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Calculadora de descuentos: precio rebajado, porcentaje y ahorro

Introduce un precio y un porcentaje de descuento, con un segundo descuento opcional, para ver el precio final y cuánto ahorras, o calcula el precio original.

Calculadora

Precio rebajado

$
%
%
%

Opcional, se añade tras el descuento.

Pagas$24.00Ahorras $6.00 (20% de descuento)

Calcular el precio original

$
%
Precio original$26.67
$6.67Ahorro

¿Qué porcentaje de descuento es?

$
$

33.33%

Porcentaje de descuento. Ahorras $10.00 por artículo.

Los importes están en USD (United States seleccionado). Cambia el país o la moneda en la cabecera. Los tipos de cambio son aproximados, de una tabla estática actualizada el 2026-10-25: no son en tiempo real ni sirven para operaciones.

Estimaciones solo para planificar. No constituyen asesoramiento fiscal ni financiero. Última verificación: 2026-10-25

La guía detallada que aparece a continuación (explicación, ejemplo resuelto, limitaciones, preguntas frecuentes y fuentes) está por ahora solo en inglés.

Calculadora de descuentos: cómo funciona

A percentage discount takes that share off the original price, so the sale price is the original multiplied by one minus the discount. A 20% discount on 2,000 leaves 80% of the price, which is 1,600.

Stacked discounts do not add up. Each one applies to the price left after the previous one. 20% off followed by another 10% off multiplies 0.80 by 0.90 to get 0.72 of the original, so the real saving is 28%, not 30%. You can also work backwards: given a sale price and the discount, the original price is the sale price divided by one minus the discount.

This matters when a shop shows a headline such as 50% off and then offers a further voucher at checkout. Working out the true final price lets you compare it with a competitor's plain price, or with the same item at a different shop, before you decide whether the deal is real.

Fórmula e hipótesis

Fórmula

  • Precio rebajado = original × (1 − descuento %)
  • Dos descuentos: original × (1 − d1 %) × (1 − d2 %)

Hipótesis

  • El segundo descuento se aplica sobre el precio ya rebajado (no se suman los porcentajes).
  • No se incluyen impuestos.

Ejemplo resuelto

2,000 item with 20% off, then an extra 10% coupon

  1. After the first discount: 2,000 × 0.80 = 1,600.
  2. After the coupon: 1,600 × 0.90 = 1,440.
  3. Total saved = 2,000 − 1,440 = 560, which is 28% of the original.
  4. Reverse: a sale price of 1,440 after 28% off means the original was 1,440 ÷ 0.72 = 2,000.

Resultado: Final price 1,440; you save 560 (28%).

Limitaciones

  • Taxes are not included. Whether tax is charged before or after the discount depends on the shop and the country.
  • Buy-one-get-one, tiered, or minimum-spend offers are not modelled; use the equivalent percentage for those.
  • "Up to" discounts and inflated original prices are marketing; this calculator cannot tell whether the original price was genuine.
  • Shops may round each step, so the amount at the till can differ by a small amount.

Preguntas frecuentes

Is 20% plus 10% the same as 30%?

No. Stacked discounts compound, so 20% then 10% is 28% off in total.

How do I find the original price?

Divide the sale price by one minus the discount rate. If a 25% discount leaves 750, the original price is 750 ÷ 0.75 = 1,000.

Is a bigger percentage always a better deal?

Not if the base prices differ. 30% off an inflated price can cost more than 15% off a fair one. Compare final prices.

Does the order of two discounts matter?

No. 20% then 10% gives the same result as 10% then 20% because the multiplication is the same either way.

What is the difference between percent and percentage points in discounts?

Going from 20% off to 30% off is a 10 percentage-point change, but the price drops from 0.80 to 0.70 of the original, which is 12.5% lower.

How do I calculate a discount percentage?

Subtract the sale price from the original price, divide by the original price and multiply by 100. A price cut from 80 to 60 saves 20, and 20 ÷ 80 = 25% off. Enter both prices in the calculator to see the percentage and the amount saved.

What is 20% off $60?

20% of $60 is $12, so the sale price is $60 − $12 = $48. In one step, multiply the price by 0.80. The same method works for any price and any percentage, and the calculator also shows how much you save.

Fuentes

Datos de la calculadora verificados por última vez: 2026-10-25. Estimaciones solo para planificar; no constituyen asesoramiento fiscal ni financiero.

¿Y ahora qué?

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