Time Calculators

Add, subtract, and convert time durations and time zones.

Add, subtract, and convert time durations — hours worked, time zone differences, and payroll-ready time card totals.

Add or subtract hours, minutes, and seconds.

Calculate hours worked between two times.

Convert time between time zones around the world.

Calculate weekly work hours and overtime pay.

Frequently Asked Questions

Can I calculate overtime pay with these tools?

Yes, the Time Card Calculator totals weekly hours and calculates overtime pay based on your hourly rate and standard 40-hour threshold.

Add, subtract, and find the difference between dates.

Calculate exact age, birthdays, and age-related dates.