Timezone Converter
Same instant in multiple zones.
Loading tool
Pick a source zone and a target zone. The instant stays the same; wall clocks change. DST is applied by the browser's ICU data.
How to use this tool
- Enter the source value. Type the number, color, or timestamp you want to convert.
- Pick the target unit. Choose the output system. Conversion runs locally.
- Copy the converted value. Use Copy when you need the result elsewhere.
Abbreviations
Prefer IANA names such as America/New_York. CST is ambiguous across continents.
Frequently asked
Why is the offset different in July?
Daylight saving. The converter uses the date you entered, not today's offset alone.
Can I add a third city?
Yes. The list accepts several targets.
Does it use my computer clock?
Your device provides zone data and 'now'. You can also type a specific instant.
Are historical offsets accurate?
As accurate as the browser's timezone database for that date.
Can I share a link with the zones filled?
Copy the URL. Zones and the timestamp are in the query string.