To Millis

To Millis is a fast, offline date and time converter for developers, QA engineers, and anyone who works with Unix timestamps. Convert calendar dates to Unix time in milliseconds and hexadecimal, decode timestamps back into readable dates, and measure the exact difference between two moments — all in a clean, modern interface.

KEY FEATURES

Convert
- Turn any date and time into a Unix timestamp in milliseconds.
- See the value in decimal, hexadecimal, and little-endian hex.
- Use intuitive date and time pickers, or type values directly.

Decode
- Paste a Unix timestamp (decimal or hex) and instantly get the full date and time.
- Millisecond precision.

Diff
- Enter two timestamps and get the precise gap in days, hours, minutes, seconds, and total milliseconds.

Hex byte viewer
- Break any value down into its individual bytes for a clear, low-level view.

Time zones
- Work across 17 regions with accurate time-zone handling.
- A live "today" card shows the current date, time, and zone.

Save and reuse
- Bookmark important dates with custom labels.
- Keep a copy history of your recent conversions.

Backup and export
- Optional encrypted cloud backup, protected by a PIN that only you know.
- Export and import your data as an encrypted file on your device.

Built for focus
- Beautiful dark and light themes.
- 12-hour or 24-hour time.
- Available in 8 languages.

Private by design
- No ads. No trackers. No third-party analytics.
- Works fully offline — the only network feature is your own optional cloud backup.
- Your backup is encrypted on your device before it ever leaves it and cannot be read by anyone else.

Whether you are debugging logs, building APIs, writing tests, or simply need to turn a date into a millisecond timestamp, To Millis gives you the answer in a tap.

Recent changes:
What's new in v8.2:
1: Much faster app startup.
2: Fixed a crash when opening a saved bookmark.
3: Saved bookmarks and History are now always available, not only after a conversion.
4: General stability and reliability improvements.
Thanks for using To Millis!