Web Development Calculators — Computer

Encode text to Base64 or decode Base64 strings back to plain text instantly.

Calculate base64 encoder decoder with inputs, formulas, and instant results.

css flexbox generator. Get instant, accurate results.

Calculate css unit converter with inputs, formulas, and instant results.

Calculate dpi with inputs, formulas, and instant results.

Estimate repository size growth based on commit frequency, file sizes, and branching strategy.

Calculate hex color converter with inputs, formulas, and instant results.

Calculate html entity encoder with inputs, formulas, and instant results.

Calculate image resize with inputs, formulas, and instant results.

jwt decoder. Get instant, accurate results.

Check the install size and download time impact of adding an npm package to your project.

Calculate optimal Open Graph and Twitter Card image dimensions for social media sharing.

Calculate page load time with inputs, formulas, and instant results.

Calculate regex tester with inputs, formulas, and instant results.

Calculate responsive design breakpoints for common device screen widths and pixel densities.

Check if your page title and meta description fit within Google SERP character limits.

svg path generator. Get instant, accurate results.

Convert pixel values to Tailwind CSS spacing, sizing, and font classes.

Encode special characters for URLs or decode percent-encoded URL strings.

Calculate viewport size with inputs, formulas, and instant results.

Estimate the CO2 emissions per page view based on page weight and hosting infrastructure.

Encode and decode HTML entities

Preview markdown in real-time

Read and decode QR codes