Time Zone Converter
Convert a date and time from one time zone to another. Pick a source and target zone to see the converted time, the UTC offsets, the difference between zones, and whether the result lands on the same, next, or previous day.
ToolsSoup's Time Zone Converter is a free online tool that converts a date and time from one time zone to another in an instant. Choose the date and time, pick the zone it's in and the zone you want, and see the converted clock time, the day it falls on, each zone's UTC offset, and the exact difference between them. It automatically accounts for daylight saving time using your device's own calendar data, so the result matches what people in the target zone will actually see on the clock. Everything runs in your browser — no uploads, no sign-up, and your times never leave your device.
What is a time zone converter?
A time zone converter takes a moment in time expressed in one time zone and tells you what the clock reads at that same instant somewhere else. Because zones are offset from Coordinated Universal Time (UTC) by different amounts — and many of them shift by an hour for daylight saving — converting in your head is error-prone. This tool does it precisely: it figures out the real instant your entered time represents, then re-expresses it in the target zone, including a note for when the conversion crosses midnight into the next or previous day.
How to convert between time zones
Converting a time takes only a few seconds and updates as you change any field:
- Enter the date and time you want to convert, or click "Use current time" to load the time now.
- Pick the source zone in "From time zone" and the destination in "To time zone" (use the swap button to flip them).
- Read the converted time, the day it lands on, each zone's UTC offset, and the hour difference between the two zones.
Does it handle daylight saving time?
Yes. The converter uses your browser's built-in time zone database, which knows the daylight saving rules for each region. It works out the UTC offset that applies to your specific date — not a fixed offset — so a conversion in July and one in January for the same pair of zones can differ by an hour when one side is observing daylight saving. The offsets shown next to each zone reflect the rule in effect for the date you entered.
Why does the day sometimes change?
When two zones are far apart, the same instant can fall on a different calendar day in each place. For example, an evening in New York is the following morning in Tokyo. The converter shows a "Next day" or "Previous day" note whenever the converted time lands on a different date than the one you entered, so you don't accidentally schedule a call a day off.
Why use this time zone converter?
- Converts any date and time between dozens of major world time zones.
- Automatically applies the correct daylight saving offset for the date you choose.
- Shows each zone's UTC offset and the exact hour difference between them.
- Flags when the converted time falls on the next or previous day.
- One-click "Use current time" and a swap button to flip the two zones.
- Runs entirely in your browser — your times are never uploaded to a server.
- 100% free with no ads, sign-up, or limits.
Frequently asked questions
How do I convert a time from one time zone to another?
Enter the date and time, choose the zone it's in under "From time zone" and your target under "To time zone," and the converted time appears instantly along with the day, the UTC offsets, and the difference between the zones.
Does the converter account for daylight saving time?
Yes. It uses your browser's time zone database to apply the daylight saving rule that's actually in effect on the date you enter, so the offset for each zone is correct for that specific day rather than a fixed value.
Why does the converted time show a different day?
When two zones are many hours apart, the same instant can land on a different calendar date in each one. The tool adds a "Next day" or "Previous day" note so you can see at a glance that the result crossed midnight.
What does the UTC offset mean?
The UTC offset is how far ahead of or behind Coordinated Universal Time a zone is — for example, UTC-05:00 is five hours behind UTC. The difference shown is simply the gap between the source and target offsets for your chosen date.
Are my times kept private?
Yes. All conversions run locally in your browser using JavaScript and your device's time zone data, so the dates and times you enter are never sent to or stored on any server.