How do I convert a Unix timestamp to a readable date?

Open the Timestamp → Date tab, paste the number into Unix Timestamp, and the tool shows local time, UTC and ISO 8601. Pick the Unit; a hint suggests the likely one from the digit count, such as 10 digits for seconds or 13 for milliseconds.

Why does my timestamp show a date in 1970 or far in the future?

The unit is probably wrong. Seconds read as milliseconds give a date in January 1970, and milliseconds read as seconds give a far-future date. Use the Unit setting, or click the Switch to hint shown when a mismatch is detected.

How do I get the Unix timestamp for a specific date and time?

Choose the Date → Timestamp tab, enter your date and time, and the tool returns the value in seconds and in milliseconds. Use Now to fill in the current moment.

Can I see the same moment in other time zones?

Yes. Use Add timezone under Other timezones to pin IANA zones such as America/New_York or Asia/Tokyo. Each pinned zone shows the same moment, and each can be removed with its Remove button.

Does the timestamp converter send my timestamps anywhere?

No. Conversion uses the browser's built-in JavaScript Date and Intl APIs, with no third-party library or server call, so the values you enter stay in your browser.

Yes. Every tool is free to use, with no account and no credit card. The work runs on your device rather than on our servers, which is what keeps it free to run.

Does it work on mobile?

Yes. It runs in current mobile browsers on iOS and Android, with nothing to install.

🕐

Free Timestamp Converter

Convert Unix timestamps to readable dates and vice versa. Supports UTC and local time, seconds and milliseconds.

Runs in your browserNo sign-up, no pop-upsNo login requiredFree forever

Works offline once loaded

Now:

Unit:secondsmillisecondsmicrosecondsnanoseconds

Unix Timestamp

Epoch quick reference

Common uses

Convert Timestamps in Analytics DataTranslate Unix timestamps from analytics exports (Google Analytics, Mixpanel, Amplitude) into readable dates.
Convert Timestamps for DebuggingDecode Unix timestamps from server logs, error payloads, and API responses into readable dates.
Convert Timestamps in API DevelopmentValidate, compare, and translate Unix timestamps returned by REST APIs and webhooks.
Convert Timestamps for Database QueriesConvert dates to Unix timestamps for SQL WHERE clauses and date-range queries.
Convert Timestamps for SchedulingConvert specific dates and times to Unix timestamps for use in scheduling systems and calendar APIs.

How It Works

All conversion runs directly in the browser using JavaScript's built-in Date object and the Intl suite (Intl.RelativeTimeFormat, Intl.DateTimeFormat, Intl.supportedValuesOf) — no third-party library, no server round-trip. The only data that leaves your machine is nothing: the numbers stay local.

1
Unit detection and normalization
When you paste a timestamp, the tool counts its digits to infer the unit automatically: 10 digits means Unix seconds, 13 milliseconds, 16 microseconds, 19 nanoseconds. A hand-written digit-count heuristic flags a mismatch and offers a one-click unit switch, preventing silent mistakes like treating a 13-digit millisecond value as a year-55881 seconds value.
2
Date construction via JavaScript Date
The raw number is scaled to milliseconds and passed to new Date(ms). From there the built-in Date methods (getFullYear, getUTCHours, toISOString, etc.) produce local time, UTC time, and ISO 8601 output — no parsing library involved.
3
Locale-aware relative time via Intl.RelativeTimeFormat
A live ticker fires every second and recomputes the relative label (e.g. '3 days ago', 'in 2 hours') using Intl.RelativeTimeFormat seeded with the page locale. This keeps the relative display accurate even if you leave the tab open, and produces grammatically correct output in every supported language without extra translation strings.
4
Timezone display via Intl.DateTimeFormat
Pinned IANA timezones (e.g. America/New_York, Asia/Tokyo) are formatted with Intl.DateTimeFormat using the timeZone option. The full list of browser-supported zone names comes from Intl.supportedValuesOf('timeZone'). Your pinned zones persist across sessions in localStorage.

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Free Timestamp Converter

Common uses

How It Works

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Frequently Asked Questions