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Mortgage, loans, investments, retirement, taxes, profit margin, and budgeting tools.
30+ tools →BMI, calories, TDEE, macros, body fat, VO2 max, heart rate zones, and pregnancy tools.
17 tools →Percentage, fractions, quadratic solver, Pythagorean theorem, area, statistics, and more.
17 tools →JSON formatter, hash generator, QR code, color converter, password generator, IP subnet.
17 tools →Concrete, paint, flooring, roofing, gravel, mulch, wallpaper, and fence calculators.
16 tools →Recipe scaler, baking conversion, and measurement tools for the kitchen.
10 tools →Monthly payments, total interest, and amortization schedules for your home loan.
Calculate →See how investments grow over time through compound interest and regular contributions.
Calculate →Calculate Body Mass Index using the WHO classification. Metric and imperial.
Calculate →Daily calorie needs using Mifflin-St Jeor equation with 5 activity levels.
Calculate →Find X% of Y, what percent X is of Y, and calculate percentage change.
Calculate →Find out how much you need to save for a comfortable retirement.
Calculate →Calculate tips and split bills between friends with per-person totals.
Calculate →Length, weight, volume, temperature — metric and imperial conversions.
Convert →A step-by-step guide to reaching your home-buying goal faster.
Read more →Two popular strategies for paying off debt β which one saves you more?
Read more →The math behind compound interest and how time beats a bigger paycheck.
Read more →All calculations happen in your browser in real time. No page reloads, no waiting, no server calls.
Your numbers never leave your device. Zero data collection, zero tracking of your inputs.
No sign-ups, no paywalls, no premium tiers. Every calculator is free to use, forever.
CalcFlo is built for students, professionals, homebuyers, investors, developers, and anyone who needs quick, reliable calculations.