Calculate pixels per inch from diagonal resolution and screen size. Determine screen sharpness and pixel density. Everything runs locally in your browser — nothing is uploaded.
Calculate dots per inch from pixel dimensions and physical size. Determine display and print resolution quality. Everything runs locally in your browser — nothing is uploaded.
Calculate width, height, and area from diagonal screen size and aspect ratio.
Calculate circle area and circumference from radius. Quick geometry calculations for circles of any size. Everything runs locally in your browser — nothing is uploaded.
Reduces image file size to a specific target — 50 KB, 100 KB, or 200 KB — by automatically adjusting JPEG quality, reducing pixel dimensions, or stripping EXIF metadata. Ideal for government forms, job applications, and upload portals with strict file size limits.
Computes cost per mille (CPM) — the cost advertisers pay per 1,000 ad impressions. Includes platform presets for YouTube, Twitch, Facebook, Instagram, TikTok, Twitter, and LinkedIn with average rates, plus RPM (revenue per mille) calculation for creators.
PPI Calculator lets you calculate pixels per inch from diagonal resolution and screen size. Determine screen sharpness and pixel density. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Calculate pixels per inch from diagonal resolution and screen size. Determine screen sharpness and pixel density. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Enter numeric values in the input fields — amounts, rates, or percentages.
Yes. After the initial page load, PPI Calculator runs entirely on your device with no internet connection needed. All processing is done locally.
Calculate pixels per inch from diagonal resolution and screen size. Determine screen sharpness and pixel density. Everything runs locally in your browser — nothing is uploaded. All calculations happen in your browser.
All calculators use standard mathematical formulas with high precision. Results are rounded per the calculator's conventions.
Yes for general calculations, but verify critical results independently.
No. All calculations happen in your browser — no data is stored on any server.