Screen Resolution
Work out pixel count and aspect ratio from a width and height.
Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.
Screen Resolution
How to use this tool
- Enter your values in the fields above.
- Press Generate to see the result.
- Use Load sample to try the worked example, Copy result to copy it, or Clear to start again.
Worked example
1920 by 1080 gives 2073600 pixels at 16:9, about 1.78:1.
What this tool does not do / Limits
This calculates from the values you enter, or from this screen when the fields are left blank in a browser. It cannot measure a different device.
Frequently asked questions
Can it detect my screen?
Yes, in a browser: leave both fields blank and press Generate.
What is aspect ratio?
Width divided by height, reduced to whole numbers such as 16:9.
Related tools
JSON Studio
Format, validate, minify, query and compare JSON in your browser, with precise line-and-column errors.
LiveRegex Tester
Test patterns against sample text with match highlighting, capture groups and a safe one-second timeout.
LiveSecurity Header and DNS Checker
Check HSTS, CSP and other security headers, TLS details, and DNS/email authentication records (SPF, DKIM, DMARC).
Live