Time & Date Calculator

Enter the value that you want to calculate time and date..

 From: at: To: at:
 Time difference:

Time between Dates:

Time and date calculator find the time difference between two dates. Our date duration calculator counts the time duration between two days in minutes, hours, days, & years. You need to determine the start date and end dates to calculate number of days between two dates. Our date difference calculator evaluates the exact duration between dates in minutes, hours, days, & years.

Here we are using US date formatting month/date/year & Time format will be hours: minutes. Our calculator used to find the time and date difference between two non-businesses or businesses date to date.

History of Time:

Few 100 years back clock is not discovered so people use to measure time by Sunlight, Sand Clock & Sundials where used. The sand clock is a device which consists of two glass chambers. One chamber is filled up with sand, this sand will move from one chamber to other chambers in dedicated time. Sundial is a device by these people knows the time by the position of the sun. Sundial has a flat plate with the gnomon (It produce a shadow) attached to it. As the sun moves the gnomon is shows a shadow in a different direction on the sundial plate by these people will know the time.

The user guide of time and date calculator:
Open Time and Date Calculator.
Select the start and end date from the calendar.
Enter the starting and ending time.
Our time between dates calculator provides you the exact days between dates.

ppm to percent conversion table

 Unit Definition millennium 1,000 years century 100 years decade 10 years year (average) 365.242 days or 12 months common year 365 days or 12 months leap year 366 days or 12 months quarter 3 months month 28-31 daysJan., Mar., May, Jul., Aug. Oct., Dec.—31 daysApr., Jun., Sep., Nov.—30 days.Feb.—28 days for common year and 29 days for leap year week 7 days day 24 hours or 1,440 minutes or 86,400 seconds hour 60 minutes or 3,600 seconds minute 60 seconds second base unit millisecond 10-3 second microsecond 10-6 second nanosecond 10-9 second picosecond 10-12 second

Units, symbols and conversion values used in this time calculator

 To Convert from Unit Unit Symbol and Convert to ( s ) Multiply by ( s / Unit ) nanosecond ns second 0.000000001 millisecond ms second 0.001 second s second 1 second (sidereal) s second 0.99726956 minute min second 60 minute (sidereal) min second 59.83617361 hour h second 3600 hour (sidereal) h second 3590.170417 day d second 86400 day (sidereal) d second 86164.09 week wk second 604800 month mo second 2628000 shake shake second 0.00000001 year yr second 31536000 year (sidereal) yr second 31449892.85 decade dec second 315360000 century c second 3153600000 millennium millennium second 31536000000