# Time Calculator

The Time Calculator is a tool for calculating the Time differences from Time to Time online. There are also calculable time differences between two Times. The output Time difference is based on start time and end time.

The calculation of the Time difference does not depend on the time zone of a person, as the output is the Time difference.

### Add or Subtract Time from a Date

This calculator may use two times for “adding” or “subtracting.” Fields that are taken as 0 by default may be left blank.

To add or subtract time from the time and date of beginning, use it (days, hours, minutes, seconds). The result is a new time and date based on the time that is subtracted or added.

### Time Calculator for Past and Future Time

With this Time Calculator, you can look into the past. You might like to know how many days have passed since your birth, marriage or historic Time.

The days between Times calculator on this page works by getting the time stamp of the start Time and deducting it from the end Time.

### How To use the Time Calculator:

- Enter Start Time by selecting hours minutes and seconds.
- Enter End Time to find the Difference.
- Click “Calculate”, The Results section will display the calculated Time.

### Different units of time

- 1 pico = 10-12 second
- 1 nano = 10-9 second
- 1 microsecond = 10-6 second
- 1 millisecond = 10-3 second
- 1 second = base unit
- 1 minute = 60 seconds
- 1 minute = 60 seconds
- 1 hour = 60 minutes or 3,600 seconds
- 1 day = 24 hours or 1,440 minutes or 86,400 seconds
- 1 week = 7 days
- 1 month = 28-31 days
- 1 quarter = 3 months
- 1 leap year = 366 days or 12 months
- 1 year = 365 days or 12 months
- 1 decade = 10 years
- 1 century = 100 years
- 1 millennium = 1,000 years