Calqel logoCalqel
Home
GuidesAbout
Toolbox
Calqel logoCalqel

Free, fast and accurate online calculators for everyone.

Categories

  • Finance
  • Salary
  • Real Estate
  • Mathematics
  • Kids
  • Tailoring
  • Date & Time
  • Conversions
  • Dev Tools

Legal

  • About
  • Guides
  • Privacy Policy
  • Terms of Use

Popular Tools

  • VAT Calculator
  • Compound Interest Calculator
  • Loan Monthly Payment Calculator
  • Margin Calculator
  • Break-Even Calculator

© 2026 Calqel. All rights reserved.

Home›Dev Tools›Timestamp Converter

Timestamp Converter

Convert Unix timestamps in seconds or milliseconds into readable date formats for debugging, APIs, logs, and databases.

CalculatorHow It WorksFAQRelated Tools

What You Can Calculate

  • ISO 8601
  • UTC date
  • Local date
  • Status

Frequently Asked Questions

A Unix timestamp is the number of seconds or milliseconds elapsed since January 1, 1970 UTC.

How this calculator works

Formula explanation

The tool interprets 10-digit values as seconds and 13-digit values as milliseconds, then converts them to standard date strings.

Worked example

Example: 1712179200 -> 2024-04-03T00:00:00.000Z

Explore more tools in this category

See all calculators in Dev Tools.

Continue with related calculators

If you need a nearby calculation or want to compare a related result, these pages are the next best places to continue.

  • JSON Formatter / Validator
  • UUID Generator
  • URL Encoder / Decoder

Related Calculators

Discover similar tools to continue your calculation or compare related results.

JSON Formatter / Validator

Dev Tools

UUID Generator

Dev Tools

URL Encoder / Decoder

Dev Tools