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About this tool
Convert time between Rome and Osaka with live clocks and the current, daylight-saving-aware time difference.
See what time it is in Osaka when you know the time in Rome — this converter shows both cities' clocks live and the exact current time difference between them, adjusted automatically for daylight saving. Rome runs on the Europe/Rome zone (CET) and Osaka on Asia/Tokyo (JST); the tool reads your browser's own time-zone data, so the offset is always right even across the days each city changes its clocks. Type any Rome time to pin the matching Osaka time, or press swap to convert the other way. Nothing is uploaded.
Open Rome to Osaka Time Converter on AltFTool — it loads instantly in your browser.
Read the live clocks at the top for the current time in Rome and Osaka.
Type a specific time into the Rome field to see the matching Osaka time and date.
Press swap to convert Osaka times to Rome instead.
The current local time in Rome and Osaka updates every second, with each city's UTC offset and abbreviation shown.
Offsets come from the browser's IANA time-zone database, so the difference is correct on either side of a daylight-saving change — no stale table.
Enter a specific Rome time to see the exact Osaka time for today, including the date if the conversion crosses midnight.
It runs entirely in your browser — no account, and no times are sent anywhere.
It can change through the year because one or both cities observe daylight saving, so the converter above shows the current difference live rather than a fixed number. Rome uses Europe/Rome and Osaka uses Asia/Tokyo.
Type 9:00 into the Rome field above and the converter shows the matching Osaka time for today, daylight saving included. It also shows the Osaka date in case the time crosses midnight.
Yes. It uses your browser's own time-zone data (Europe/Rome for Rome, Asia/Tokyo for Osaka), which carries each region's daylight-saving rules, so the result stays correct all year.
Yes — press the swap button and the converter flips to show Osaka → Rome, with the same live clocks and time picker.
It relies on the standard IANA time-zone database built into your browser, not an approximation, and makes no network calls, so your times stay on your device.
Add the Rome to Osaka Time Converter widget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.
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