Date & Time Tools
Updated June 2026 · 100% client-side — your data never leaves your browser.
Time is deceptively hard in software: epochs and time zones, cron schedules that read like hieroglyphics, and date math that's easy to fumble. This hub collects Bytewrench's date and time utilities so you can convert timestamps, decode schedules, and measure elapsed time without reaching for a reference or a calculator.
Translate Unix epoch values to human-readable dates and back, paste a cron expression and read its schedule in plain English, work out an exact age or interval down to the day, and run a precise stopwatch or a Pomodoro focus timer right in the tab. Each tool updates live so you get an answer the moment you type.
All of this runs in your browser using your device's own clock and locale, with no server round-trips. That keeps conversions instant, works offline, and means nothing you enter is sent anywhere.
When to use these tools
- Converting a Unix timestamp from a log or database into a readable local date.
- Decoding a cron expression to confirm exactly when a scheduled job will run.
- Calculating an exact age or the number of days between two dates.
- Timing a task precisely with a stopwatch and lap times.
- Running focused work sessions with a configurable Pomodoro timer.
Tools in this category
Quick conversions
Epoch to date · Date to epoch · Cron: every 5 minutes · Cron: daily at midnight
Frequently asked questions
What is a Unix timestamp?
A Unix timestamp (or epoch time) is the number of seconds that have elapsed since 00:00:00 UTC on 1 January 1970. It's a compact, time-zone-independent way to store a moment in time, which is why databases and APIs use it so widely. The converter turns it into a readable date and back.
How do I read a cron expression?
A standard cron expression has five fields — minute, hour, day of month, month, and day of week. Paste it into the cron parser and it describes the schedule in plain English, so '0 0 * * *' becomes 'at midnight every day' without you having to decode each field by hand.
Are timestamps shown in my local time zone?
Yes. Conversions use your browser's locale and time-zone settings, and the tool also shows UTC so you can cross-check. Because it relies on your device clock, the displayed 'now' is always accurate to your machine.
Do the timers keep running if I switch tabs?
The stopwatch and Pomodoro timer track elapsed time using timestamps, so they stay accurate even if the tab is backgrounded. They run entirely client-side with no account or sync required.