Time Zone Converter
Pick a date and time in one time zone and see it in another, along with the UTC time and the hour difference. Uses your browser's own time-zone database, so daylight saving is handled.
- Runs entirely in your browser
- No sign-up, no watermark
- Free and unlimited
🔒 Your file stays on your device
How to use Time Zone Converter
- 1
Open Time Zone Converter and fill in the fields.
- 2
Pick any options that apply.
- 3
Read the result straight away — it recalculates as you type.
What you get
- 24 common zones
- Daylight-saving aware
- Shows UTC and the hour difference
What happens to your files
This tool runs entirely in your browser. The file you choose is read into memory, processed on your device, and offered back as a download. Nothing is uploaded and nothing is kept once you leave the page.
There is no account, no email, no watermark and no daily limit. Come back whenever you need it.
Frequently asked questions
- How is daylight saving handled?
- The conversion uses the Intl time-zone database built into your browser, which knows each zone's DST rules for the date you enter.