About FinMath
FinMath is a free portal of precise, fast, and mobile-friendly calculators for finance professionals, investors, and developers. No signup, no paywall, no dark patterns — just tools that do the math correctly.
Who runs this site?
FinMath is an independent project by a risk analytics professional with over three decades of experience in portfolio risk, Value-at-Risk modeling, derivatives pricing, and quantitative finance. He is also the creator of VaRisk Kancil, a portfolio risk analytics platform for institutional and retail investors.
FinMath grew out of a simple observation: most online financial calculators either oversimplify the math (hiding important assumptions) or bury the results behind intrusive ads and forced email signups. FinMath aims to fix both problems.
Our principles
- Precision first. Calculations are done with standard industry formulas and tested against reference implementations (HP 12C, Bloomberg terminal conventions where applicable).
- Privacy by default. All calculations run in your browser. We do not collect, transmit, or store the numbers you enter.
- No signup wall. Every tool works instantly. You should never be asked for an email to use a calculator.
- Mobile-friendly. Designed for the real world — quick checks on your phone during a meeting with your bank or client.
- Educational. Each calculator includes a plain-English explanation of the formula and assumptions used.
How we fund the site
FinMath is funded by display advertising (Google AdSense). Ads are clearly labeled and never mixed with calculator results. We do not accept sponsored calculations or paid placements. If an advertiser's product is mentioned in educational content, it is clearly disclosed.
Contact
Questions, feedback, or bug reports? Email hello@finmath.co. We read every message.
Disclaimer
FinMath is for informational purposes only. Calculations on this site are estimates based on the inputs you provide and standard financial formulas. They are not financial advice and should not be the sole basis for financial decisions. Always consult with a qualified financial advisor, accountant, or your financial institution for decisions involving your money.