Date Formatter
Convert and format dates between Unix timestamps, ISO strings, and custom formats with comprehensive timezone support and real-time validation
Input Date
Current Time
Format Options
YYYY-MM-DDTHH:mm:ss.sssZFormatted Output
Formatted date will appear here
Enter a date and select format options to see the result
Format Tokens Reference
About Date Formatting
Supported Inputs:
- Unix timestamps (seconds/milliseconds)
- ISO 8601 strings
- Date strings (any valid format)
- "now" for current time
Common Use Cases:
- API development
- Database operations
- Internationalization
- Logging and debugging
Features:
- Multiple timezone support
- Custom format tokens
- Real-time validation
- Relative time formatting
Date Formatter Tool – Comprehensive Date Conversion and Formatting
The Date Formatter Tool provides a complete solution for converting and formatting dates across different systems and standards. Whether you're working with Unix timestamps, ISO 8601 strings, or need custom date formats for your application, this tool offers robust formatting capabilities with timezone support and real-time validation.
Key Features
- Multiple Input Formats — Support for Unix timestamps, ISO strings, date strings, and "now" keyword
- Comprehensive Formatting — Preset formats and custom token-based formatting
- Timezone Support — Format dates in UTC, local time, or any specific timezone
- Real-time Validation — Automatic detection and validation of input dates
- Relative Time Formatting — Human-readable relative times ("2 hours ago")
- Custom Format Tokens — Flexible token system for precise format control
- Quick Examples — Pre-loaded examples for common date formats
- Copy & Export — Easy copying of formatted results
Supported Input Types
The tool understands and automatically detects various date input formats:
- Unix Timestamps — 10-digit (seconds) or 13-digit (milliseconds) numbers
- ISO 8601 Strings — Standardized format (YYYY-MM-DDTHH:mm:ss.sssZ)
- Date Strings — Any JavaScript-parsable date string
- Special Keywords — "now" for current date and time
- Locale Formats — Various regional date representations
Common Format Presets
| Format Name | Pattern | Example Output | Use Case |
|---|---|---|---|
| ISO 8601 | YYYY-MM-DDTHH:mm:ss.sssZ | 2024-01-01T12:00:00.000Z | APIs, databases, data exchange |
| US Date | MM/DD/YYYY | 01/01/2024 | US-based applications |
| European Date | DD/MM/YYYY | 01/01/2024 | European applications |
| Full Date | MMMM DD, YYYY | January 1, 2024 | User-friendly displays |
| Date & Time | MM/DD/YYYY HH:mm:ss | 01/01/2024 12:00:00 | Logs, detailed timestamps |
| Relative Time | relative | 2 hours ago | Social media, recent activity |
| Unix Timestamp | timestamp | 1704067200 | System timestamps, APIs |
Format Tokens Reference
| Category | Token | Description | Example |
|---|---|---|---|
| Year | YYYY | 4-digit year | 2024 |
YY | 2-digit year | 24 | |
| Month Tokens | |||
| Month | MMMM | Full month name | January |
MMM | Short month name | Jan | |
MM | 2-digit month | 01 | |
M | Month number | 1 | |
| Day | DD | 2-digit day | 01 |
D | Day number | 1 | |
dddd | Full weekday | Monday | |
ddd | Short weekday | Mon | |
Do | Ordinal day | 1st, 2nd, 3rd | |
| Time | HH | 24-hour (00-23) | 14 |
hh | 12-hour (01-12) | 02 | |
mm | Minutes | 05 | |
ss | Seconds | 30 | |
Common Use Cases
- API Development — Format dates for REST API requests and responses
- Database Operations — Convert between database timestamp formats
- International Applications — Handle dates across different timezones
- User Interfaces — Display dates in user-friendly formats
- Logging Systems — Generate consistent timestamps for application logs
- Data Migration — Convert date formats when moving between systems
- Debugging — Understand and troubleshoot date-related issues
- Learning — Experiment with different date formats and timezones
Timezone Handling
The tool provides comprehensive timezone support, allowing you to format dates in:
- Local Time — Your browser's current timezone
- UTC — Coordinated Universal Time (standard for systems)
- Specific Offsets — Any UTC offset from -12 to +12 hours
- Major Timezones — Common timezones like PST, EST, GMT, etc.
Best Practices
- Storage — Always store dates as UTC or Unix timestamps
- Display — Convert to user's local timezone for display
- APIs — Use ISO 8601 format for maximum compatibility
- Validation — Always validate date inputs before processing
- Consistency — Use consistent date formats throughout your application
Performance & Compatibility
- Client-Side Processing — All formatting happens in your browser
- Real-time Results — Instant formatting without server calls
- Browser Compatibility — Works in all modern browsers
- Mobile Friendly — Responsive design works on all devices
Frequently Asked Questions (FAQs)
The tool supports Unix timestamps (in seconds or milliseconds), ISO 8601 strings (2024-01-01T12:00:00Z), common date strings (January 1, 2024), various locale formats, and special keyword 'now' for current time. It automatically detects the input format.
Unix timestamp in seconds is a 10-digit number (like 1704067200), while milliseconds is a 13-digit number (like 1704067200000). The tool automatically detects which format you're using. Most systems use seconds, but JavaScript Date uses milliseconds internally.
You can format dates in different timezones including UTC, your local time, or any specific UTC offset. The tool converts the input date to your selected timezone before applying the format. This is useful for displaying dates for users in different regions.
Format tokens are special codes that represent date components. For example: YYYY for 4-digit year, MM for 2-digit month, DD for 2-digit day, HH for 24-hour, etc. Use them in custom formats like 'YYYY-MM-DD HH:mm:ss' to create exactly the output format you need.
Yes! Use the 'Relative Time' preset to format dates as human-readable relative times. This is perfect for social media apps, chat applications, or any interface where you want to show how long ago something happened in a user-friendly way.
ISO 8601 (YYYY-MM-DDTHH:mm:ss.sssZ) is an international standard for date formatting. It's ideal for APIs, databases, and data exchange between systems because it's unambiguous and sorts correctly. Always use ISO format when storing or transmitting dates.
While this tool focuses on standard formats, you can create locale-specific formats using custom tokens. For example, European dates use 'DD/MM/YYYY' while US dates use 'MM/DD/YYYY'. The tool doesn't automatically localize month/day names but provides tokens for custom formatting.
Common uses include: preparing dates for APIs/databases, formatting user-facing dates in web applications, converting between different date systems, debugging date-related issues, generating timestamps for logs, and learning about date formatting patterns.
