Days Between Dates
Start Date
End Date
A days between dates calculator counts the exact number of calendar days separating two dates. It can also express the difference in weeks and months for longer time spans.
- 1Convert both dates to milliseconds since epoch
- 2Subtract start from end date in milliseconds
- 3Divide by 86,400,000 (ms per day)
- 4Result is the absolute number of calendar days
Jan 1 to Dec 31 same year=364 days (365 in a leap year)
Mar 1 to Jun 30=121 days
Today to your birthday=Exact days remaining
| Month | Days (normal) | Days (leap year) |
|---|---|---|
| January | 31 | 31 |
| February | 28 | 29 |
| March | 31 | 31 |
| April | 30 | 30 |
| June | 30 | 30 |
| December | 31 | 31 |
References
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