Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back — for developers and analytics.
About this tool
Unix timestamps count seconds since January 1, 1970 UTC. Developers encounter them in APIs, databases, analytics exports, and server logs.
How to use the Unix Timestamp Converter
- 1
Choose Unix → Date or Date → Unix mode.
- 2
Enter a timestamp or date string.
- 3
Copy the converted result.
Common pitfalls
JavaScript uses milliseconds — divide by 1000 when converting from Date.now(). Python and most APIs use seconds.
Always confirm timezone when comparing timestamps — UTC vs local time causes off-by-hours bugs.
Pro tips
- Use "current time" button for live debugging.
- Store timestamps in UTC; convert to local only for display.
Social Media Specs & Character Limits
Optimal text formatting, length guidelines, and parameters for all major platforms:
| Platform | Max Length | Ideal Length | Hashtag Policy |
|---|---|---|---|
| Instagram Feed & Reels | 2,200 chars | 125 - 150 chars | 3 - 5 tags (Recomm.) |
| TikTok Posts | 4,000 chars | 100 - 200 chars | 3 - 5 tags (Ideal) |
| YouTube Description | 5,000 chars | 1,500 chars (SEO) | 3 - 10 tags |
| X / Twitter Post | 280 chars | 100 - 140 chars | 1 - 2 tags |
| LinkedIn Articles & Posts | 3,000 chars | 500 - 1,000 chars | 3 - 5 tags |
Frequently Asked Questions
What is a Unix timestamp?▼
Seconds since January 1, 1970 UTC — used in databases, APIs, and logs.
Seconds vs milliseconds?▼
Unix timestamps are usually in seconds. JavaScript Date.now() returns milliseconds.