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Unix Timestamp Converter Runs in your browser. No input data is sent to our server.

Paste an epoch timestamp or an ISO-style datetime, choose how to interpret it, and get readable time details instantly. This page is useful for logs, API payloads, schedulers, analytics events, and debugging time-based data.

Converted time details

Paste content and run the tool instantly.

This tool runs entirely in your browser, so you can inspect, transform, or generate developer text without sending it to a remote processing service.

Convert Unix Timestamps And ISO Datetimes Online

Convert Unix timestamps and ISO-style datetimes online into readable UTC, local, and timezone-specific results.

How to use Unix Timestamp Converter

1

Paste content into the timestamp or iso datetime input panel.

2

Adjust the available options, then run the tool.

3

Copy or download the result once it looks right.

Why this helps in real workflows

A log entry or API payload contains a raw epoch value.

You need to compare Unix seconds and milliseconds quickly.

A scheduler or analytics event timestamp needs a readable datetime.

You want to convert an ISO datetime into epoch time for testing.

Which tool should you choose?

Unix Timestamp Converter: Choose this when you need to move between epoch values and readable datetimes.

Timezone Converter: Choose Timezone Converter when you already have a datetime and want to view it across timezones.

Common problems and fixes

I do not know if the timestamp is in seconds or milliseconds.

Use auto-detect first, then switch the timestamp unit manually if the result looks wrong.

I need to see the same instant in a specific timezone.

Choose the display timezone and the tool will show the converted local time for that zone.

I have a readable datetime and need the raw epoch value.

Paste an ISO-style datetime and the tool will return Unix seconds and milliseconds.

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Frequently asked questions

How do I convert a Unix timestamp?

Paste the timestamp, choose seconds or milliseconds if needed, and the tool will show readable UTC and timezone-based outputs.

Can I convert a datetime back into epoch time?

Yes. Paste an ISO-style datetime such as 2026-03-27T14:30:00 and the tool will return Unix seconds and milliseconds.

How do I tell if a timestamp is in seconds or milliseconds?

Seconds-based timestamps for recent dates are around 10 digits (e.g., 1711540800). Milliseconds are 13 digits (e.g., 1711540800000). Use auto-detect and check if the resulting date looks reasonable.

What is Unix time (epoch time)?

Unix time counts the number of seconds that have elapsed since January 1, 1970 at 00:00:00 UTC. It's used as a universal timestamp in logs, APIs, databases, and scheduling systems.

Why do some APIs return milliseconds instead of seconds?

Milliseconds give higher precision for events that happen faster than once per second — like analytics events, audit logs, or high-frequency trading. JavaScript's Date.now() returns milliseconds, which is why many JS-based systems use it.

Is this timestamp converter free?

Yes. It runs directly in your browser and is free to use.