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Free Unix Timestamp Converter

Convert Unix Epoch time to human-readable dates and vice versa. Includes a live Epoch clock. Essential tool for developers working with timestamps, APIs, and databases.

Last Updated: 15 Jan 2026

Current Unix Epoch

Seconds since Jan 01 1970 (UTC)

123Timestamp to Date

Enter Timestamp (s or ms)

Date to Timestamp

Select Date & Time

Understanding Unix Time and Epoch Timestamps

Unix time (also known as Epoch time or POSIX time) is a system for describing a point in time. It is the number of seconds that have elapsed since the Unix Epoch, minus leap seconds. The Unix Epoch is 00:00:00 UTC on 1 January 1970.

This system was chosen because it provides a simple, standardized way to represent time that works across different systems, programming languages, and databases. It eliminates timezone confusion by storing everything in UTC.

Why Developers Use Unix Timestamps

Simple Calculations: Easy to add/subtract seconds, minutes, hours, or days
Timezone Independent: Stored in UTC, converted to local time when displayed
Universal Support: Supported by all major programming languages and databases
Efficient Storage: Single number instead of complex date structures
Easy Comparison: Can directly compare two timestamps numerically

Common Use Cases

API Development: Timestamps in JSON responses
Database Storage: Storing creation/modification times
Logging Systems: Timestamping log entries
Caching: Expiration times and cache keys
Scheduling: Cron jobs and task scheduling

Important Unix Timestamp Milestones

Unix Epoch Start0

January 1, 1970, 00:00:00 UTC

1 Billion Seconds1,000,000,000

September 9, 2001

2 Billion Seconds2,000,000,000

May 18, 2033

32-bit Integer Max (Year 2038 Problem)2,147,483,647

January 19, 2038, 03:14:07 UTC

The Year 2038 Problem Explained

On January 19, 2038, 32-bit systems will run out of numbers to represent seconds (reaching 2,147,483,647, the maximum value for a signed 32-bit integer). This will cause timestamps to overflow and wrap around to negative numbers, potentially causing system failures.

Modern 64-bit systems have already solved this by being able to store vastly larger numbers. A 64-bit signed integer can represent timestamps up to the year 292,277,026,596, far beyond any practical concern. Most modern systems and programming languages use 64-bit timestamps by default.

Timestamp Format Examples

Unix Timestamp

1704067200

Seconds since epoch

ISO 8601 Format

2024-01-01T00:00:00Z

Human-readable standard format

RFC 2822 Format

Mon, 01 Jan 2024 00:00:00 GMT

Email and HTTP header format

Frequently Asked Questions

What is a Unix timestamp?

A Unix timestamp (also called Epoch time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. It's a standard way computers store and calculate dates and times as a single number, making it easy to perform date arithmetic and comparisons.

How do I convert a timestamp to a date?

Enter the Unix timestamp (number of seconds since epoch) into the converter, and it will instantly display the corresponding human-readable date and time in multiple formats including UTC, local time, ISO 8601 format, and various other common formats.

How do I convert a date to a timestamp?

Select a date and time using the date picker, and the converter will instantly show the corresponding Unix timestamp. You can also enter a date manually in various formats (YYYY-MM-DD, MM/DD/YYYY, etc.) and get the timestamp.

What is the Year 2038 problem?

On January 19, 2038, 32-bit systems will run out of numbers to represent seconds (reaching 2,147,483,647, the maximum value for a signed 32-bit integer). Modern 64-bit systems have solved this by supporting much larger numbers. Our converter handles both 32-bit and 64-bit timestamps.

Why do developers use Unix timestamps?

Unix timestamps are widely used because they're simple, standardized, and make date calculations easy. They're timezone-independent (stored in UTC), easy to compare, and supported by virtually all programming languages and databases. They're essential for APIs, databases, and logging systems.

Is this timestamp converter accurate?

Yes, our Unix timestamp converter uses precise conversion algorithms and accounts for leap seconds, timezones, and daylight saving time. All conversions are accurate and follow the POSIX standard for Unix time calculation.