Date & Time Tools
Age calculator, date difference, timezone converter, countdown timer, business days and more — all free, instant results in your browser.
Free Date and Time Calculators
ToollyX provides 10 free date and time tools covering the most common date-related calculations needed in daily life, business and development. All calculations run entirely in your browser using the JavaScript Date API — nothing is sent to any server and results are available instantly.
Date Calculation Tools
The Age Calculator computes your exact age in years, months and days from any date of birth — useful for official forms, medical records and birthday calculations. The Date Difference Calculator finds the exact number of days, weeks, months and years between any two dates. The Business Days Calculator counts working days between two dates while excluding weekends and public holidays — essential for project timelines and legal deadlines.
Time Zone and Timer Tools
The Time Zone Converter converts any time across 40+ world time zones with full DST (Daylight Saving Time) awareness — so you always get the correct local time regardless of the season. The Countdown Timer shows a live real-time countdown in days, hours, minutes and seconds to any future event — birthdays, product launches, exams or holidays.
Developer Date Tools
- Unix Timestamp Converter — Convert epoch seconds/milliseconds to readable dates and back.
- Week Number Calculator — Find the ISO 8601 week number for any date.
- Day of Week Calculator — Find what day any historical or future date falls on.
- World Clock — See current time in multiple cities around the world simultaneously.
- Days Until / Since — Count days until a future event or since a past date.