Date & Time Tools

Date math, age, and timezone tools.

• Days Between Dates — How Many Days Calculator

  Find how many days are between two dates — plus weeks, months, and years. Counts calendar days inclusive or exclusive. Free, runs in your browser, no signup.

• Time Zone Converter — Convert Time Across Zones

  Convert any time across 10+ world time zones instantly. DST-aware — New York, London, Tokyo, Kolkata, Sydney & more. Runs locally in your browser, no signup.

• Unix Timestamp Converter

  Convert Unix epoch timestamps to human-readable dates and vice versa. Supports seconds and milliseconds. Instantly shows UTC and local time — no signup needed.

• Date Calculator

  Add or subtract days, weeks, months, or years from any date to find a future or past date. Handles leap years correctly — useful for deadlines, scheduling, and date math.

• Week Number

  Find the ISO 8601 week number for any date and see which dates fall in that week. Useful for project planning, payroll periods, and international reporting standards.

• Countdown Timer

  Live countdown to any future date or event — shows days, hours, minutes, and seconds remaining. Set a target date and share the link or bookmark it for quick access.

• Stopwatch

  Online stopwatch with lap tracking. Start, pause, and record lap splits — all in your browser. No install needed. Accurate to milliseconds for timing tasks, workouts, or experiments.

• Age Calculator

  Calculate your exact age in years, months, and days from your date of birth. Also shows the next birthday countdown and total days, hours, and minutes lived.