Business Calculators — Margin, Markup, ROI & Break-Even

12 live calculators · free, instant & private

Pricing & Margins

Profit margin calculatorFree, instant and private — runs entirely in your browser.Open calculator →Break-even calculatorFree, instant and private — runs entirely in your browser.Open calculator →Discount calculatorStacked discounts done properly — 20% then 10% is 28% off, not 30%.Open calculator →Markup calculatorFree, instant and private — runs entirely in your browser.Open calculator →

Tax & Billing

Sales tax calculatorAdd tax or strip it back out, with state and local rates kept separate.Open calculator →VAT / GST calculatorAdd or remove VAT/GST with presets for 18 countries.Open calculator →Hourly rate calculatorFreelance rate from take-home target, costs and billable hours.Open calculator →Commission calculatorFree, instant and private — runs entirely in your browser.Open calculator →Invoice generator calculatorFree invoice maker with per-line VAT/GST, tax breakdown by rate and a compliance check.Open calculator →

Growth Metrics

ROI calculatorTotal & annualized ROI, real return after inflation, A-vs-B verdict.Open calculator →CAC & LTV calculatorCAC, LTV, LTV:CAC ratio and payback period with a verdict.Open calculator →NPV & IRR calculatorNet present value, IRR, payback and profitability indexOpen calculator →
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About these calculators

Two of the most costly confusions in small business are margin vs markup and revenue vs profit. This category is being built to make those distinctions impossible to miss: the margin and markup calculators will show both numbers side by side (a 50% markup is only a 33% margin), ROI will annualize returns so different investments compare fairly, and break-even will translate fixed and variable costs into the units and revenue you need before profit starts.

Each tool is aimed at real pricing and planning decisions — setting a price, evaluating a purchase, judging whether a product line can work. Export the numbers, share the link with a partner, and nothing you enter ever leaves your browser.

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Every category, same promise: runs in your browser, shows its math, never sees your numbers.

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