Are timestamps in Seconds or Milliseconds?
Both! Standard Unix (PHP, Python, Ruby, C) typically uses 10-digit seconds. Java and JavaScript native Dates use 13-digit milliseconds. Our tool automatically detects which magnitude you pasted.
Timestamp to Date Converter instantly translates machine-readable Unix timestamps (Epoch time) into standard, human-readable UTC/GMT date and time strings. Whether you are debugging JSON API responses, analyzing raw server logs, or verifying database records (like MySQL or PostgreSQL integer columns), this tool eliminates guesswork by mathematically calculating the exact calendar date.
The Unix Epoch is defined as precisely January 1, 1970 00:00:00 UTC. A Unix timestamp simply represents the number of seconds that have elapsed since that moment (ignoring leap seconds). This calculator multiplies/divides your input as necessary and utilizes JavaScript's native `Date(UTC)` object to traverse the calendar and extract the exact year, month, day, and time.
Both! Standard Unix (PHP, Python, Ruby, C) typically uses 10-digit seconds. Java and JavaScript native Dates use 13-digit milliseconds. Our tool automatically detects which magnitude you pasted.
This specific tool explicitly outputs globally standard UTC/GMT. If you need the time in your local computer's timezone (e.g., EST or PST), use our "Timestamp to Local Date" tool instead.
No. The POSIX standard for Unix Time strictly ignores leap seconds. Every day is treated as exactly 86,400 seconds regardless of Earth's actual rotation anomalies.
On January 19, 2038, the 32-bit integer representing seconds since 1970 will overflow (exceed 2.14 billion), causing legacy systems to wrap around to the year 1901. Modern 64-bit systems are unaffected.
Absolutely. The time conversion is simple math executed entirely within your web browser. No network requests are made.
Yes, it is entirely free to use.
Tool workspace
Free Unix timestamp to UTC date converter online — instantly translate epoch seconds or milliseconds into human-readable UTC/GMT formats. Perfect for backend developers. No login.
Input
1704067200
Output
January 1, 2024 at 12:00:00 AM UTC