Timestamp Converter — Unix Time to Date (Both Ways)

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Epoch ↔ human date, in both directions — seconds, milliseconds, your local timezone.

Unix timestamp (seconds or milliseconds)

Or pick a date & time → timestamp

How to use this tool

1. Paste a Unix timestamp (seconds or milliseconds — the tool detects which) to see the human date in your timezone.
2. Or pick a date & time to get its timestamp, in seconds, milliseconds and ISO format.
3. Use current time fills both sides with now.

Example

1783639200 (seconds) = a moment in July 2026 — paste it and the tool shows the exact date and time in your timezone, plus the milliseconds form 1783639200000.

The formula

timestamp = milliseconds since 1 January 1970 00:00 UTC (Unix epoch)

What the result means

Unix time counts every second since 1970-01-01 UTC — the shared calendar of servers and databases. The tool auto-detects seconds vs milliseconds by magnitude (13-digit values are ms). The date shown is in your local timezone, which is why the same timestamp can 'mean' different hours to different people.

Frequently asked questions

Why does the same timestamp show different times for different people?

Timestamps are absolute (UTC-based); the clock you read is local. That's correct behavior — the moment is identical, only the timezone label differs.

Seconds or milliseconds — how do I know which I have?

10-digit numbers are seconds (until year 2286); 13-digit are milliseconds. The tool detects this automatically and labels the result.

What about dates before 1970?

They exist as negative timestamps — the tool handles them; seconds and ms both work backwards from the epoch.

Is my data private?

Yes — conversions happen entirely in your browser.

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• Circuit Cove — the island where this tool lives.
• The Main Island — drive the boat, explore the whole world.
• The 90s Kids Island — where most of us started.

Privacy & data: this tool runs entirely in your browser — nothing you type is uploaded, saved or sent anywhere. · Disclaimer: all processing happens locally in your browser — never paste production secrets or private data into any online tool, including this one. · Privacy Policy · Disclaimer