This percentage calculator puts nine common questions in one place: what share one value is of a total, what amount a percentage represents, increase and decrease rates, discounts, tax, tips, simple compound growth, and markup-based pricing. Each mode returns the money-side result that belongs with the percentage instead of showing only a percent sign.
Percentage problems are usually confusing because the question type is unclear, not because multiplication is difficult. “What percent is 25 of 200?” and “What is 25% of 200?” use different inputs. Discount, decrease, markup, and margin also describe different business meanings. Choose the mode first, then read the percentage and amount together.
For a two-term ratio, use the ratio calculator. For decimal and fraction conversion, use the decimal fraction converter. If you need a specific rounding rule after the calculation, use the rounding calculator.
The page has nine modes:
Calculate Percentage: find what percentage a value is of a total.Calculate Value: find the amount represented by a percentage of a total.Calculate Increase: find the signed change and relative increase from an original to a final value.Calculate Decrease: interpret the same pair as a reduction and report the reduction amount and rate.Calculate Discount: find the discount rate, change amount, and savings from an original and final price.Calculate Tax: find tax and the tax-inclusive total from a before-tax amount and tax rate.Calculate Tip: find tip and the bill total from a bill amount and tip rate.Compound Growth: grow one starting amount at a fixed rate for a number of periods.Markup Calculation: find selling price and profit from cost and a markup rate.It supports percentage, value, increase, decrease, discount, tax, tip, compound-growth, and markup modes.
Increase and decrease describe general change, while discount is framed around an original price, final price, and savings and requires the final price not to exceed the original.
Tax uses the entered before-tax amount and tip uses the entered bill amount; the page does not infer local tax, service-fee, or tipping rules.
No. It grows one starting amount at a fixed rate for a number of periods and does not include contributions, fees, taxes, or cash flow.
No. The current page does not include a reverse-percentage mode; it calculates forward results for its listed modes.
Calculate percentages, values, change rates, discounts, tax, tips, compound growth, and markup profit.