Time & Date Calculators
Day Counter
Enter two dates and this day counter returns the calendar days between them, in either direction: a later end date reads as a countdown, an earlier one as days elapsed. The count is exclusive by default — the days between the two dates — and the box adds the end day itself.
Calculator
How It Works
The two dates are placed on their calendar days and the smaller day number is subtracted from the larger, so the span is the same whichever order the dates are entered. The count is exclusive by default: it counts the days between the two dates, so 1 March to 2 March is 1 day. Ticking the end-day box counts the end date itself as well, which adds one day and makes two dates on the same day read 1 rather than 0. Days are calendar days, not 24-hour periods, so a clock change or a leap year never shifts the answer.
About This Calculator
What It Does
Count the exact number of calendar days between any two dates, in the past or the future and in either order, with the same span in whole weeks and left-over days and the direction named.
Worked Example
From 1 January 2026 to 31 December 2026: 364 days, which is 52 weeks and 0 days. Ticking the end-day box counts 31 December as well, giving 365 days.
Real-World Usage
Measure the days between two events, count down to a deadline or a trip, work out how many days have passed since a date, or compare two spans of time in one place.
Local Context
The count is calendar days, so it is the same in every country; only the way a date is written differs — the United States uses MM/DD/YYYY, most European countries DD/MM/YYYY, and Germany DD.MM.YYYY.
Last reviewed: October 2026.
Frequently Asked Questions
Is the end date counted?
Not by default. The count is exclusive: it counts the days between the two dates, so 1 March to 2 March reads 1 day and 1 March to 1 April reads 31 days. Tick "Count the end day as well" to include the end date itself, which adds one day — 32 for the same March to April span.
Does it matter which date I enter first?
No. The span is the same either way, because the counter subtracts the smaller calendar-day number from the larger. The result names the direction instead: a second date after the first reads "in the future", and one before it reads "in the past".
Are these 24-hour periods or calendar days?
Calendar days. The two dates are placed on the day of the calendar they fall on and those day numbers are subtracted, so a daylight-saving change between them cannot make the count an hour short and leap years are counted correctly.