Date to Unix Timestamp Converter
What is the Date to Unix Timestamp? Convert any calendar date and time into Unix epoch seconds and milliseconds, local or UTC. It runs entirely inside your browser — no uploads, no sign-up, no watermarks, free forever.
The reverse of our timestamp decoder: pick a date and time, choose your timezone or UTC, and get epoch seconds, milliseconds and ISO 8601 — ready to paste into cron expressions, API payloads, database seeds and signed URLs.
🔒 100% Private — runs in your browser, nothing is uploadedHow to Use This Date to Unix Timestamp Converter (Step-by-Step)
- Pick date and time — Use the picker or type directly.
- Choose UTC if needed — Servers and APIs usually expect UTC.
- Copy the seconds value — Paste into your config, payload or database.
Timezones Make This Error-Prone — Under the Hood
A wall-clock time is ambiguous without a zone: "14:00" means different instants in Delhi and Dublin. The converter asks explicitly — local or UTC — and applies the browser's IANA timezone database offset, including historical daylight-saving rules, so the epoch number you copy is the exact instant you meant.
Frequently Asked Questions
Local or UTC?
Default is your browser timezone; tick "as UTC" to match server-side values.
Why is my timestamp 5.5 hours off?
India is UTC+5:30 — switch the UTC checkbox to align with servers.
Milliseconds or seconds?
Both are shown; most APIs want seconds, JavaScript wants milliseconds.