6 free tools · run in your browser
Date & Time Tools
Free calculators for calendar dates and durations that run in your browser and show the rule behind every result.
- No sign-up
- Files stay on your device
- Free to use
728 x 90 Header Ad
Date & Time Tools
All date & time tools
6 tools
Days Between Dates Calculator
Count the days between two dates, plus the same gap in years, months, weeks, weekdays and hours. Choose whether the end date is included.
Open toolDate Calculator
Add or subtract days, weeks, months and years from a date. Pick a month-end rule and see the result date, weekday and ISO week.
Open toolAge Calculator
Calculate exact age in years, months and days from a birth date, plus the next birthday and the weekday you were born.
Open toolDay of the Week Calculator
Find what day of the week any date fell or falls on, including historical dates in the old Julian calendar.
Open toolWeek Number Calculator
Find the ISO 8601 or US week number for any date, see which dates fall in a given week, or list every week of a year.
Open toolHours Calculator
Find the hours and minutes between two times, with an optional break deducted, as hours and minutes, hh:mm, decimal hours or total minutes.
Open tool728 x 90 In-Content Ad
Runs on your device
The work happens in your browser. Nothing you type or upload is sent to us.
No account needed
Open a tool and use it. No sign-up, no email, no waiting.
Works everywhere
Phone, tablet or desktop, in any modern browser.
About Date & Time Tools
Date & Time Tools on Toolipi are built for quick, repeatable browser workflows. Each utility has a clean URL, focused metadata, structured data, and a mobile-friendly interface so users and search engines can understand exactly what the page does.
Most tools process input directly in the browser for speed and privacy. Bookmark this category to keep the full date & time tools collection close at hand.
Need something else?
More free tools across 9 categories, all running in your browser.