Timezone Converter
Free timezone converter: convert time zones, find the best meeting time with a visual heatmap, share a meeting link, and convert Unix timestamps. DST-aware.
Updated May 2026
🌆 Evening
😴 Sleeping
🌅 Early morning
Click a time slot to see all cities at that moment
CURRENT UNIX
ISO-8601 DATE
LOCAL TIME
Quick Reference
How to use this timezone converter
From the heatmap to a shareable meeting link
1. Add your cities
Search by city name or timezone abbreviation (EST, CET, IST, JST) — up to 6 cities at once.
2. Read the best-time heatmap
Green means everyone is in working hours, yellow means most people are available, red means someone is asleep.
3. Generate a meeting link
Click a cell on the heatmap and share a link that shows the meeting time already converted for each person's timezone.
What this timezone converter does
More than a simple time zone conversion
Availability heatmap
24 colour-coded cells showing where working-hours overlap across every city you've added.
Shareable meeting link
Encodes the cities and the chosen time into a URL — whoever opens it sees the meeting time in their own timezone, no math required.
Daylight saving time aware
The date picker automatically adjusts offsets that shift between seasons, so a meeting set for January stays correct in July.
Unix timestamp conversion
Converts epoch time to a readable date in UTC and in the local timezone, with a seconds/milliseconds toggle.
Common time zone abbreviations
Quick reference for the offsets you'll convert most often
When you'll reach for this tool
The scenarios that come up most often
Remote team standups
The heatmap shows the optimal overlap for New York, London and Singapore at a glance, instead of you juggling three clocks.
API debugging
When an API response returns 1714521600, see the readable date in UTC and in your local timezone immediately.
Announcing international events
Post "3 PM EST" and link the converter so a global audience can see the correct time without asking you.
Travel planning
Work out departure and arrival times across timezones to plan connections and manage jet lag.
Common mistake? Start here
Forgetting that most of the US and EU still observe DST
The offset between two cities can change by an hour depending on the date, because the US and Europe switch clocks on different weekends each spring and fall.
Not checking the specific date when converting
The gap between two timezones isn't fixed year-round if either side observes daylight saving — always convert for the actual meeting date, not just "now".
Treating GMT and UTC as identical
GMT equals UTC+0 during the UK's winter, so they line up most of the year, but they aren't technically the same thing — UTC is the time standard, GMT is a specific timezone.
Why use this timezone converter
The heatmap solves the hardest part of scheduling across very different timezones — it shows you visually where working-hours overlap actually exists, instead of making you calculate every offset by hand.
The shareable meeting link removes the "what time is that for you" back-and-forth entirely: each person opens the link and sees the time already converted to their own timezone.
UTC vs. GMT vs. daylight saving time
Three terms people mix up constantly
Frequently asked questions
UTC is the global time standard and never changes with the seasons. GMT is the specific timezone used in the UK during winter, which happens to equal UTC+0. In practice they line up most of the year, but UTC is the technical reference servers and APIs should use, while GMT is a real timezone that shifts to BST in summer.
References
The authoritative source of timezone data used by operating systems and browsers worldwide.
The native JavaScript API used for locale- and DST-aware date and time conversions.
Live current time and daylight saving schedules for cities around the world.
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