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タイムゾーン変換

タイムゾーン間で時刻を変換

ブラウザで動作 · アップロード不要

このツールとページ内の説明は、現在は英語のみです。動作は同じで、すべてブラウザ内で実行されます。

The same moment in

Time zoneTimeUTC offsetRemove
  • 何も端末から出ません
  • サーバーによるサイズ制限なし
  • 登録不要・透かしなし
  • 無料

How to convert a time between time zones

  1. Choose the date and time, and the time zone it is in (yours is chosen to start).
  2. Read the same moment in the other cities; add or remove cities as you need.
  3. Copy all the times to share them.

Good to know

  • Daylight saving time is worked out for the date you pick, using your browser's own time-zone data, which covers the past and the coming years.
  • Time zones are named after a large city (America/Chicago, Asia/Singapore). Type a city to add it.
  • A "+1 day" or "−1 day" means the date is different there.
  • When clocks go forward, one hour doesn't exist that night; if you pick a time in it, the page says which time is used.

よくある質問

Is UTC the same as GMT?

For everyday use, yes: both have no offset. UTC never changes; the UK uses GMT in winter and BST (UTC+1) in summer.

Is anything sent anywhere?

No. The calculation happens in your browser as you type; nothing is sent anywhere.