Calculate a sale price after a percent off

Discount amount = original × p/100. Sale price = original − that amount. p outside 0–100 is still computed if the engine allows, but a 100% off is a free item and over 100% would go negative — this page is meant for ordinary markdowns. Tax is not added.

Prix soldé = P × (1 − p/100)

Two successive discounts p and q: P × (1 − p/100) × (1 − q/100)

A single proportional markdown. Coupon “$10 off” is not this page unless you convert it to a percent yourself. US sales tax, if any, applies to the ticket the shop defines (pre- or post-discount); this calculator does not add tax. “Up to 50% off” marketing is not a number you should type unless that is the actual rate on the item.

Original price

The amount before this markdown.

Percent off

Percent off that amount. 0 leaves the price unchanged. 100 zeros it out.

Assumptions

• One percent applied once.
• No tax, shipping, or coupon stacking in the engine.

Limits

• Does not chain two percents in one click (multiply yourself or run twice).
• Not a check of advertised “lowest price” claims.

$60 is 75% of $80. A 25% decrease from 80 to 60 matches the percent-decrease page. If you will split a restaurant check instead of marking down a sticker, use the tip calculator — that adds a percent, it does not subtract one.

• Adding 20% + 15% and taking 35% off.

  Apply 20%, then 15% to the reduced price, or multiply 0.80 × 0.85 = 0.68 (32% combined off).

• Typing $25 as the percent field because the coupon is $25.

  This field is a percent. A $25 coupon on $80 is 31.25% off, or just subtract $25 by hand.

• TipFrom a bill and a percent, get the tip, the grand total, and an even per-person share. In many US full-service restaurants people leave about 18–20% of the check; that is a custom, not a legal minimum, and not a rating of the meal.
• Percent decreaseEnter an original amount and a smaller later amount. The result is the drop relative to the original — the same idea as a markdown, without applying a sale price formula.
• PercentageEnter two numbers of the same kind. The tool returns (part ÷ total) × 100 — useful for a test score, a slice of a budget, or a share of a count.
• Profit marginMargin puts profit over selling price; markup puts profit over cost. With $60 cost and $100 price, margin is 40% and markup is 66.7%. You cannot swap the two percents.
• Bill splitTotal, headcount, optional tip. Everyone pays the same share of bill + tip.
• Hourly to salaryThree numbers: hourly rate, weekly hours, paid weeks. The tool returns the week, the calendar month (year / 12) and the year.

Written by Rédaction HexaCalc (editorial team). Content last updated: August 25, 2026. No third-party medical or financial review is claimed.

This calculation uses a standard mathematical identity. See also the methodology.