Date & Time Tools

How to use these Date & Time tools

This page bundles quick, accurate utilities: a date difference calculator, an add/subtract days tool, a live countdown timer, a Unix timestamp converter, and a simple world clock. Follow the steps below for each section.

1) Date difference calculator

1. Choose a Start date and an End date.
2. Click Calculate to see total days and weeks.
3. Turn on Exclude weekends (business days) if you only want Mon–Fri.

Tip: Results use an inclusive start and exclusive end window (common in scheduling).

• Example: 1 Jan → 8 Jan = 7 days (1 week 0 days).
• Business days: If the span includes a weekend, weekend days are removed when the box is ticked.
• ISO week: Badges show the ISO week number for the start and end dates.

2) Add or subtract days

1. Select a Start date.
2. Enter Days (positive to add, negative to subtract).
3. Click Compute to get the new date.

Skip weekends if you want business-day rolling (no Sat/Sun counted).

• Example (calendar): 15 May + 30 days → shows the exact future date.
• Example (business): 15 May + 10 (skip weekends) → moves through weekdays only.

3) Countdown timer online

1. Pick a Target date and Time.
2. Click Start to run a live countdown (days • hours • minutes • seconds).
3. Click Stop to pause it.

Note: The timer uses your device timezone. Set 31 Dec 23:59 for a New Year countdown.

4) Unix timestamp converter

1. To convert Unix → Date: enter Unix seconds and click → Date.
2. To convert Date → Unix: set a Date and Time, then click → Unix.
3. Use Now to fill the current epoch time instantly.

Quick refresher: Unix time is seconds since 1 Jan 1970 00:00:00 UTC.

5) World clock

1. Select one or more time zones from the list.
2. Click Show to display local time for each zone, updating every second.
3. Click Stop to freeze the display.

Times are formatted using your locale and the selected IANA zones (e.g., Europe/London, America/New_York).

Quick FAQ