Log Timestamp Parser & Sorter – ISO-8601, Unix Epoch, RFC 2822
What Does This Tool Do?
Working with logs from different systems can be a headache when each one uses a different timestamp format. This tool takes the pain out of log analysis by automatically recognizing various timestamp formats, letting you sort entries chronologically, and converting everything to your preferred format.
Whether you're debugging a distributed system, analyzing server logs, or just trying to make sense of timestamps from multiple sources, this converter handles the heavy lifting so you can focus on what the logs actually tell you.
Key Features
- Smart Format Detection: The tool automatically figures out what timestamp format each line uses - no need to specify it manually
- Multiple Format Support: Handles ISO-8601, Unix timestamps (seconds and milliseconds), RFC 2822, and common log formats out of the box
- Flexible Sorting: Arrange your logs from oldest to newest or newest to oldest with a single click
- Batch Conversion: Transform all timestamps to a consistent format - great for comparing logs from different sources
- Custom Patterns: Use regex for input matching and strftime patterns for output formatting when you need something specific
- Preserves Context: Everything around your timestamps stays intact - log levels, messages, metadata all remain in place
Supported Timestamp Formats
ISO-8601
2024-01-15T10:30:00Z
2024-01-15T10:30:00.123Z (with milliseconds)
The international standard - unambiguous and widely used in APIs and modern systems
Unix Timestamps
1705312200 (seconds since epoch)
1705312200000 (milliseconds since epoch)
Compact numeric format - common in databases, APIs, and system internals
RFC 2822
Mon, 15 Jan 2024 10:30:00 +0000
Human-readable format used in email headers and HTTP
Common Log Format
2024-01-15 10:30:00
Simple and readable - often seen in application logs
Common Use Cases
Debugging Distributed Systems
When tracking down issues across microservices, each service might log timestamps differently. Paste logs from multiple sources, let the tool detect formats automatically, and sort everything chronologically to see the actual sequence of events.
Log Aggregation Prep
Before feeding logs into analysis tools like Elasticsearch or Splunk, normalize all timestamps to a consistent format. This ensures proper parsing and makes time-based queries work correctly.
API Response Analysis
Convert Unix timestamps from API responses to human-readable formats for documentation or debugging. No more mental math converting epoch times.
Report Generation
When creating incident reports or audit logs, convert technical timestamps to a consistent, readable format that non-technical stakeholders can understand.
Quick Start Guide
- Paste your logs into the input area. Each line should contain at least one timestamp.
- Check the detection results to see which formats were found and if any lines couldn't be parsed.
- Choose your output format from the dropdown - ISO-8601 is a safe default for most use cases.
- Apply sorting if you need logs in chronological order.
- Click the output area to copy the converted logs to your clipboard.
Advanced: Custom Formats
For non-standard timestamp formats, you can specify custom patterns:
Input (Regex Pattern)
Use regular expressions to match your timestamp. The first capture group will be used as the timestamp string.
\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2} matches 2024/01/15 10:30:00
Output (strftime Pattern)
Use strftime specifiers to format the output exactly how you need it.
%Y-%m-%d %H:%M:%S produces 2024-01-15 10:30:00
%d/%m/%Y %I:%M %p produces 15/01/2024 10:30 AM
Troubleshooting
Some lines aren't being parsed
Check if those lines actually contain timestamps. The tool looks for timestamps at or near the beginning of each line. If your timestamps are in an unusual location, you might need to use a custom regex pattern.
Wrong format detected
In auto-detect mode, the tool uses pattern matching which can occasionally be ambiguous. Try selecting the specific input format from the dropdown to force correct parsing.
Sorting seems wrong
Lines that couldn't be parsed will be sorted to the end. Check the detection results panel to see which lines have parsing errors and why.
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Parsing Settings
Timestamps are detected and parsed per line.
%Y - Year (2024)%m - Month (01-12)%d - Day (01-31)%H - Hour (00-23)%M - Minute (00-59)%S - Second (00-59)%.3f - Milliseconds%z - Timezone offset