Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa instantly. Supports seconds, milliseconds, nanosecond precision, and local time zone conversion.

Unix Timestamp (seconds)

Readable Date

Timestamp Converter

Timestamp Converter is a 100% secure, browser-based developer tool to instantly convert Unix timestamps to human-readable dates and vice versa. All calculations happen locally on your device with zero data uploads.

🔒 Client-side only⚡ Web Worker processing🌐 Works offline🛡️ Zero server logs

How to Convert Unix Timestamps

Enter a Unix timestamp (in seconds) into the input field.
Click the Now button to insert the current timestamp instantly.
The equivalent UTC and local date are displayed in real time — use Copy to save the result.

Frequently Asked Questions

Got questions about privacy or functionality? We’ve got answers.

Is the Timestamp Converter safe to use?

Yes, absolutely. All timestamp calculations run locally in your browser. No data is ever sent to any server. Your inputs never leave your device.

What is a Unix timestamp?

A Unix timestamp is the number of seconds that have elapsed since January 1, 1970 (UTC). It is widely used in programming for storing dates as integers, making date arithmetic simple.

Why does the tool use seconds instead of milliseconds?

Unix timestamps are conventionally specified in seconds. Many programming languages and APIs (including Python, PHP, and MySQL) use seconds. If your value is in milliseconds, divide by 1000 first.

Automated E2E Test Suite Logs

Our build systems validate edge-case processing under extreme conditions before each deployment.

Stability

100.0%

Passed

25/25

Env

V8-Sandbox

Engine: Vitest RunnerUpdated: 2026/6/10 02:04:12📦 Download Test Datasets

PASSparseTimestamp should parse a valid timestamp string from fixture

PASSparseTimestamp should parse zero (Unix epoch) from fixture

PASSparseTimestamp should return NaN for empty input

PASSparseTimestamp should return NaN for whitespace-only input

PASSparseTimestamp should return NaN for non-numeric text

PASSparseTimestamp should parse negative numbers from invalid fixture

PASSisValidTimestamp should return true for a standard positive timestamp

PASSisValidTimestamp should return false for zero

PASSisValidTimestamp should return false for negative numbers

PASSisValidTimestamp should return false for NaN

PASSisValidTimestamp should return false for Infinity

PASStimestampToUTCString should convert a standard timestamp to UTC string

PASStimestampToUTCString should return empty string for invalid timestamp

PASStimestampToUTCString should handle max safe integer timestamp

PASStimestampToLocaleDateString should convert a standard timestamp to locale date

PASStimestampToLocaleDateString should return empty for invalid timestamp

PASSgetCurrentTimestamp should return a positive number close to now

PASSTimestamp Converter renders input and output labels

PASSTimestamp Converter shows Now button

PASSTimestamp Converter shows Date output label

PASSTimestamp Converter shows Copy and Clear buttons

PASSTimestamp Converter renders a number input for timestamp

PASSTimestamp Converter shows converted date after entering a valid timestamp

PASSTimestamp Converter shows empty result for empty input

PASSTimestamp Converter shows seconds and local date metadata when timestamp is valid

⏱️ 0.18ms📦 1.5KB🎚️ Max Nesting: 3🌿 AST Nodes: 48🛡️ V8 Heap: Healthy

$ codecaven-validator --scope=tool● CLUSTER COMPLIANT

Tool Changelog & Updates

v1.0.02026-05-25

Feature: Initial release with Unix timestamp to readable date conversion.
UX: Instant Now button for current timestamp, Copy and Clear controls.