Time Calculator
Use this time calculator to add or subtract hours, minutes, and seconds. You can also add a duration to a specific date and time to find the exact end time, or calculate time using a simple expression.
Minutes & Seconds Converter
Examples
What time will it be in 30 minutes?
5:45:00Time addition with expression
2h 10mTime Unit Cheat Sheet
1 minute = 60 seconds 1 hour = 60 minutes 1 day = 24 hours 1 week = 7 daysFrequently Asked Questions
What is a time calculator?
A time calculator adds or subtracts time in days, hours, minutes, and seconds. It can also compute a new clock time after adding a duration.
How do I add time to a clock time?
Use the "Add or subtract from a date & time" tab, enter the start time, then enter the duration to add.
How do I subtract time?
Choose subtract and enter the duration you want to remove. The result updates to the new time value or new end time.
What time will it be in 30 minutes?
Enter the start time and add 30 minutes. You can also use the +30 min shortcut button.
How do I convert minutes to hours and minutes?
Use the conversion panel below the calculator to enter total minutes and view the same time as hours, minutes, and seconds.
Can I calculate time with an expression like 1h 30m + 45m?
Yes. Use the expression tab and type time values with d, h, m, s plus + or −.