Time Calculator
Add or subtract time values with precision and ease. Perfect for meeting planning, workout timing, and project scheduling.
Missing Required Information
Please complete all required fields to calculate time.
First Time
Second Time
Results
Enter your time values and click Calculate to see results
Add or Subtract Time from a Date
Use this calculator to add or subtract time (days, hours, minutes, seconds) from a starting time and date. The result will be the new time and date based on the subtracted or added period of time.
Operation
Time to Add/Subtract
Results
Enter your values and click Calculate to see results
Time Calculator in Expression
Use this calculator to add or subtract two or more time values in the form of an expression. An acceptable input has d, h, m, and s following each value, where d means days, h means hours, m means minutes, and s means seconds. The only acceptable operators are + and -.
How to write expressions:
- • Use d for days, h for hours, m for minutes, s for seconds
- • Use + to add time values
- • Use - to subtract time values
- • Example: "1d 2h 3m 4s + 4h 5s - 2030s"
Results
Enter your expression and click Calculate to see results
Embed Time Calculators
Add our time calculators to your website or blog. Help your visitors add or subtract time values, calculate time from dates, and work with time expressions. Perfect for project management, scheduling, and time tracking websites.
Time Calculator
Add or subtract time values with precision and ease.
Add or Subtract Time from a Date
Add or subtract time from a starting date and time.
Time Calculator in Expression
Calculate time using expressions with d, h, m, s format.
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Time Conversion Reference Chart
| Unit | Seconds | Minutes | Hours | Days |
|---|---|---|---|---|
| 1 Second | 1 | 0.0167 | 0.000278 | 0.0000116 |
| 1 Minute | 60 | 1 | 0.0167 | 0.000694 |
| 1 Hour | 3,600 | 60 | 1 | 0.0417 |
| 1 Day | 86,400 | 1,440 | 24 | 1 |