Work through the task
Translate signed Unix integers, strict UTC timestamps or calendar dates with an explicit operation.
- Choose the direction and seconds or milliseconds where applicable.
- Use the exact stated UTC/date syntax; a local timezone is not guessed. Add-days and date-difference actions work on supported calendar dates.
- Review the result before copying or downloading. Editing an input invalidates the previous result; keep an original if the transformation matters.
Example to check
Unix -1 in seconds → 1969-12-31T23:59:59.000Z.
Limits and output behavior
Dates use supported years 0001–9999 and valid calendar values. Integer/date fields have their own length and range checks. Fractions, exponent notation and timezone-offset syntax are unsupported where the form requires a whole Unix integer or strict UTC text.
Troubleshooting
Confirm seconds versus milliseconds and the operation. Use strict supported UTC/calendar syntax, whole Unix integers and a valid year1–9999; offsets/fractional tokens are not silently guessed.
Questions
Does the conversion use my computer’s local timezone?
No. The stated timestamp/calendar operations use their explicit UTC/date rules rather than inferring a local zone.
Input and privacy
Processing runs in this browser. Inputs are not saved automatically. An explicitly chosen local draft, where offered, is plaintext storage on this device. Downloaded files, clipboard contents and browser extensions have separate retention behavior.