Basetime

Developer time tools, epoch & UTC

Fast, ad-free time utilities for developers: convert Unix timestamps to dates and back, and read the current UTC time as ISO 8601 or an epoch. Everything runs in your browser, nothing is logged.

Unix timestamp converter
epoch to date, s and ms
Current UTC time
GMT, Zulu, ISO 8601
All IANA timezones
offsets, DST, copy ids
Workdays between dates
business-day counter
Add workdays to a date
deadline calculator
Weekday of any date
plus ISO week number

Most timestamp and UTC converters online are buried under banner ads and interstitials, which is a strange fate for something you reach for mid-task, dozens of times a day. These are the opposite: they load instantly, do one thing well, and let you copy any value with a single tap. The epoch converter auto-detects seconds versus milliseconds and shows UTC, your local time and a relative phrase; the UTC clock gives you the current time as a wall clock, an ISO 8601 string and a Unix timestamp.

Everything is computed client-side from your device's own clock and time zone, so there's nothing to sign up for and nothing to trust with your data. More developer utilities, duration and cron helpers among them, are on the way.

FAQ

Are these tools free and private?

Yes. They run entirely in your browser, no sign-up, no ads, and nothing you type is sent anywhere or logged.

Do the values update live?

The current Unix time and the UTC clock tick in real time, so you can grab an accurate 'now' at any moment.