Online Time Calculator AI

Saroj Jangir

Time Calculator

Days:

Hours:

Minutes:

Seconds:

Operation: Add Subtract

Days to Add/Subtract:

Hours to Add/Subtract:

Minutes to Add/Subtract:

Seconds to Add/Subtract:

Time Calculator Add, Subtract & Find Time Differences

1. Add or Subtract Two Time Values

Users can add or subtract two time values using fields like Days, Hours, Minutes, and Seconds. If a field is left blank, the result is calculated accordingly.

2. Add or Subtract Time from a Date

Enter a specific start date and time. Choose to add or subtract a time value (days, hours, minutes, or seconds). The result shows the new date and time.

3. Perform Time Calculations Using Math Expressions

Users can add/subtract multiple time values in a single expression using:

d = Days
h = Hours
m = Minutes
s = Seconds

Example: 3d 4h 5m 6s + 8h 25m - 3600s

Time Duration Calculators

Find the Difference Between Two Time Values

Enter a Start Time and End Time to calculate the difference. The result is displayed in hours, minutes, and seconds.

Find the Time Gap Between Two Dates

Enter two dates and times to find the exact duration between them. The result is shown in days, hours, minutes, and seconds.

Understanding Time Calculations

Basic Time Units

Unit	Duration
Millennium	1,000 years
Century	100 years
Decade	10 years
Year	365.242 days (average)
Leap Year	366 days
Month	28-31 days
Week	7 days
Day	24 hours
Hour	60 minutes
Minute	60 seconds
Second	Base unit