Tools / Unix Timestamp Converter
Unix Timestamp Converter
Convert Unix epoch seconds or milliseconds to local and UTC dates, or convert a date back to a timestamp. Runs entirely in your browser.
Frequently asked questions
Does this run in my browser?
Yes. Conversion uses your browser clock and timezone. Nothing is sent to a server.
How does Auto unit detection work?
Values with an absolute magnitude of one trillion or more are treated as milliseconds (typical 13-digit epochs). Smaller values are treated as seconds.
What timezone is Local?
Local uses your device timezone. UTC and ISO UTC are always timezone independent.
Let's build something you're proud of
I help businesses launch, optimize and maintain their online presence, from code to SEO.
Let's talkRelated tools
Image Resizer and Compressor
Free online image resizer and compressor. Resize photos, convert to WebP or JPEG and shrink file size in your browser, with no upload.
Case Converter
Free online case converter. Switch text between lowercase, UPPERCASE, Title Case, snake_case, kebab-case, camelCase and PascalCase in your browser.
Pixels to Ems Conversion
Convert pixels to ems and ems to pixels based on base font size. Free px to em calculator for responsive CSS.
HEX to RGB to HSL Conversion
Convert colors between HEX, RGB and HSL formats instantly. Free online color converter for CSS and design work.
robots.txt Generator
Free robots.txt generator. Build user-agent groups with allow and disallow rules, add a sitemap, block AI crawlers and copy the file.
Cron Expression Explainer
Free cron expression explainer. Translate a five-field crontab line into plain English and preview the next scheduled runs in your browser.