# Unix Timestamp Converter

> Convert Unix timestamps to human dates and back, in seconds or milliseconds.

To convert a Unix timestamp, paste the number and the human-readable date appears in UTC, your local timezone and ISO 8601 form. Paste a date instead and the timestamp is produced. Seconds and milliseconds are distinguished automatically by magnitude.

**URL:** https://convertto.tech/t/timestamp-converter
**Category:** Date & Time Tools (https://convertto.tech/c/date-time-tools)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Enter or paste your timestamp or date.
2. Choose the interpret as.
3. The result appears immediately — copy or download it.

## FAQ

### Seconds or milliseconds — how do I tell?

A current timestamp in seconds is about 10 digits; in milliseconds it is 13. This tool switches automatically above 100 billion, which covers every date from 1973 onward.

### What is the year 2038 problem?

Systems storing Unix time in a signed 32-bit integer overflow on 19 January 2038. Modern platforms use 64-bit time, which is safe for roughly 292 billion years.

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