Date to LDAP Timestamp Converter
Convert calendar dates to Windows LDAP/Active Directory timestamps (100-ns intervals since 1601) with UTC and local time support.
LDAP and FILETIME timestamps
Active Directory and many Windows APIs store time as a 100-nanosecond count since 1 January 1601 UTC.
Administrators often need that integer when comparing whenChanged attributes, scripting AD queries, or correlating logs.
To decode LDAP integers back to dates, use the LDAP Timestamp to Date Converter. For general Unix epoch work, use the Epoch Unix Timestamp Converter or the Date Formatter for readable output in many locales.
Frequently Asked Questions
Should I pick local time or UTC?
Choose the same interpretation you use in your directory or script. UTC avoids daylight-saving surprises when you share values across regions.
Is LDAP timestamp the same as Windows FILETIME?
Yes. Both refer to the 100-nanosecond intervals since the Windows epoch (1601-01-01 UTC).
Why is the number so large?
The value counts 100-nanosecond ticks across more than four centuries, so modern dates produce 18-digit integers.
Related Tools
McWorter Dendrite Fractal
Lattice Multiplication Calculator
Nickname Generator
Ideal Gas Law Calculator
Child BMI Percentile Calculator
Colorado Paycheck Calculator
Add CSV Quotes
Center of Mass Calculator
CSV to YAML Converter
Natural Rate of Unemployment Calculator
Bath vs Shower Footprint
Age Calculator
CSV Group By Aggregate
AP Bio Score Calculator
HKDF Key Derivation
Hyperfocal Distance Calculator
Content Security Policy Generator
Pug to HTML Converter
Lord of the Rings Name Generator
Radiocarbon Dating Calculator