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London to UTC Time Converter

Convert time between London and UTC with live clocks and the current, daylight-saving-aware time difference.

About this tool

London to UTC Time Converter

Convert time between London and UTC with live clocks and the current, daylight-saving-aware time difference.

See what time it is in UTC when you know the time in London — this converter shows both cities' clocks live and the exact current time difference between them, adjusted automatically for daylight saving. London runs on the Europe/London zone (GMT) and UTC on UTC (UTC); the tool reads your browser's own time-zone data, so the offset is always right even across the days each city changes its clocks. Type any London time to pin the matching UTC time, or press swap to convert the other way. Nothing is uploaded.

How to use London to UTC Time Converter

  1. 1

    Open London to UTC Time Converter on AltFTool — it loads instantly in your browser.

  2. 2

    Read the live clocks at the top for the current time in London and UTC.

  3. 3

    Type a specific time into the London field to see the matching UTC time and date.

  4. 4

    Press swap to convert UTC times to London instead.

Why use London to UTC Time Converter

  • Live clocks for both cities

    The current local time in London and UTC updates every second, with each city's UTC offset and abbreviation shown.

  • Daylight-saving aware

    Offsets come from the browser's IANA time-zone database, so the difference is correct on either side of a daylight-saving change — no stale table.

  • Pick any time

    Enter a specific London time to see the exact UTC time for today, including the date if the conversion crosses midnight.

  • Free and private

    It runs entirely in your browser — no account, and no times are sent anywhere.

Common use cases

  • Scheduling a call or meeting between London and UTC without miscounting the hours.
  • Working out when a live event in UTC starts in London local time.
  • Planning travel or a deadline across the London–UTC time difference.

Frequently asked questions

What is the time difference between London and UTC?

It can change through the year because one or both cities observe daylight saving, so the converter above shows the current difference live rather than a fixed number. London uses Europe/London and UTC uses UTC.

What time is it in UTC when it's 9:00 AM in London?

Type 9:00 into the London field above and the converter shows the matching UTC time for today, daylight saving included. It also shows the UTC date in case the time crosses midnight.

Does this converter handle daylight saving between London and UTC?

Yes. It uses your browser's own time-zone data (Europe/London for London, UTC for UTC), which carries each region's daylight-saving rules, so the result stays correct all year.

Can it convert UTC time to London time as well?

Yes — press the swap button and the converter flips to show UTC → London, with the same live clocks and time picker.

Is the London to UTC time conversion accurate and private?

It relies on the standard IANA time-zone database built into your browser, not an approximation, and makes no network calls, so your times stay on your device.

Embed this tool on your site

Add the London to UTC Time Converter widget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.

<iframe src="https://www.altftool.com/embed/widget/london-to-utc-time-converter"
  title="London to UTC Time Converter — free AltFTool widget"
  width="100%" height="640" style="border:0;border-radius:12px;overflow:hidden"
  loading="lazy" referrerpolicy="no-referrer-when-downgrade" allow="clipboard-write"></iframe>
<p style="font-size:12px;margin:4px 0 0">Widget by <a href="https://www.altftool.com/tools/all/london-to-utc-time-converter?utm_source=embed&amp;utm_medium=widget" rel="nofollow">AltFTool — free online tools</a></p>

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