Date, time & timestamp tools
An API returns a Unix timestamp you need in a readable date, a log file uses a Windows FILETIME or .NET ticks value nobody remembers how to decode, or a meeting needs to work across three time zones — timestamps come from many systems, each with its own epoch and unit. These tools convert between timestamp formats, calculate dates and durations, and extract the embedded timestamp inside a UUID, Snowflake ID or MongoDB ObjectId.
Unix timestamp converter and ISO 8601 / RFC date parser handle the common cases, including batch conversion and exact offset handling. For the less common epochs, .NET ticks converter, FILETIME converter, Excel serial date converter and WebKit timestamp converter each decode one specific system's format with its native precision, from 100-nanosecond ticks to Chrome's microsecond values. Date calculator makes its day-counting rules explicit, which matters for workday and anniversary math.
13 tools
Convert dates and timestamps
Calculate durations and dates
Decode platform-specific epochs
-
.NET ticks converter
Decode .NET DateTime.Ticks with 100 nanosecond precision preservation
-
Excel serial date converter
Convert Excel serial dates to UTC dates with workbook system selection
-
FILETIME converter
Read Windows FILETIME and LDAP timestamps with 100 nanosecond accuracy
-
WebKit timestamp converter
Decode Chrome database microsecond timestamps to UTC dates
Date & Timestamps tools FAQ
Unix timestamp converter accepts seconds, milliseconds or other units and converts to a date in the time zone you choose, rather than assuming UTC or your local zone. For comparing the same moment across several zones side by side, use Time zone converter instead.
Both are epoch-based timestamps with much finer precision than Unix time — .NET ticks count 100-nanosecond intervals since year 1, and FILETIME does the same since 1601, also used by LDAP. .NET ticks converter and FILETIME converter decode each to a standard date without losing that sub-second precision.
Date calculator counts workdays, full intervals or anniversaries with its day-counting rule stated explicitly, since conventions differ on whether to include the start date, the end date, or public holidays. Check which rule it's using before relying on the result for a deadline.