Time Calculator

Time Calculator

Versatile time calculator for adding and subtracting time durations, calculating time differences between dates. Perfect for project planning and time tracking.

Calculators

Time Calculator

Results

Addition Result

3h 46m 15s

Total: 13,575 seconds

Difference

1h 15m 15s

Total: 4,515 seconds

Time Difference

782d 8h 30m
18,776
Total Hours
1,126,590
Total Minutes

Time Conversions

1 hour =60 minutes
1 minute =60 seconds
1 day =24 hours
1 week =168 hours

About & Features

Learn more about this tool and its capabilities

About Time Calculator

Our comprehensive time calculator helps you add, subtract, and calculate time differences with ease. Perfect for project planning, time tracking, calculating work hours, or figuring out time zones and durations.

Whether you need to add hours and minutes together, subtract time durations, or calculate the exact time difference between two dates, this calculator handles all time arithmetic operations accurately.

What You Can Calculate:

  • Add multiple time durations together
  • Subtract one time duration from another
  • Calculate time difference between dates and times
  • View results in hours, minutes, and seconds
  • Convert time to different units
  • Copy and use results in other applications

How to Use

Step-by-step guide to get the most out of this tool

How to Use the Time Calculator

Adding Time Durations

  1. Select the "Add/Subtract" tab
  2. Enter hours, minutes, and seconds for Time 1
  3. Enter hours, minutes, and seconds for Time 2
  4. See the addition result immediately
  5. Example: 2:30:45 + 1:15:30 = 3:46:15

Subtracting Time Durations

  1. Enter both time durations
  2. The calculator automatically shows the difference
  3. Result shows absolute difference (always positive)
  4. Example: 3:30:00 - 1:15:30 = 2:14:30

Calculating Time Between Dates

  1. Switch to the "Time Difference" tab
  2. Select start date and time
  3. Select end date and time
  4. View difference in days, hours, and minutes
  5. See total in hours, minutes, and seconds

Pro Tips:

  • Use "Set End to Now" for quick current time calculation
  • All calculations update in real-time
  • Copy results with one click
  • Perfect for calculating work hours, project durations
  • Handles time spanning multiple days automatically

Frequently Asked Questions

Common questions and answers about this tool

Time Calculator FAQ

How do I add hours and minutes?

Simply enter the hours, minutes, and seconds for both time periods. The calculator automatically adds them together and handles overflow (e.g., 70 minutes becomes 1 hour 10 minutes).

Can I calculate work hours between two times?

Yes! Use the "Time Difference" tab. Enter your start time and date, then your end time and date. The calculator shows total hours worked, perfect for timesheets and payroll.

How accurate are the calculations?

Extremely accurate. The calculator handles all time conversions precisely, accounting for different month lengths, leap years, and time zone complexities when calculating between dates.

Can I calculate time across midnight?

Yes! When using the date/time difference calculator, you can calculate across midnight, across days, weeks, or even years. The calculator handles all scenarios automatically.

What's the difference between the two tabs?

"Add/Subtract" is for working with time durations (like adding 2 hours 30 minutes to 1 hour 15 minutes). "Time Difference" is for finding the time between specific dates and times (like from Monday 9 AM to Friday 5 PM).

How do I convert hours to minutes or seconds?

The calculator shows results in multiple formats. In the time difference calculation, you'll see the result in days/hours/minutes as well as total hours, total minutes, and total seconds.

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