Is this converter free?

Yes, completely free with no signup and no usage limits.

Does it send any data to a server?

No. Everything runs in your browser — your input never leaves your device.

Yes. Works in Safari, Chrome, and Firefox on iOS and Android.

12時間制と24時間制の時刻表記を即時変換。

12-hour time (HH:MM AM/PM)

24-hour time (HH:MM)

Current local time:

Type a time in the 12-hour field (e.g., "2:30 PM" or "11:05 am") and the 24-hour equivalent fills in automatically.
Alternatively, type a time in the 24-hour field (e.g., "14:30" or "08:00") and the 12-hour equivalent fills in.
The panel below shows minutes since midnight, decimal time (useful for spreadsheets), and seconds since midnight.

Is this converter free?: Yes, completely free with no signup and no usage limits.
Does it send any data to a server?: No. Everything runs in your browser — your input never leaves your device.
Does it work on mobile?: Yes. Works in Safari, Chrome, and Firefox on iOS and Android.

Last updated: 2026-05-20 By jarvisbox