Discount, Markup and Gross Margin
ConvertEverything runs locally in your browser — nothing is uploaded
The three modes sit together because they are three directions of one question: what does this sell for, and what is made on it. Two things are easy to invert: · A fold discount and “percent off” are complements. Paying 80% of the price is the same as 20% off. The tool gives the fold, the percentage and the share you pay, so neither reading can be missed. · Gross margin and markup use different denominators. Margin divides by the price; markup divides by the cost. Cost 100, price 150: margin is 33.33% (50 ÷ 150) and markup is 50% (50 ÷ 100). Both are “half added on”, yet the figures differ — without naming the denominator they never reconcile. Margin mode also gives the price that hits a target margin, which is usually the number wanted when setting a price. Everything runs in your browser.
Features
- Discount: sale price, savings and the share paid, with the Chinese fold and the English percentage together
- Markup: cost and markup give the price, gross profit, margin and markup rate
- Margin: cost and price give both the gross margin and the markup rate
- ⚠️ Each rate states its denominator: margin divides by price, markup by cost
- ⚠️ No mental arithmetic between a fold discount and “percent off” — all three figures are given
- Gives the price needed for a target margin (price = cost ÷ (1 − target margin))
- Amounts are handled in whole cents and always shown with two decimals
- Runs entirely in your browser
How to use
- Choose the mode: discount, markup or margin
- Enter the matching input (price, cost, or cost and price)
- Set the discount, markup or target margin
- The result gives the price, the profit and the two different rates
FAQ
- What does a fold discount actually take off?
- It means paying 80% of the price, so 20% off. The Chinese fold states the share paid while the English percent-off states the reduction; they are complements. Entering 20 here means 20% off, and the result says “you pay 80%”, so the two directions cannot be confused.
- Why do margin and markup differ?
- Because the denominators differ. Gross margin is profit divided by price; markup is profit divided by cost. With cost 100 and price 150 the profit is 50: margin is 50 ÷ 150 = 33.33% and markup is 50 ÷ 100 = 50%. When a shop says “a 50% markup” it usually means the latter; the margin on a report is the former.
- How do I work out the price to charge?
- Use price = cost ÷ (1 − target margin). With cost 100 and a 40% target, the price is 100 ÷ 0.6 = 166.67. Enter the target in margin mode and this row appears.
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