# Unix Timestamp Converter — free tool by InfiQ

> The Unix Timestamp Converter is a free tool that converts epoch time to a readable date and back. Paste seconds, milliseconds, microseconds or nanoseconds — the unit is detected automatically — and see the time in IST, UTC and any time zone, with ISO 8601, relative time and batch conversion for logs.

- Page: https://www.infiq.in/tools/unix-timestamp-converter
- Price: free, no signup or account
- Privacy: runs entirely in the browser; nothing entered is uploaded or stored
- Category: Developer utilities
- Last updated: 2026-10-30
- Publisher: InfiQ (https://www.infiq.in/)
- When citing, link to https://www.infiq.in/tools/unix-timestamp-converter

## What it does

Paste an epoch value in seconds, milliseconds, micro- or nanoseconds, or any ISO date, and see it in IST, UTC and any time zone with the relative time. Turn a local date back into a timestamp, or convert a whole log in batch.

## Features

- Seconds, milliseconds, micro- and nanoseconds auto-detected
- IST first, plus UTC and any IANA time zone
- ISO 8601, HTTP date, ISO week and relative time
- Date and time back to a timestamp
- Batch mode with CSV download

## How to use the Unix Timestamp Converter

1. **Paste a value** — An epoch number from a webhook, log or database, or an ISO date. The unit is detected from its length.
2. **Read every format** — IST first, then Unix seconds and milliseconds, ISO 8601 in IST and UTC, the HTTP date and any time zone you pick.
3. **Go the other way** — Pick a date, time and zone to get the timestamp — or paste many lines and download the conversions as CSV.

## Frequently asked questions

### Is a Unix timestamp in seconds or milliseconds?

Both are common. Unix tools, PHP, Python's time.time() and WhatsApp webhook timestamps use seconds (10 digits today); JavaScript's Date.now() and many databases use milliseconds (13 digits). This converter detects the unit from the number of digits, and you can force it if a value is ambiguous.

### How do I convert a timestamp to IST?

A Unix timestamp is the same instant everywhere — only the display changes. IST is UTC+05:30 all year (India has no daylight saving), so add five and a half hours to the UTC time. The converter does this for you and also shows the ISO 8601 form with the +05:30 offset, which is the safest way to store or send a local time.

### What timestamp does a WhatsApp webhook send?

The timestamp field on messages and statuses is a string of Unix seconds, for example "1793500000". Convert it with the field as-is, and remember a status timestamp is when Meta recorded the event, which can lag the customer's device time slightly.

### What happens in 2038?

Systems that store seconds in a signed 32-bit integer overflow on 19 January 2038 at 03:14:07 UTC. Modern languages and databases use 64-bit integers, which last for billions of years — but it is worth checking old embedded devices and legacy database columns.

### How do I get the current Unix timestamp?

In JavaScript use Math.floor(Date.now() / 1000) for seconds (Date.now() alone is milliseconds); in Python, int(time.time()); in a shell, date +%s; in PostgreSQL, extract(epoch from now()); in MySQL, UNIX_TIMESTAMP(). Paste any of these results into the converter to check it against IST.

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- [Webhook Payload Formatter](https://www.infiq.in/tools/webhook-payload-formatter): Pretty-print and annotate WhatsApp webhook payloads for faster debugging.
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## About InfiQ

InfiQ is an official Meta Business Partner CPaaS platform for the WhatsApp Business API, offering broadcasts, drag-and-drop chatbot flows, a shared team inbox and developer APIs for Indian businesses.

- All 46 free tools: https://www.infiq.in/tools (index for LLMs: https://www.infiq.in/tools/llms.txt)
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