Working across time zones, tracking a deadline, or just wanting to know what time it is somewhere else — these eight tools cover the calendar and clock questions that come up constantly and are still oddly fiddly to answer by hand.
Time zones without the mental math
The time zone converter and world clock both use IANA time zone data, so they account for daylight saving correctly instead of assuming a fixed offset — a plain "+5 hours" calculation breaks twice a year in most countries, and these don't. The time zone abbreviations reference is a static, searchable list for when you just need to know what "PST" or "IST" stands for.
Durations and countdowns
The time duration calculator gives an exact span between two dates, down to the day. The countdown timer and stopwatch are live, running entirely on your device's clock — the countdown also generates embed code you can paste into another page, which updates automatically if you change the target date.
Calendar and holidays
The calendar tool generates a full year or month view, with US public holidays marked, and exports as an image or PDF for printing or sharing. Holiday data currently covers the United States only.
Nothing is uploaded
Every tool in this category runs on your device's own clock and JavaScript engine. Nothing you enter — a target date, a time zone pair, a duration — is sent anywhere.