My tools

Time Zone Converter

Convert a moment from one zone to another — and see UTC and major cities at once.

How to use it

  1. The box starts filled with the current time in your zone. Edit it, or press “Use now” to reset it to now. Type and the table updates as you go — no button to press.
  2. Pick the “From” zone (your own by default) and the “To” zone (UTC by default). The table shows that same instant in the From zone, the To zone, UTC and a few major cities, with the To zone highlighted.
  3. The line above the table says how far ahead or behind the To zone is, and whether it lands on the next or previous day. Copy any row as “YYYY-MM-DD HH:MM:SS UTC±HH:MM”.

Example

Input

2026-01-01 12:00

From Asia/Shanghai → To UTC

From Asia/Shanghai: 2026-01-01 12:00:00 UTC+08:00
To UTC: 2026-01-01 04:00:00 UTC+00:00
America/New_York: 2025-12-31 23:00:00 UTC-05:00
Europe/London: 2026-01-01 04:00:00 UTC+00:00
Asia/Tokyo: 2026-01-01 13:00:00 UTC+09:00

UTC is 8 hours behind Shanghai, so noon in Shanghai is 04:00 UTC — and the previous evening in New York. Times without an offset are read in the From zone; add Z or ±HH:MM to give an absolute instant instead.

Rules, limits and known issues

  • From/To offer your own zone, UTC and 12 common IANA zones. For any other zone, write the offset into the input (2026-01-01T08:00:00+09:00) — the From zone is then ignored.
  • Dates must be unambiguous ISO 8601: 2026-01-01 or 2026/01/01, optionally followed by T or a space and HH:MM[:SS], optionally Z or ±HH:MM. 03/04/2026 is rejected rather than guessed.
  • Output is 24-hour and the offset is written as UTC±HH:MM, including half-hour zones such as India (UTC+05:30).
  • Local times that do not exist are errors, not adjustments: 2026-03-08 02:30 is skipped in New York and the tool will not quietly move it to 03:30. A time that happens twice, when the clocks go back, is read as the earlier one.
  • Digits may be typed as ASCII, Arabic-Indic, Persian or full-width, and bidi marks from copied Arabic text are ignored. The zone names, dates, times and offsets always come out in plain LTR text.
  • Not included: meeting-time suggestions, batch conversion, historical time-zone changes beyond your browser’s data, and links that carry the value. The input never leaves the page and never enters the URL.

What people usually need next.

Timestamp

World Clock

Date calculator