World Time Zone Converter
Convert a date and time from one time zone into multiple destination zones
World Time Zone Converter — what it does
Convert a date and time from one time zone into several destination zones at once, so a proposed meeting slot can be checked against everyone's local clock before it is sent. Comparing all the destinations side by side is what catches the participant for whom your afternoon is the middle of the night.
When this tool helps
- Finding a meeting time that is reasonable for a team spread across several countries.
- Converting a webinar or deadline time into the zones your audience is in.
- Checking when a scheduled release or maintenance window lands for each region.
How to use it
- Enter the source date and time.
- Choose the source time zone.
- Select the destination time zones.
- Convert and read every local equivalent.
Accuracy, limits, and good practice
- Always state the zone when you write a time down. "3pm" in an invitation to three countries is an ambiguity, not a time.
- Daylight saving shifts on different dates in different regions, so a fixed weekly meeting drifts by an hour for some participants twice a year.
- A few zones use half-hour and 45-minute offsets — India, Nepal and parts of Australia — which is why guessing offsets by continent fails.
Frequently asked questions
Does it account for daylight saving?
Conversions use zone rules for the date given, so a summer date and a winter date convert differently, as they should.
What is UTC?
The global reference time, with no daylight saving. Quoting UTC alongside local time removes ambiguity in written schedules.
Why does my usual meeting time shift twice a year?
Regions change clocks on different dates, so for a few weeks the gap between two zones is an hour different from usual.
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Everything above runs inside this page. World Time Zone Converter needs no account, no upload, and no server round trip — close the tab and nothing is left behind.
世界時區轉換器能做什麼
把一個日期時間從來源時區一次換算到多個目的地時區，讓提案的會議時段在寄出前就先對過每個人的當地時鐘。把所有目的地並排比較，才抓得到那位「你的下午等於他的半夜」的參與者。
什麼時候用得上
- 為分散在多國的團隊找出對大家都合理的會議時間。
- 把線上講座或截止時間換算成受眾所在時區。
- 確認排定的發布或維護時段在各地區分別是幾點。
使用步驟
- 輸入來源日期與時間。
- 選擇來源時區。
- 選擇目的地時區。
- 換算並查看各地當地時間。
精確度、限制與實務建議
- 寫時間一定要標時區。寄給三個國家的邀請寫「下午三點」，那是歧義，不是時間。
- 各地日光節約時間的切換日期不同，因此固定的每週會議每年會有兩次對某些人漂移一小時。
- 少數時區使用半小時或 45 分鐘偏移——印度、尼泊爾與澳洲部分地區——所以照洲別猜偏移一定會錯。
常見問題
有考慮日光節約時間嗎？
換算會依該日期適用的時區規則進行，因此夏季與冬季日期的換算結果不同，本來就該如此。
UTC 是什麼？
全球參考時間，沒有日光節約。在書面排程中同時標註 UTC 與當地時間，可消除歧義。
為什麼固定會議一年會偏兩次？
各地區換時制的日期不同，因此有幾週兩個時區之間的時差會與平常差一小時。
本站相關工具
- 檔案傳輸時間計算器 — 依檔案大小、網路速度與協定損耗估算上傳或下載時間
- ROI 投資回報率計算 — 計算投資回報率、淨收益與年化回報率
- 工時計算器 — 計算實際工時、休息時間與預估薪資
以上步驟全部在這個頁面內完成，世界時區轉換器 不需要註冊、不上傳檔案、也不經過伺服器，關閉分頁後不會留下任何資料。