01 — Ranking
Other free options, ranked
timeanddate.com
timeanddate.com
4.6The reference for time zones, with a meeting planner and DST schedules.
- Best for
- Checking DST change dates and planning meetings across many cities.
- Free plan & limits
- Free with ads. An ad-free subscription is available. Its meeting planner is very thorough but complex.
World Time Buddy
worldtimebuddy.com
4.5A visual slider that lines up hours across cities.
- Best for
- Finding a meeting slot across 3–4 time zones at a glance.
- Free plan & limits
- Free for up to 4 locations, with ads. Pro (about $2/month) adds more cities and calendar sync.
Google Calendar (secondary time zone)
calendar.google.com
4.2Shows a second time zone next to your calendar grid.
- Best for
- People who work with one other time zone every day.
- Free plan & limits
- Free. Settings → Time zone → Display secondary time zone. Limited to one extra zone in the grid.
Phone World Clock
support.apple.com
3.9Built-in world clock on iOS and Android.
- Best for
- Checking the current time elsewhere.
- Free plan & limits
- Free and works offline. It only shows the current time and can't convert a future meeting time.
02 — Comparison
Side by side
Scroll sideways to see every tool. The first column stays pinned.
| Feature / Criterion | This converter | timeanddate | World Time Buddy | Google Calendar |
|---|---|---|---|---|
| Convert a future date and time | Yes | Yes | Yes | Yes |
| Number of cities | Unlimited | Many | 4 free | 1 extra |
| Next / previous day flag | Yes | Yes | Visual | No |
| Ads | No | Yes | Yes | No |
| Account required | No | No | No | Yes |
03 — Guide
How to convert time zones for a meeting step by step
Set the source time zone
Use the organizer's zone, for example America/New_York. Use city names rather than abbreviations: 'CST' can mean US Central, China or Cuba Standard Time.
Add every participant's city
Type a city in IANA format (Europe/Berlin, Asia/Singapore). Your list is saved in this browser for next time.
Check DST weeks carefully
The US and Europe change clocks on different dates (US: second Sunday in March and first Sunday in November. EU: last Sunday in March and October). For 1–3 weeks a year, the usual gap shrinks by an hour.
Send the invite in UTC or with a calendar link
Calendar invites convert automatically for each guest. In plain text, write both times, for example '15:00 UTC (11:00 New York / 17:00 Madrid)'.
04 — FAQ
Common questions
What is the difference between UTC and GMT?
For everyday use they are the same time. UTC is the atomic time standard. GMT is a time zone used by the UK in winter. The UK switches to BST (UTC+1) in summer, while UTC never changes.
Why are some time zones offset by 30 or 45 minutes?
Some countries chose offsets based on their solar time: India uses UTC+5:30, Nepal UTC+5:45 and parts of Australia UTC+9:30. The converter handles these offsets automatically.
Does the converter handle daylight saving time?
Yes. It uses your browser's IANA time zone database, which includes the DST rules and historical changes for each region. The result is correct for the specific date you choose, not just for today.
Is this time zone converter free?
Yes. It has no ads and needs no account. Your saved cities stay in your browser's local storage.
Scores reflect our own assessment of free-tier value. Prices and limits change, so check them on each provider's site before you buy.