Calculadora de Unix/Epoch

Converte timestamp Unix (segundos desde 1970-01-01 UTC) em data (offset UTC).
Created by
Renato Passos, Eng. de Software
Reviewed by
Renato Passos, Eng. de Software

Last updated: Apr 18, 2026

Data (ISO)
2023-11-14 22:13:20 UTC
Milissegundos
1.700.000.000.000,00

Formula

data = epoch + segundos

About this calculator

The Unix/Epoch Calculator converts Unix timestamps (number of seconds since January 1, 1970, 00:00:00 UTC) into readable dates, considering the UTC offset. It is useful for developers, system analysts, and anyone working with temporal data in Unix systems, logs, or databases. The formula is simple: date = epoch + seconds. The result shows day, month, year, hour, minute, and second in UTC timezone.

You can use this calculator to debug event logs, interpret timestamps from APIs, or convert dates stored in systems that use the Unix standard. For example, when analyzing web server logs, many records come in epoch; with the calculator you get the exact date of the occurrence. It is also helpful for programmers who need to verify conversions in different languages.

Important caveats: the Unix timestamp is usually represented in seconds, but some systems use milliseconds. Check if the entered value is in seconds (10 digits) or milliseconds (13 digits). The calculator assumes seconds; if you enter milliseconds, the result will be an incorrect future date. Also, the timestamp is always UTC; to convert to your local time zone, you need to apply the offset manually.

Frequently asked questions

What is the Unix epoch?

It is the base date January 1, 1970, 00:00:00 UTC, from which Unix timestamps count the seconds.

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

Timestamps in seconds have 10 digits (e.g., 1609459200). In milliseconds they have 13 digits (e.g., 1609459200000).

Does the calculator consider time zones?

No, it always returns the date in UTC. To get local time, you must add or subtract your time zone offset.

Can I convert a date to a Unix timestamp?

No, this calculator only converts timestamp to date. For the reverse, you need another tool.

What happens if I enter a negative timestamp?

Negative timestamps represent dates before 1970. The calculator still works, as epoch is 0, and negative values go back in time.

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