Free Date & Time Tools for Planning, Deadlines, and Time Zones
UMARIX Date & Time Tools answers the date questions that come up every week: How old am I exactly? How many days until a deadline? What time is a meeting in London when it is 3 PM in New York? How many working days are left in a project? Each tool runs entirely in your browser, with no signup and no data sent to a server, so you can check a date in seconds and get on with your day.
How it works
Pick the tool that matches your question. The age calculator gives your exact age in years, months, and days and counts down to your next birthday. The date difference calculator counts the exact days between two dates, which is far more reliable than guessing across months of different lengths. The countdown timer updates live every second until your target date and time, which is ideal for exams, launches, weddings, and travel departures.
For work across borders, the time zone converter uses your browser's built-in time zone data, so daylight saving changes are handled for the exact date you choose. For example, a 3 PM meeting in New York is not always the same time in London, because the two cities change their clocks on different weekends. Checking the exact date avoids the classic missed-meeting mistake. The working days calculator excludes Saturdays and Sundays and lets you add public holidays, one per line, so a project estimate reflects real working time rather than calendar time.
Finally, the monthly calendar lets you view any month and year, check the weekday for any date, and see leap-year February correctly. Together, these six tools cover personal planning, school and work deadlines, travel, and international scheduling without installing an app or creating an account.
All tools
Age Calculator
Find your exact age in years, months, and days from your date of birth, plus your next birthday and how many days remain until it. It is useful for school enrollment, forms, and bi
Date Difference Calculator
Calculate the time between two dates in days, weeks, months, and years. Use it for project timelines, countdowns to a deadline, pregnancy or employment durations, and travel planni
Countdown Timer
Create a live countdown to any date and time: a wedding, an exam, a product launch, New Year, or a travel departure. The timer updates every second in your browser until the target
Time Zone Converter
Convert a date and time between major world time zones, including New York, London, Berlin, Dubai, Karachi, Mumbai, Singapore, Tokyo, Sydney, and Los Angeles. It uses your browser'
Working Days Calculator
Count working days between two dates, excluding Saturdays and Sundays, with an optional list of public holidays. It is useful for project deadlines, leave planning, payroll periods
Frequently asked questions
Are these date tools free?
Yes. Every tool on this site is free to use, with no signup and no account required.
Do the tools work offline?
Once the page has loaded, the calculations run in your browser and do not need a server. The countdown and calendar work from your device clock.
Is my data stored?
No. All calculations run in your browser. Dates you enter are not uploaded or stored by this site.
How are time zones handled?
The time zone converter uses your browser's Intl time zone data, which includes daylight saving rules for the date you select.