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Time tool

Timestamp Converter - Unix Time Converter

Prepare Unix timestamps, dates with seconds and API date ranges with individually copyable outputs.

ConvertEnter timestamp or date with seconds
API rangeGenerate startDate, endDate and timeSpan
ResultReady
Unix seconds-
Unix milliseconds-
UTC-
Local-
Timezone-

Practical guide

Convert Unix timestamps, local dates and API ranges

Convert local dates with seconds into Unix seconds, milliseconds and UTC, and generate separately copyable startDate and endDate API values.

What is a Timestamp Converter?

This tool streamlines workflows such as inspecting log time and preparing api date filters in one place.

How to use it

  1. Enter a timestamp or local date with seconds.
  2. Choose conversion direction.
  3. Set start, end and a preset duration for API ranges.

Common uses

  • Inspecting log time
  • Preparing API date filters
  • Converting JWT exp/iat

Practical examples

Unix milliseconds

Convert the 13-digit time used by JavaScript and some APIs.

API range

Copy startDate and endDate UTC output from separate fields.

Frequently asked questions

What is the difference between seconds and milliseconds?

Unix seconds are usually 10 digits and milliseconds 13 digits.

Does time zone affect the result?

Yes. The browser time zone is used when converting local time to UTC.

Related tools

Time Difference Calculator Calculate detailed elapsed time between two dates. JWT Decoder Read token date claims. Cron Generator Schedule tasks using converted times.

Related guides

JWT date claims Read about exp and iat claims. Cron and scheduling Learn scheduled task fields.