⏰ Time Calculator
Add, subtract, and calculate time values with precision
Time Calculator
This calculator can be used to 'add' or 'subtract' two time values. Input fields can be left blank, which will be taken as 0 by default.
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.
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 -.
Example: '1d 2h 3m 4s + 4h 5s - 2030s + 28h' is a valid expression
Free online time calculator. All calculations happen locally in your browser for privacy.