doing the percentage math yourself.
How to use the Calculadora de Desconto
- Enter the original price and the discount percentage
- Press Calculate
- The sale price and amount saved appear instantly, calculated on your device
Formula
Sale Price = Original Price × (1 − Discount% ÷ 100) | Amount Saved = Original Price − Sale Price
The discount percentage is subtracted from 100%, and the result is applied as a multiplier to the original price.
Example
A $80 jacket marked 25% off comes to a $60 sale price, saving $20 — useful for quickly comparing a "25% off" sign against a "$20 off" sign on an identical item to see they're actually the same deal here.
Common mistakes
- Adding two sequential discounts together instead of applying them one after another — 20% off followed by 10% off is not a flat 30% off.
- Confusing "25% off" (the discount) with the price you'll actually pay (75% of the original, not 25%).
- Entering the already-discounted sale price into the "Original price" field by mistake.
Frequently asked questions
How do you calculate a percentage discount?
Multiply the original price by the discount percentage to get the amount saved, then subtract that from the original price for the sale price. A $80 item at 25% off saves $20 (80 × 0.25), for a $60 sale price.
How do I calculate two discounts applied one after another?
Apply them sequentially, not by adding the percentages — a 20% discount followed by a 10% discount is not a flat 30% off. Run this calculator once for the first discount, then run it again using that result as the new "original price" for the second discount.
How do I calculate the original price from a discounted price?
Divide the sale price by (1 − discount% ÷ 100). A $60 sale price after a 25% discount implies an original price of $60 ÷ 0.75 = $80.
Does this include sales tax?
No — this calculates the discount off the listed price only. Sales tax, where applicable, is typically calculated separately on top of the discounted price at checkout.
Is my numbers uploaded anywhere?
No — Calculadora de Desconto runs entirely in your browser using JavaScript/WebAssembly. Your numbers is never sent to a server.