Business calculators
Margins, break-even, CAC payback, and the true cost of a hire. Every tool shows its formula, updates live, and works on any device.
Saved & recent
- Break-Even CalculatorUnits and revenue needed to break even from fixed costs, price, and variable cost — plus target-profit units and margin of safety, formula shown.→
- Business Ratios CalculatorEvery core accounting and finance ratio in one tool: profitability margins, ROA / ROE / ROIC, liquidity, leverage, efficiency turnovers with DSO / DPO / DIO, marketing metrics and valuation multiples — pick a ratio from the dropdown.→
- Employee Cost CalculatorThe fully-loaded cost of a hire — salary plus FICA, FUTA, SUTA, 401(k) match, benefits, and overhead — with the true hourly rate and markup shown.→
- Gross Margin CalculatorGross profit, gross margin percentage, and markup from revenue and cost of goods sold — with the margin-versus-markup difference spelled out.→
- Marketing ROI CalculatorMarketing ROI from attributed revenue and campaign cost, with net profit, revenue per dollar, and a separate ROAS check for paid channels.→
- Work Schedule CalculatorOne page for work-time planning: build a rotating 12-hour shift pattern from D/N/O letters, price night and weekend differentials, run weekly overtime pay, project PTO accrual, count the vacation days a trip costs, count work days until a deadline, estimate the days until retirement, convert weekly hours to FTE and annual hours, prorate salary for a partial period, deduct unpaid breaks, plan a meeting across three time zones, track work anniversaries, count weekend days, and net out holidays from the 260-day work year.→
How this manual is organized
Each entry above opens a one-page tool: inputs on the left, the live result on its color board, and beneath the card the formula with worked examples and the method's limits. Save the tools you use often — they'll wait on this shelf next visit.