Work with dates and times using our free browser-based tools. Convert timestamps, calculate ages, find date differences, and generate cron expressions — all without uploading anything to a server.
Date and time manipulation is a constant need for developers, data analysts, and system administrators. Whether you are converting Unix timestamps from API responses, calculating age from birthdates for compliance checks, finding the number of days between two events, or building cron expressions for scheduled tasks — these tools handle the most common date/time operations quickly and accurately.
All conversions happen in your browser using JavaScript's built-in Date API. Your date values and timestamps are never sent to any server. No sign-up, no usage limits, no data collection.
Convert between Unix epoch timestamps and human-readable dates instantly.
Calculate your exact age in years, months, and days from any birthdate.
Find the exact number of days, weeks, or months between any two dates.
Build cron expressions visually with a point-and-click interface.
All calculations run locally — your timestamps and date data stay private
Automatic timezone detection — results shown in your local timezone
Handles both seconds and milliseconds timestamps automatically
Free forever with no sign-up or usage limits
Developers frequently encounter date/time challenges: parsing timestamps from REST APIs and databases, converting between timezones, calculating age for identity verification, finding business days between dates, and setting up cron schedules for background jobs. These tools address each of these scenarios with focused, easy-to-use interfaces.
The Unix timestamp converter handles the most common scenario — converting the integer timestamps found in JSON API responses and database records into human-readable dates. The cron expression generator eliminates the need to memorize cron syntax by letting you build expressions visually and see the resulting schedule in plain English.
A Unix timestamp is the number of seconds that have elapsed since January 1, 1970 (the Unix epoch). It's widely used in databases, APIs, and log files to represent dates as a single integer value.
Paste your Unix timestamp into the converter tool. It will show the corresponding date and time in UTC, plus your local timezone. Timestamps in milliseconds (13 digits) are automatically detected.
A cron expression is a string of five or six fields that defines a schedule in Unix-like systems. For example, '0 9 * * 1-5' means 'at 9:00 AM, Monday through Friday'. Our generator builds these expressions visually.