Free Date & Time Tools
Timezone converter, countdown timer, date calculator and more. All timezone-aware with DST support.
Age Calculator
Free age calculator. Calculate your exact age in years, months, days, hours. Find days until your next birthday.
Days Between Dates Calculator
Calculate the number of days, weeks, months, and years between any two dates. Add or subtract days from any date.
Time Zone Converter
Free online time zone converter. Convert time between different time zones worldwide. Supports daylight saving time and shows multiple cities simultaneously.
Countdown Timer
Free online countdown timer to any date and time. Create countdowns for events, holidays, deadlines, and special occasions. Live updating display.
Pomodoro Timer
Free online Pomodoro timer with customizable work and break durations, visual progress ring, and audio notifications. Boost your productivity.
Frequently Asked Questions
Are these date and time tools free?
Yes. Every tool on DateTimeTools is free to use with no registration, no limits and no sign-ups of any kind. Advertising keeps the hub free.
Does the timezone converter handle daylight saving time?
Yes. The converter uses the IANA time zone database, so DST transitions are applied automatically for every zone and date — including historical edge cases.
How accurate is the age calculator?
It counts exact calendar years, months and days between the two dates, and also shows totals in weeks, days and hours. Leap years and varying month lengths are handled automatically.
Can I count only working days between two dates?
The days-between calculator counts every calendar day and breaks the result down into weeks and days. Public holidays vary by country, so exclude them manually if you need business days only.
Do the tools send my dates anywhere?
No. All calculations run locally in your browser. The dates and times you enter never leave your device.