Calcivus is a free online calculator platform giving students, professionals, and curious minds instant access to 100+ calculation tools — no signup, no ads on tools, no limits.
Calcivus is a free calculator platform covering math, finance, health, education, unit conversions, engineering, statistics, date & time, auto, and developer tools. Every calculator is built to be fast, accurate, and mobile-friendly.
We believe calculation tools should be accessible to everyone — without intrusive ads, forced account creation, or slow loading times. Every tool on Calcivus is free and always will be.
Math & Algebra — percentage, scientific, fraction, quadratic equation solver, GPA, grade and more.
Finance & Money — compound interest, loan EMI, mortgage, ROI, currency converter, savings, retirement and more.
Health & Fitness — BMI, BMR, TDEE, calorie burn, body fat, water intake, protein and more.
Education — GPA, grade, final grade, attendance calculators for students.
Unit Converters — temperature, weight, length, volume, speed and more.
Engineering — Ohm's Law, force, torque, kinetic energy and more.
Statistics — standard deviation, Z-score, mean, median, probability and more.
Developer Tools — binary converter, color codes, password generator and more.
Have a suggestion for a new calculator, found a bug, or want to collaborate? We'd love to hear from you. Visit our contact page.