UTC Converter
Convert your local time to UTC, or UTC back to your local time, in one click. Enter a date and time and instantly get the Coordinated Universal Time equivalent along with the ISO 8601 timestamp, the Unix epoch in seconds, and your time zone's current UTC offset. Daylight saving is handled automatically using your device's own time zone data.
ToolsSoup's UTC Converter is a free online tool for converting between your local time and Coordinated Universal Time (UTC). Switch the direction to turn a local date and time into UTC, or a UTC date and time back into your local clock time. Every conversion also gives you the standardized ISO 8601 timestamp, the Unix epoch in seconds, and the UTC offset your time zone is currently using. It applies daylight saving rules automatically from your device's own time zone database, and everything runs in your browser — no uploads, no sign-up, and your times never leave your computer.
What is UTC?
UTC, or Coordinated Universal Time, is the global time standard that every time zone is measured against. It does not observe daylight saving and never changes, which makes it the reference clock for servers, logs, APIs, flight schedules, and any system that has to agree on a single moment regardless of location. Your local time is simply UTC plus or minus your zone's offset — for example, New York in winter is UTC-05:00, so 12:00 local is 17:00 UTC. This converter does that math for you in both directions.
How to convert local time to UTC
Converting in either direction takes just a few seconds and updates as you type:
- Choose the direction — "Local → UTC" to turn your time into UTC, or "UTC → Local" to do the reverse.
- Enter the date and time, or click "Use current time" to load the moment now.
- Read the converted time plus the ISO 8601 string, the Unix epoch, and your zone's current UTC offset, and copy any of it with one click.
How is this different from a time zone converter?
A general time zone converter asks you to pick two arbitrary regions. This tool is focused on the single most common task — moving between your own local time and UTC — and it automatically detects your local zone so you don't have to find it in a list. It also surfaces the developer-friendly outputs you usually need alongside UTC: the ISO 8601 timestamp and the Unix epoch in seconds, neither of which a plain zone-to-zone converter gives you.
Does it handle daylight saving time?
Yes. The converter reads your browser's built-in time zone database, which knows the daylight saving rules for your region. It works out the offset that actually applies on the date you enter rather than using a fixed value, so a summer conversion and a winter conversion can differ by an hour. The "Your UTC offset" field always shows the offset in effect for the moment you converted.
Why use this UTC converter?
- Convert local time to UTC and UTC back to local time with a single toggle.
- Automatically detects your local time zone — no need to find it in a list.
- Gives you the ISO 8601 timestamp and Unix epoch in seconds alongside the result.
- Applies the correct daylight saving offset for the date you choose.
- One-click "Use current time" to convert the moment right now.
- 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 my local time to UTC?
Make sure the direction is set to "Local → UTC," enter the date and time (or click "Use current time"), and the UTC equivalent appears instantly along with the ISO 8601 timestamp, the Unix epoch, and your current UTC offset.
How do I convert UTC to my local time?
Switch the direction to "UTC → Local" and enter the UTC date and time. The tool re-expresses that instant in your detected local time zone and notes if it lands on the next or previous day.
What is the difference between UTC and GMT?
In everyday use UTC and GMT refer to the same clock time at the zero meridian. UTC is the modern, precise standard kept by atomic clocks, while GMT is the older time zone name. For converting times they are interchangeable, and this tool reports the result as UTC.
Does the converter account for daylight saving time?
Yes. It uses your browser's time zone database to apply the daylight saving rule that is actually in effect on the date you enter, so your local-to-UTC offset is correct for that specific day rather than a fixed value.
What is the Unix epoch value shown?
It is the number of seconds that have elapsed since 00:00:00 UTC on 1 January 1970, the moment many computer systems use as their zero point. Because epoch time is defined in UTC, it is identical no matter your local zone, which is why it pairs naturally with a UTC converter.
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.