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About CalcBit
CalcBit is India's most comprehensive free calculator platform. 45+ tools covering finance, tax, salary, business, health, and unit conversions — all 100% private, always free.
45+
Free calculators
100% Free
No sign-up
Official
Formula sources
19+
Expert guides
Our story
Financial calculators in India are either inaccurate, bloated with ads, or require personal information just to show a basic result. We built CalcBit to be different.
Every calculator uses verified mathematical formulas, processes everything in your browser (zero data leaves your device), and is completely free — no signups, no limits, no hidden charges.
CalcBit offers 45+ calculators covering everything from home loan EMIs to income tax, GST, SIP planning, and unit conversions — free, private, and without sign-up.
Every calculation runs in your browser. We never see, store, or share your financial data.
Our formulas match the exact standards established by Indian banks, tax authorities, and financial institutions.
No clutter, no jargon, no ads. Clean interface designed for instant understanding.
No premium tiers, no paywalls, no signups. Every calculator is completely free, forever.
Standards
All calculators reviewed quarterly, with tax slabs and statutory rates updated after each government announcement.
Every calculator page includes the mathematical formula used, step-by-step methods, and worked examples.
All guides and articles verified against official sources including Income Tax Department, RBI, and SEBI.