Unix Timestamp Converter

Convert between Unix timestamps (seconds since January 1, 1970) and human-readable dates with this simple tool. Essential for developers working with system logs, databases, and time-based operations.

Unix Timestamp Converter

Current Unix Timestamp: 0

Unix Timestamp (seconds):

Number of seconds since January 1, 1970 (UTC).

Human-readable Date (ISO):

The date in ISO format: YYYY-MM-DDTHH:MM:SS.sssZ

Typical Use Cases

Converting server log timestamps to readable dates
Debugging timestamps in APIs and databases
Working with timestamp data in programming
Validating time-based operations in development
Managing expiration dates and time-to-live values
Calculating differences between timestamps

Formula

Unix Timestamp: Number of seconds elapsed since January 1, 1970, at 00:00:00 UTC (the Unix Epoch)
Human Date: Calendar date and time representation in year, month, day, hour, minute, and second format
Conversion: JavaScript uses milliseconds for Date objects, so conversion requires multiplying/dividing by 1000

Common Timestamp Formats

Unix Timestamp (seconds)1714627146
Standard Unix format in seconds
Unix Timestamp (milliseconds)1714627146000
Used by JavaScript Date and many modern APIs
ISO 86012024-05-02T10:25:46Z
International standard for date/time representation

Code Examples

JavaScript

// Current timestamp (in seconds)
const timestampInSeconds = Math.floor(Date.now() / 1000);

// Convert timestamp to date
const date = new Date(timestampInSeconds * 1000);

// Convert date to timestamp
const timestamp = Math.floor(date.getTime() / 1000);

Python

import time
import datetime

# Current timestamp (in seconds)
timestamp = int(time.time())

# Convert timestamp to date
date = datetime.datetime.fromtimestamp(timestamp)

# Convert date to timestamp
timestamp = int(date.timestamp())

Important Notes About Unix Timestamps

Technical Considerations

Time Zones: Unix timestamps are always in UTC, independent of time zones
Y2K38 Problem: 32-bit signed integer timestamps will overflow on January 19, 2038
Leap Seconds: Unix time doesn't account for leap seconds, as it assumes exactly 86,400 seconds per day
Precision: Standard Unix timestamps have 1-second precision; millisecond variants offer greater precision

Common Milestones

0: January 1, 1970, 00:00:00 UTC (Unix Epoch)
1000000000: September 9, 2001 (One billion seconds)
1500000000: July 14, 2017
2000000000: May 18, 2033
2147483647: January 19, 2038 (32-bit signed integer limit)