How do I convert a timestamp to a date?

Enter your Unix timestamp (seconds or milliseconds since January 1, 1970) into the converter and click convert. The tool automatically detects whether your timestamp is in seconds or milliseconds and displays the human-readable date.

How do I know if my timestamp is in seconds or milliseconds?

Timestamps with 10 digits are in seconds (e.g., 1609459200). Timestamps with 13 digits are in milliseconds (e.g., 1609459200000). Our tool automatically detects the format.

Can I convert dates back to timestamps?

Yes! This tool supports bidirectional conversion. Use the date picker to select a date and time, and the tool will generate the corresponding Unix timestamp in both seconds and milliseconds.

Timestamp to Date Converter - Unix Timestamp to Human Readable Date

Timestamp → Date

Date → Timestamp

Convert Timestamp to Date

📌 Try these examples:

TIMESTAMP

📅 UTC DATE & TIME

🌍 LOCAL DATE & TIME

📋 ISO 8601 FORMAT

⏱️ SECONDS

⏱️ MILLISECONDS

Convert Date to Timestamp

SELECTED DATE

⏱️ UNIX TIMESTAMP (SECONDS)

⏱️ UNIX TIMESTAMP (MILLISECONDS)

What is a Unix Timestamp?

A Unix timestamp (also known as Epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. This date is called the Unix epoch.

Timestamp Formats

Seconds (10 digits): 1609459200 = January 1, 2021, 00:00:00 UTC

Milliseconds (13 digits): 1609459200000 = January 1, 2021, 00:00:00.000 UTC

Our tool automatically detects which format you're using based on the number of digits.

Convert Timestamps in Code

JavaScript

// JavaScript
// Timestamp to Date
const timestamp = 1609459200;
const date = new Date(timestamp * 1000); // Convert to milliseconds
console.log(date.toUTCString()); // Fri, 01 Jan 2021 00:00:00 GMT

// Date to Timestamp
const now = new Date();
const timestampSeconds = Math.floor(now.getTime() / 1000);
const timestampMilliseconds = now.getTime();
console.log('Seconds:', timestampSeconds);
console.log('Milliseconds:', timestampMilliseconds);

Python

# Python
from datetime import datetime

# Timestamp to Date
timestamp = 1609459200
date = datetime.fromtimestamp(timestamp)
print(date.isoformat())  # 2021-01-01T00:00:00

# Date to Timestamp
now = datetime.now()
timestamp_seconds = int(now.timestamp())
timestamp_milliseconds = int(now.timestamp() * 1000)
print(f'Seconds: {timestamp_seconds}')
print(f'Milliseconds: {timestamp_milliseconds}')

Common Use Cases

API Development: Convert timestamps from API responses to readable dates
Database Queries: Work with timestamp-based data in databases
Log Analysis: Convert server log timestamps to human-readable format
Data Migration: Transform date formats during data transfers
Debugging: Verify timestamp calculations in your code

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⏰ Timestamp to Date Converter