Everyday Calculators
Dates, time, grades, tech and more.
Age Calculator
Exact age in years, months and days.
Date Calculator
Add days to a date or count days between dates.
Time Calculator
Add or subtract hours, minutes and seconds.
Hours Calculator
Hours worked between two clock times.
GPA Calculator
Weighted grade point average by credits.
Grade Calculator
Weighted course grade from assignments.
Concrete Calculator
Concrete volume and bags for a slab.
Subnet Calculator
IPv4 network, broadcast and host range.
Password Generator
Strong random passwords, generated on your device.
Conversion Calculator
Length, weight, temperature and volume units.