Timestamp Converter Online — Convert Unix Timestamps to Readable Dates

You're looking at a database record and you see 1746789600. That's a Unix timestamp — the number of seconds since January 1, 1970. It's how computers store time. It means nothing to a human without converting it.

The Timestamp Converter converts Unix timestamps to readable dates and readable dates back to Unix timestamps — instantly, in both directions.

What Is a Unix Timestamp?

A Unix timestamp (also called an epoch timestamp) is the number of seconds that have elapsed since 00:00:00 UTC on 1 January 1970. It's the universal standard for storing and transmitting time in software systems.

Every major database, API, and programming language uses Unix timestamps internally. They're timezone-independent, easy to compare, and simple to do arithmetic on — which is why developers prefer them over formatted date strings.

The problem is they're completely unreadable to humans without conversion.

How to Use the Timestamp Converter

1. Go to rohansurve.in/free-tools/timestamp-converter
2. Paste your Unix timestamp — in seconds or milliseconds
3. Get the human-readable date and time instantly
4. Or enter a date and get the Unix timestamp back

Works in both directions. Handles both second-precision and millisecond-precision timestamps.

Seconds vs Milliseconds — Which Do You Have?

Unix timestamps come in two common formats:

• Seconds — 10 digits, e.g. 1746789600 — used by most databases, APIs, and server-side languages
• Milliseconds — 13 digits, e.g. 1746789600000 — used by JavaScript's Date.now(), Firebase, and many frontend systems

If your timestamp has 13 digits, it's in milliseconds. The converter handles both automatically.

Where Developers See Timestamps

Database records — created_at, updated_at, deleted_at columns in PostgreSQL, MySQL, and SQLite are often stored as Unix timestamps or ISO strings that include epoch values.

API responses — most REST APIs return timestamps as Unix epoch values in JSON responses.

Firebase and Firestore — Firestore stores timestamps as server timestamps that include epoch values. When debugging Firestore documents, converting these helps you understand exactly when records were created or modified.

JWT tokens — the exp and iat claims in a JWT are Unix timestamps. Converting them tells you exactly when a token was issued and when it expires.

Log files — server and application logs often use Unix timestamps for precise event timing.

Flutter apps — Dart's DateTime class can convert to and from milliseconds since epoch using millisecondsSinceEpoch. When debugging, the converter helps you verify the values quickly.

Current Timestamp — What Time Is It Now?

The converter also shows you the current Unix timestamp in real time — useful when you need to set an expiry time, create a test record with a known timestamp, or verify that a system clock is correct.

Related Developer Tools

• SQL Formatter — format SQL queries that include timestamp columns
• JSON Formatter — read API responses containing timestamps
• Regex Tester — test patterns for matching date and timestamp strings
• Base64 Decoder — decode JWT tokens to read timestamp claims
• UUID Generator — generate unique IDs for database records

All free at rohansurve.in/free-tools.

Convert Any Timestamp in Seconds

The Timestamp Converter is one of those tools every developer needs constantly. Keep it bookmarked — next time you see a 10-digit number in a database or API response, you'll know exactly where to go.