Finance Calculators
Finance Calculators cover the numbers behind the biggest personal financial decisions: mortgages, loans, retirement savings, taxes, and investment returns. Homebuyers use them to compare mortgage offers and see full amortization schedules; investors use them to model compound growth, bond pricing, and inflation-adjusted returns; freelancers and founders use the startup tools to plan runway, break-even revenue, and valuation. Every calculator runs the same math as our REST API, with no sign-up and no data stored — they're built for exploring the numbers behind a decision, not as a substitute for professional financial advice.
Loans & Property
Use these when you’re evaluating a mortgage, comparing loan offers, or sizing up a property purchase.
Investing & Markets
Model returns, pricing, and portfolio decisions across stocks, bonds, and retirement accounts.
Salary & Tax
See what actually lands in your bank account after tax, or what an employee really costs to hire.
Retirement & Tax Planning
Plan withdrawals, savings targets, and everyday tax and invoicing calculations.
Startup & Business Planning
Runway, revenue, and valuation tools for founders and freelancers running the numbers on a business.
Related calculators
Financial ratio, valuation, and capital markets calculators for analysts and business owners assessing company health, solvency, and investment returns.
Salary, income percentile, and net worth calculators showing how your earnings and wealth compare nationally and globally, by degree, role, and country.
Country comparison calculators covering cost of living, air quality, safety, and climate fit, built from World Bank, WHO, and government data sources.