Why use IANA names instead of GMT offsets?

GMT offsets do not account for daylight saving and are often ambiguous. IANA timezone names like America/New_York or Asia/Tokyo encode the full set of rules, including DST transitions, historical changes, and political adjustments.

Does it handle daylight saving correctly?

Yes. The IANA timezone database tracks every DST rule for every zone. Toova uses that data to compute conversions correctly across spring-forward and fall-back transitions.

Can I compare three or more zones at once?

Yes. Add as many target zones as needed and Toova shows the same instant in each, side by side.

What if a city is not in the list?

Pick the closest IANA zone — every city falls into one of about 400 zones globally. Search by country or major city to find the right zone.

Is my data sent anywhere?

No. Conversion happens entirely in your browser.

Timezone Converter — Convert Time Between Any IANA Timezones

Timezone Converter

Private by design — runs entirely in your browser

Convert a datetime across timezones in your browser. Toova handles daylight saving rules, surface IANA zone names, and shows multiple zones side by side — useful for scheduling meetings, debugging logs, or coordinating across teams.

IANA timezones, not GMT offsets

GMT+5 is ambiguous — it could be India, Pakistan, or several other regions, and the offset changes when daylight saving kicks in. IANA timezone names (America/Sao_Paulo, Asia/Tokyo, Europe/London) are unambiguous and handle DST automatically. Toova uses IANA names everywhere, with a full list and search so you can find the right zone in two keystrokes.

Compare multiple zones at once

Add as many target timezones as you need and Toova shows the same moment in each. That is the right view for scheduling a meeting across a globally distributed team, or for understanding why a customer in Tokyo and a colleague in São Paulo are seeing different times for the same event. Daylight saving transitions are highlighted when the conversion crosses one.

Browser-only

Conversions happen entirely in your browser. The datetime you paste, the zones you select, and the result — none of it leaves the page. The Network tab will stay empty during conversion, and the page works offline after first load. That makes Toova safe for working with meeting times that include client names in the input.

Frequently Asked Questions

Why use IANA names instead of GMT offsets?: GMT offsets do not account for daylight saving and are often ambiguous. IANA timezone names like America/New_York or Asia/Tokyo encode the full set of rules, including DST transitions, historical changes, and political adjustments.
Does it handle daylight saving correctly?: Yes. The IANA timezone database tracks every DST rule for every zone. Toova uses that data to compute conversions correctly across spring-forward and fall-back transitions.
Can I compare three or more zones at once?: Yes. Add as many target zones as needed and Toova shows the same instant in each, side by side.
What if a city is not in the list?: Pick the closest IANA zone — every city falls into one of about 400 zones globally. Search by country or major city to find the right zone.
Is my data sent anywhere?: No. Conversion happens entirely in your browser.