What is Unix Time?
Unix Epoch time (or POSIX time) is a system for describing a point in time. It is defined as the number of seconds that have elapsed since January 1, 1970 (UTC), not counting leap seconds.
Many systems use milliseconds instead of seconds (where the number is simply multiplied by 1000). JavaScript, for example, natively uses millisecond-precision Epoch timestamps.
Why do computers use Epoch?
Storing dates as human-readable strings (like 2026-10-06 14:30:00 PST) is extremely difficult for databases to handle due to varying formats, time zones, and daylight saving rules.
Storing a single integer (e.g. 1791209301) makes it incredibly fast and simple for servers to sort chronologically, compare two dates, or calculate durations mathematically without any locale ambiguities.
100% Local Conversions
Your data is private. OmniTools operates on a strict "Zero Server Upload" architecture. When you convert dates in this tool, the mathematical translations happen instantly within your web browser's memory using local JavaScript.
Your dates, logs, and server timestamps are never transmitted to a backend API, ensuring complete privacy.