CalPro Calculator

All-in-one calculator with EMI, SIP, GST, scientific mode & 25+ smart tools. Compare loans side-by-side, convert units & currencies, and crunch numbers instantly.

One app. Every calculation you need.

CalPro replaces a dozen single-purpose apps with one fast, beautiful, ad-light toolkit — from an everyday calculator to advanced finance, health, and conversion tools. No sign-up, no clutter, just answers.

CALCULATORS • Basic calculator with memory keys (M+, M−, MR, MC) and a live running result • Full scientific calculator — trig, logs, powers, roots, factorial, π & e, DEG/RAD

FINANCE & MONEY • Loan / EMI — full amortization schedule, solve for EMI, amount, tenure or rate, plus prepayment "what-if" scenarios • SIP, Compound & Simple Interest, FD, PPF — grow-your-money projections • GST calculator with CGST / SGST / IGST split • Salary / CTC — take-home estimate for New & Old tax regimes • Trading P&L, Profit & Loss, Discount, Tip — instant results

COMPARE SIDE-BY-SIDE • Stack multiple loans, SIPs, FDs, job offers or trades next to each other • See the best option highlighted with clear visual bars

CONVERTERS • Unit converter — length, weight, temperature, area, volume, speed, data, pressure, energy, power, time & angle • Currency-aware formatting • Number base converter (HEX / DEC / OCT / BIN) • World clock + time-zone converter for cities worldwide

HEALTH & EVERYDAY • BMI & BMR, body-fat %, waist-hip ratio, ideal weight • Fuel cost, electricity bill, unit-price comparison • Percentage, age & date, date difference

STUDENTS & REFERENCE • Grade average & GPA calculators • Formula library — geometry, algebra, physics, trigonometry, finance & constants

WHY CALPRO • Clean, modern design with Dark & Light themes • Fast and lightweight — works the moment you open it • Pick your base currency • Private by design — no account required

Download CalPro and make every number simple.