Time Calculator

Global Time Calculator

Calculate time differences, add or subtract time values, and convert across time zones

Basic Time Calculator

Add or subtract days, hours, minutes, and seconds from a given time.

Start Time:

Time to Add/Subtract:

Result:

0 days, 0 hours, 0 minutes, 0 seconds

Date & Time Calculator

Add or subtract time from a specific date and time.

Start Date & Time:

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

PM AM

Time to Add/Subtract:

Result Date & Time:

May 13, 2025, 7:26:36 PM

Time Zone Converter

Convert between different time zones around the world.

From Time Zone:

To Time Zone:

Date & Time to Convert:

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

PM AM

Converted Time:

Select time zones and click convert

Time Expression Calculator

Calculate time expressions with days (d), hours (h), minutes (m), and seconds (s).

Expression Result:

Enter an expression to calculate

Examples:

1d 2h 3m 4s + 4h 5s - 2030s

28h + 30m - 3600s

1.5d + 2.25h - 45m

© 2025 Global Time Calculator | All time calculations are based on your device's local time zone

For accurate time zone conversions, we use the IANA time zone database