Timestamp Converter
Convert between Unix timestamps, ISO-8601, and human-readable dates instantly. Works offline, 100% private.
Paste a Timestamp or Date
What is a Timestamp Converter?
A timestamp converter transforms timestamps from one format into another. Whether you're debugging API responses, analyzing server logs, or working with database records, timestamps appear in different formats — Unix seconds, Unix milliseconds, ISO-8601, or human-readable dates. This tool instantly converts between all of them, saving you time and preventing errors.
How to Use the Timestamp Converter
- Paste your timestamp or date — Unix seconds (1708617600), Unix milliseconds (1708617600000), ISO-8601 (2024-02-22T16:00:00Z), or any date string ("February 22, 2024").
- Auto-detection happens instantly — The tool recognizes your format automatically and displays what it found.
- View all formats simultaneously — See Unix seconds, Unix milliseconds, ISO-8601, local time, relative time, UTC, and timezone in one place.
- Copy any format — Click the Copy button next to any format to copy it to your clipboard.
- Use "Use Current Time" — Click this button to instantly convert today's date and time to all formats.
💡 Privacy guarantee: All conversion happens in your browser — your timestamps never leave your device.
Common Use Cases
- Debugging API responses: APIs often return timestamps in Unix format or ISO-8601. Convert them to human-readable dates to understand when events happened.
- Analyzing server logs: Server logs typically show timestamps. Convert them to your local timezone to understand which events happened when.
- Database queries: Databases store timestamps in various formats. Convert between formats to match your application's needs.
- Cross-timezone coordination: When working with teams across timezones, convert timestamps to see what "4 PM UTC" means in your local time.
- Calculating time differences: Convert two timestamps to human-readable dates, then calculate the gap between them.
Why You Need This Tool
Timestamps are everywhere in software: APIs, databases, logs, and event systems all use timestamps. Each system might use a different format, and manually converting between formats is error-prone. This tool handles all the heavy lifting — auto-detecting your input format and showing all relevant outputs at once.
No installation, no signup: Just paste and convert. Works offline, completely private, and runs 100% in your browser.
Understanding Key Concepts
Unix Epoch: January 1, 1970, 00:00:00 UTC. All Unix timestamps count seconds (or milliseconds) from this moment.
UTC vs. Local Time: UTC is the global standard. Your local time is UTC adjusted by your timezone offset. A timestamp can be represented in both — they describe the same moment, just in different timezones.
Unix Seconds vs. Milliseconds: Most programming languages use either seconds or milliseconds. JavaScript uses milliseconds, Python often uses seconds, Unix systems typically use seconds. This tool handles both and auto-detects which one you're using.