Everyday Calculators & Unit Converters
15 calculators
Age calculator
Find completed years and days between dates.
Date difference
Count calendar days between two dates.
Add days to date
Find the date before or after a number of days.
Work hours
Calculate a shift, including overnight work.
Time conversion
Convert hours, minutes and seconds.
GPA calculator
Calculate a credit-weighted GPA on a 4.0 scale.
Final grade calculator
Find the final exam score you need.
Concrete calculator
Estimate concrete volume with a waste allowance.
Unit converter
Convert length, mass, area, volume, speed and data size.
Temperature converter
Celsius, Fahrenheit and Kelvin.
Fuel consumption
Estimate fuel consumption and cost.
Password generator
Generate a random password on your device.
IPv4 subnet calculator
Find network, broadcast and subnet mask.
Electricity cost calculator
Estimate energy use and cost from power, usage time and electricity price.
Business days calculator
Count business days or find a date after business days, with holidays and working-day overrides.