Convert Unix epoch seconds or milliseconds to dates and back.
Date & Time Tools
Runs in your browser
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Convert Unix timestamps, count the days between two dates, generate Discord timestamp codes, decode the time inside Snowflake IDs, compare timezones, and plan cron schedules. Everything runs locally in your browser.
Tools in this collection
See the live Unix timestamp and copy code snippets for many languages.
Count days, weeks, months, and business days between two dates, or add and subtract days.
Create <t:…> codes that show each Discord reader their own local time.
Decode the creation time inside Discord and Twitter/X Snowflake IDs.
Generate time-sortable ULIDs and read back their embedded timestamp.
Line up the same moment across several timezones.
Build and explain cron expressions with next-run previews.
A simple browser stopwatch with laps.
A countdown timer that runs in your browser tab.
Practical guides
Read real schedules and avoid timezone and day-of-week traps.
Continue exploring
JSON tools
Format, validate, and convert JSON and JSON Lines.
DevOps tools
Prepare configuration, environment files, and CI workflows.
All developer tools
Browse the full tool directory.
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