CalcPhi is a free financial calculator platform built by Black Belt Code Labs. Our mission is simple: give every Indian investor access to clear, accurate, and beautifully designed financial tools — completely free, no sign-up required.
Most financial calculators online are either ugly, inaccurate, cluttered with ads, or buried inside apps that require registration. We wanted to build something different — fast, honest tools that show you real numbers and help you make better financial decisions.
The name CalcPhi comes from the golden ratio (φ = 1.618...), which represents the kind of compounding growth that smart, patient investing creates. Just as phi appears naturally in growth patterns across nature, compound interest creates naturally accelerating wealth over time.
Estimate your mutual fund returns with step-up SIP and year-by-year breakdown.
Find your Financial Independence number and timeline to retire early.
Use the Rule of 72 to find out when your investment doubles, triples, or 10×.
See the real purchasing power of your money after inflation over time.
Find out if you're on track for retirement and exactly how to close any gap.
Black Belt Code Labs is a technology company focused on building useful, high-quality web tools. CalcPhi is our flagship financial calculator platform. We believe that great financial tools should be accessible to everyone, not locked behind paywalls or buried in bloated apps.
Have a suggestion for a new calculator? Found a bug? Want to partner with us? We'd love to hear from you.
Email: hello@calcphi.com