Time & Date Tools

Convert Unix epochs, shift across IANA timezones, and build cron expressions.

Time is surprisingly hard: epochs come in seconds or milliseconds, timezones carry their own rules and daylight-saving changes, and cron has its own compact syntax. This page keeps the most-used time tools together. Epoch conversion shows both UTC and your local time; the timezone converter uses the browser Intl API with IANA names such as America/New_York; and the cron builder assembles a valid five-field expression from simple inputs. The flagship Cron Parser and Epoch Converter live as their own deep pages, linked from here.

Unix Timestamp to Date

Convert a Unix timestamp in seconds to a readable UTC and local date.

Example

1752739200 → 2026-07-17T00:00:00Z

Seconds only?

Yes, use Milliseconds tool for ms.

Date to Unix Timestamp

Convert a date string into Unix seconds and milliseconds.

Example

2026-07-17 00:00 → 1752739200

Which timezone?

Interpreted as your local time by default.

Milliseconds to Date

Convert a millisecond epoch to a readable date, for high-precision timestamps.

Example

1752739200000 → 2026-07-17T00:00:00Z

Auto-detect?

The Epoch Converter detects both.

Timezone Converter

Convert a time between any two IANA timezones using the Intl API.

Example

2026-07-17 12:00 UTC → 08:00 America/New_York

DST handled?

Yes, Intl applies current rules.

UTC to EST

Convert UTC to US Eastern Time (America/New_York), accounting for DST.

Example

12:00 UTC → 08:00 EST/EDT

EST vs EDT?

The converter shows the active offset automatically.

UTC to CST

Convert UTC to US Central Time (America/Chicago).

Example

12:00 UTC → 07:00 CST/CDT

Linked to EST?

Central is one hour behind Eastern.

UTC to PST

Convert UTC to US Pacific Time (America/Los_Angeles).

Example

12:00 UTC → 05:00 PST/PDT

Used where?

US West Coast.

UTC to CET

Convert UTC to Central European Time (Europe/Paris).

Example

12:00 UTC → 13:00 CET/CEST

Summer time?

CEST applies in summer.

UTC to IST

Convert UTC to India Standard Time (Asia/Kolkata, UTC+5:30, no DST).

Example

12:00 UTC → 17:30 IST

Half-hour offset?

Yes, India uses +5:30.

UTC to JST

Convert UTC to Japan Standard Time (Asia/Tokyo, UTC+9).

Example

12:00 UTC → 21:00 JST

DST?

Japan does not observe DST.

UTC to AEST

Convert UTC to Australian Eastern Time (Australia/Sydney).

Example

12:00 UTC → 22:00 AEST/AEDT

Southern DST?

AEDT applies in Australian summer.

Cron Builder

Compose a valid five-field cron expression from minutes, hours, day, month and weekday inputs.

Example

m=*,h=9 → 0 9 * * *

Output format?

Standard minute hour dom month dow.