SellstampFree business calculators
Margin and markup, break-even, loan payments, sales tax and VAT, and currency conversion, with the formula and a worked example on every page, so you can check the number rather than trust it.
Margin and markup are the two most often confused; both calculators show the other figure beside the one you asked for.
Profit margin calculator
Cost and price to margin, or a target margin to the price that hits it.Business loan calculator
Monthly payment and total interest on an amortising loan.Markup calculator
Cost plus markup to price, and price back to markup.Break-even calculator
Fixed costs, price and variable cost to the units that clear them.Sales tax and VAT calculator
Tax on top of a net price, or backed out of a gross one.Currency converter
31 currencies at the ECB's published daily reference rate.