Convert Unix timestamps to dates and back
The MailDrop timestamp converter translates Unix timestamps into human-readable dates and converts calendar dates back into timestamps, instantly in your browser. Paste a number like 1753142400 and see the exact date and time it represents, or pick a date and get the corresponding Unix time. The page also displays a live, continuously updating current timestamp, handy whenever you need the value for right now.
Unix timestamps count the seconds elapsed since January 1, 1970 UTC, and they are the standard way databases, APIs, log files, and programming languages record moments in time. That makes them precise and unambiguous, but unreadable to humans. Converting in both directions is a daily chore for anyone debugging logs, inspecting API responses, checking token expiry times, or writing queries against time-based data.
The converter automatically detects whether a value is in seconds or milliseconds, so timestamps copied from JavaScript, Java, or database exports convert correctly without manual adjustment. It is free, needs no registration, and runs alongside MailDrop temporary email in a toolkit made for developers and testers.
Enter a timestamp copied from a log file, an API response, a database row, or a JWT claim. The tool accepts both 10-digit second values and 13-digit millisecond values and detects which one you provided automatically.
The tool displays the human-readable date and time that the timestamp represents, so you can immediately tell when an event happened, when a token expires, or whether a record's time field is sane.
Working in the other direction, enter a calendar date and time and the tool produces the matching Unix timestamp, ready to drop into a query, a test fixture, an API request, or a configuration value.
A live current Unix timestamp updates continuously on the page. Copy it whenever you need the present moment as a number, such as when setting expiry fields or timestamping a test record.
A Unix timestamp is the number of seconds that have elapsed since midnight UTC on January 1, 1970, a reference point called the epoch. It is a compact, timezone-independent way to represent a moment in time, which is why operating systems, databases, APIs, and programming languages use it almost universally under the hood.
By magnitude. Timestamps in seconds are currently 10 digits long, while millisecond values, common in JavaScript and Java, are 13 digits. The converter checks the size of the number and interprets it accordingly, so you get a sensible date either way instead of a result thousands of years off.
A Unix timestamp itself has no timezone; it identifies one absolute instant worldwide. Any offset you notice comes from the timezone used to display the result. When comparing against a log or server record, check which zone that system reports in, since the same timestamp renders as different local wall-clock times.
Systems that store timestamps as signed 32-bit integers overflow on January 19, 2038, when the count of seconds exceeds the largest value the type can hold. Modern software uses 64-bit values, which postpone the limit by billions of years, but the issue still lurks in old embedded systems and legacy file formats.
Email testing constantly involves timestamps: verification links that expire, message headers with sent times, and logs that record delivery in Unix time. When you run mail flows through a MailDrop disposable email inbox, this converter lets you check expiry claims and header times quickly, without exposing a personal address to test systems.