Find how many days, weeks, months and years fall between two dates. Useful for project timelines, age gaps, billing periods, leave balances and deadlines. The calculator is calendar-aware so month lengths and leap years are counted correctly — not just a raw day multiply.
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The primary day count is exclusive of the end date (standard difference). For inclusive counts (both endpoints counted), add one day to the result.
Full calendar months are counted first, then leftover days. From 31 January to 28 February is 0 months and 28 days in some conventions, or 1 month in others — this tool reports full months plus remaining days so the breakdown is explicit.
No. This is a calendar difference. Weekends and holidays are not subtracted; compute business days separately if needed.
| Platform | Supported | Offline | Local | Server | Network |
|---|---|---|---|---|---|
| WEB | Yes | Yes | Yes | No | Not required |
| PWA | Yes | Yes | Yes | No | Not required |
| ANDROID | Yes | Yes | Yes | No | Not required |
| IOS | Yes | Yes | Yes | No | Not required |
Calculate exact age in years, months, and days.
Format a date in ISO, long, short and UTC styles.
Count down to any date and time, or from a number of seconds — free online timer.
Convert between Unix timestamps and human-readable dates.
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