Developer & Technical
Convert Unix Epoch, ISO 8601 strings, Crontab expressions, and network latencies.
Unix Timestamp Converter
Convert Unix Epoch time to human-readable format and vice-versa instantly.
Epoch Converter
Convert Linux epoch seconds and milliseconds to UTC standard strings.
ISO 8601 Date Generator
Generate and format strict ISO-8601 datestring standards required by most APIs.
RFC 3339 Date stringifier
Translate normal dates into the strict RFC 3339 internet profile format.
Crontab Expression Generator
Build, parse, and explain cron schedule expressions safely.
Cron Job Scheduler Sandbox
Test your cron schedules to see the next 5 exact execution times.
Database Timestamp Formatter
Format dates precisely for MySQL, PostgreSQL, and SQLite ingestion.
Excel Date to Numeric Converter
Translate strange 5-digit Excel date serial numbers into real readable dates.
Mac Absolute Time Converter
Convert Apple's Core Data absolute time (seconds since 2001) to standard UTC.
LDAP / Active Directory Time Converter
Convert 18-digit AD timestamps (100-nanoseconds since 1601) into human dates.
Windows FILETIME Converter
Translate low-level Win32 API FILETIME structures into readable diagnostics.
AWS CloudWatch Time Formatter
Format timestamps exactly as required by AWS CloudWatch Logs querying.
GraphQL DateTime Formatter
Format strings that cleanly pass strict GraphQL DateTime scalar validations.
JSON Date Stringifier
Safely stringify and deserialize JavaScript dates for JSON payloads.
Base64 Timestamp Encoder
Obfuscate timestamps into Base64 for cursors and stateless pagination.
Hexadecimal Timestamp Converter
Convert raw hexadecimal epoch timestamps often found in hardware memory dumps.
MongoDB ObjectID Timestamp Extractor
Extract the exact creation date hidden inside a MongoDB ObjectId string.
Snowflake ID Timestamp Extractor
Pull the original creation timestamp embedded inside a Twitter/Discord Snowflake ID.
JWT Expiry Validator
Decode a JSON Web Token and calculate exactly when its `exp` claim will invalidate.
OAuth Token Lifetime Calculator
Calculate refresh token and access token lifespans based on issued `expires_in` seconds.
SSL Certificate Expiry Checker
Ping a domain and calculate the exact time remaining until its SSL certificate expires.
Domain Name Expiry Checker
Check the WHOIS database to calculate the exact expiration time of a web domain.
Cookie Max-Age Calculator
Generate the exact `Expires=` or `Max-Age=` syntax for setting HTTP browser cookies.
Cache-Control Header Generator
Calculate the exact seconds for `max-age`, `s-maxage`, and `stale-while-revalidate` directives.
Ping Latency to Milliseconds
Convert network ping durations and evaluate if they represent good real-time latency.
Server Uptime Calculator (99.99%)
Calculate exactly how much downtime is permitted annually for 99%, 99.9%, and 99.99% SLAs.
Downtime Calculator
Input outage Start/End to calculate total downtime and the resulting percentage drop.
Hertz to Seconds Converter
Convert Hz frequency (cycles per second) into exact time durations (period length).
BPM to Milliseconds Calculator
Translate musical tempo (Beats Per Minute) into exact milliseconds for audio delays or animation timing.
Video Frame Rate to Time
Calculate the exact duration of a specific group of frames rendered at 24fps, 30fps, or 60fps.