Every tool on this page runs instantly in your browser — no signup, no spreadsheet templates, no data sent anywhere. Move the sliders and the numbers update live. Each calculator links to a full guide with the formula, a worked example and the judgement calls the formula can’t make for you.
DCF Valuation
Value a company from its projected free cash flows.
Open →WACC Calculator
Blend cost of equity and debt into one discount rate.
Open →LTV / CAC Ratio
The unit-economics test every SaaS investor runs.
Open →Profit Margin
Gross, operating and net margin in one place.
Open →CAGR Calculator
Annualised growth between any two values.
Open →Burn & Runway
How many months of cash a startup has left.
Open →Break-Even Point
Units and revenue needed to cover fixed costs.
Open →ROI & Payback
Return and payback period on any investment.
Open →Markup Calculator
Turn unit cost and markup into a selling price.
Open →Inventory Turnover
How fast stock sells, in turns and days.
Open →Compound Interest
Growth of savings with monthly contributions.
Open →Loan Payment
Monthly payment, total cost and interest paid.
Open →Which calculator do you need?
Valuing a company? Start with the DCF calculator, and use the WACC calculator to find the right discount rate to feed it. Running a SaaS or startup? The LTV/CAC ratio and burn & runway tools are the two numbers investors ask for first. Retail or e-commerce? Margin, markup and inventory turnover cover pricing and stock. Personal or general investing? Compound interest, CAGR, ROI and the loan payment tool.
Are these calculators free?
Yes — every tool is free, runs entirely in your browser, and requires no account. Your inputs never leave your device.
How accurate are the results?
The formulas are the standard ones used in corporate finance. The results are only as good as your inputs, though — each tool’s guide explains the assumptions that matter most.
Can I use these for real financial decisions?
Use them for analysis and understanding. They are educational tools, not personalised financial advice — significant decisions deserve a qualified professional who knows your situation.
Do the calculators work on mobile?
Yes — every slider and result is touch-friendly and the layout adapts to any screen size.