Days Until / Since Calculator

Result :

Time Calculators

minutes to hours hours to minutes hours to days days to hours seconds to days Time Card Calculator days to seconds minutes to days days to minutes days to months months to days days to years years to days minutes to seconds seconds to minutes milliseconds to seconds seconds to milliseconds

Days Between Dates:

Date calculator provides you the number of days between two dates. Our date duration calculator helps you find the exact difference between two dates in days, weeks, and months.

What is Date calculator?

Date duration calculator measures the exact time between two dates. To determine the number of days between two dates you need to enter the starting & ending date in month/day/year format. Click on calculate to get exact time difference between two dates in days, weeks, and months.

How to use date duration calculator?

To use the date duration calculator you need to follow below steps.

Step1:

Open Date Calculator.

Step2:

Enter the Start and End dates in month/date/year format.

Step3:

Click on calculate to get time difference between dates in days, weeks, and months.

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 days Jan., Mar., May, Jul., Aug. Oct., Dec.—31 days Apr., 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)	h	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