Date/Time Formatter
Convert timestamps, format dates, and transform between Unix, ISO 8601, and custom date formats
Input
Timestamp, ISO date, or date stringAll Formats
Tips
- Enter a Unix timestamp (seconds), ISO 8601 date, or any parseable date string
- Numeric input is treated as Unix timestamp in seconds (e.g.
1705312200) - Strings containing "T" or "-" are parsed as date strings (e.g.
2024-01-15T10:30:00Z) - Click "Now" to quickly insert the current Unix timestamp
Professional Date/Time Formatter Processing Features
Everything you need to work with Date/Time Formatter data efficiently and professionally
Format Detection
Automatically detect whether input is a Unix timestamp, ISO date, or custom format for instant conversion.
Multi-Format Output
See your date in all common formats simultaneously: ISO 8601, Unix timestamp, RFC 2822, and relative time.
Timezone Support
Display converted times in both UTC and local timezone for cross-timezone coordination.
Current Timestamp
Quickly get the current Unix timestamp with one click — useful for API testing and debugging.
Instant Conversion
Convert between formats instantly with native browser Date APIs — no server round-trips.
Professional Interface
Clean interface with clear format labels and one-click copy for any output format.
How It Works
Simple steps to process your Date/Time Formatter like a pro
Enter Date/Time
Paste a Unix timestamp, ISO date, or any date string. Or click "Now" for current time.
Auto-Detect
The tool automatically detects the input format and converts it.
Review Results
See your date/time in all supported formats: Unix, ISO, RFC, relative time, and more.
Copy Result
Copy any format to your clipboard with a single click.
Professional Date/Time Formatter Formatter & Validator
Date/Time Formatter processing runs entirely in your browser — no uploads, no accounts, no limits.
Processing method
Use this tool’s examples, syntax limits and source documentation to understand its output.
Key Technical Features:
- • ISO 8601 compliant date/time formatting
- • Unix epoch timestamp conversion (seconds and milliseconds)
- • Automatic format detection for common date formats
- • Client-side processing for maximum security and speed
- • Timezone-aware conversions with UTC and local time
Processing and output
Check the stated processing method and compare the result with your input before using it.
Security & Privacy:
- • 100% client-side processing - data never sent to servers
- • No tracking, cookies or data collection
- • HTTPS encryption for secure connections
- • No data stored or cached after processing
- • GDPR and CCPA compliant approach
Why Professionals Choose EZ Formatter
Your data stays in your browser
Frequently Asked Questions
Common questions about Datetime Formatter formatting answered
Yes, our date/time formatter is completely free with no registration required. All processing happens in your browser.
We support Unix timestamps (seconds and milliseconds), ISO 8601, RFC 2822, and custom date formats. The tool auto-detects the input format.
Yes. The output shows both UTC and your local timezone for every conversion. You can see the exact time in different zones.
A Unix timestamp is the number of seconds elapsed since January 1, 1970 00:00:00 UTC. It is widely used in programming and APIs.
Yes. The output includes relative time descriptions like "2 hours ago" or "in 3 days" for easy human reference.
Unix seconds and milliseconds (auto-detected by magnitude - 10 digits is seconds, 13 is milliseconds), ISO 8601 (RFC 3339 profile: 2026-01-15T10:30:00Z, with offsets and fractional seconds), RFC 2822 (email headers: Fri, 15 Jan 2026 10:30:00 +0000), and a selection of common national formats. Output renders both UTC and your local timezone.
Unix creators picked 1970-01-01T00:00:00 UTC as a round origin for the system clock (documented in early Unix manuals; POSIX codified it). Every Unix timestamp is seconds since that instant - and the 32-bit signed representation overflows on 2038-01-19 (the Y2038 problem), while 64-bit systems are safe for ~292 billion years.
Conversions use the browser's IANA timezone database (the same tzdata operating systems ship) - abbreviations like EST are ambiguous (US, Australian, and Cuban EST differ) so they resolve through explicit offsets in the input or your local zone. DST transitions are computed from tzdata rules, not fixed offsets.
Authoritative References
Standards and official documentation that define the formats this tool works with.