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Log lines and APIs disagree: some emit ten-digit seconds since 1970, others thirteen-digit milliseconds like Date.now(). Here, digit length guides interpretation — thirteen or more digits as milliseconds, otherwise seconds. When a hard limit matters, confirm against the system that produced the number.
The date-to-timestamp path uses the JavaScript Date parser on what you paste. ISO-8601 works well; ambiguous locale strings follow the browser's rules. Output includes seconds, milliseconds, and ISO for the instant.
No timezone picker beyond your browser's local zone for the local line. No cron scheduling, no special handling for 32-bit Y2038 edge cases, and no nanosecond precision.
That is the promise behind every tool here. Files are read in your browser tab, processed there, and discarded when you close it — never uploaded to our servers.
Decode JSON Web Tokens (JWT) safely to view header and payload without sending secrets to any server.
Parse standard 5-field cron expressions, read them in plain English, and see the next five run times.
Format, validate, prettify and beautify your JSON data instantly.
Format, beautify, and strictly align your messy SQL queries securely.
Generate valid universally unique identifiers (UUIDs/GUIDs) instantly.
Test, visualize, and debug Regular Expressions instantly in your browser.
