Timestamp Converter

A timestamp converter that translates between unix epochs (seconds or milliseconds) and human-readable UTC/IST dates instantly.

Computers timestamp everything as seconds (or milliseconds) since 1 January 1970 UTC — the unix epoch. It's a wonderfully unambiguous format for machines and a completely opaque one for humans: nobody reads 1783247400 and thinks "early July 2026". Whenever you're staring at a log line, an API response, a database row or a JWT claim, this converter translates in both directions instantly.

Paste a number and it becomes a date, shown simultaneously as an ISO 8601 UTC string, Indian Standard Time in full, the equivalent in both seconds and milliseconds, and a relative description like "3 days ago". The seconds-vs-milliseconds trap is handled automatically by length — a 10-digit number is seconds, 13 digits is milliseconds — which matters because confusing them puts your date in 1970 or in the year 57,000. Paste an ISO date string instead and you get its timestamps; type nothing (or "now") for the current moment.

The dual UTC/IST display earns its place in Indian engineering work: servers, databases and APIs conventionally run on UTC while your users, logs dashboards and stand-up conversations run on IST, five and a half hours ahead. That half-hour offset (UTC+5:30) breaks the mental arithmetic that works for whole-hour zones, so having both printed side by side prevents the classic off-by-a-timezone bug in cron schedules, report boundaries and expiry checks.