Paste any timestamp or ID and see when it was. Recognises Unix, Windows, Chrome, Apple, Excel and GPS times, and the creation time hidden in social media IDs, UUIDs and database IDs.
Paste one timestamp or ID per line, for example a column from a log or spreadsheet. Each line shows its most likely reading.
Systems count from different starting dates (1601, 1900, 1904, 1970, 2001) and in different units (seconds to nanoseconds), so one number can be valid in several formats. Readings that land on a plausible date are shown first. Where the number came from tells you which one is right: a Chrome history file uses Chrome time, an iPhone database uses Apple time.
Their IDs contain the time. In Discord, turn on Developer Mode and use Copy Message ID; on X, take the number after /status/ in the post address. Paste it here. The table of formats also shows the first possible ID for any date, which helps when searching a platform by time.
A date typed without a time zone, such as “2026-10-21 16:09”, is read in the zone selected above. Add “Z” for UTC or an offset such as “-06:00” to be exact. Around daylight-saving changes some local times happen twice or not at all; the converter warns you when that applies.
Conversions use exact whole-number arithmetic, so precision is kept to the nanosecond. GPS times are corrected for all 18 leap seconds since 1980, and Excel's historical 29 February 1900 error is handled. Instagram IDs use the method published in Instagram's engineering blog, which investigators widely rely on but Instagram has not confirmed for every ID type.