Calculator directory
Every calculation, in one toolkit
Choose a category below. Each calculator shows its inputs, units, and result format so you can find the right tool and check the number quickly.
Scientific and programmer
Precision and number bases
Standard calculator
Everyday arithmetic with clear input and result fields, for quick totals and simple operations.
Scientific precision
Trigonometry and logarithms for technical work, with angle modes and precise decimal output.
Programmer mode
64-bit Hex, Dec, Oct, and Bin conversion with bitwise logic operations for code and hardware work.
Conversion and currency
Units and live exchange rates
Unit conversion
Convert distance, weight, temperature, speed, area, and volume. Units appear beside each value so you can check the comparison at a glance.
Foreign exchange
A real-time currency converter covering 25+ global currencies, for quick comparisons across markets.
Time, health, and dates
Age, health, and date math
Age and time
An exact age ticker, next-birthday countdown, zodiac, and life statistics.
BMI and health
Body mass index, a WHO gauge, ideal weight, and daily calories with BMR and TDEE estimates.
Date math
Duration between dates and a working-days calculator that counts business days.