Free online file hash calculator. Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 checksums directly in your browser. No uploads, no dependencies, 100% client-side.

Free online discount calculator. Instantly calculate the final price, amount saved, and percentage discount for any product or service. Easy and responsive tool.

Free car loan calculator to estimate monthly payments, total interest, and loan cost. Easy to use, responsive design with no sign-up required.

Free online temperature converter tool. Instantly convert between Celsius, Fahrenheit, and Kelvin units. No installation required, works on all devices.

Convert inches, feet, yards, miles to meters, cm, mm. Imperial to metric conversion.

Generate random valid port numbers for testing. Filter by well-known, registered, or dynamic ranges. Exclude common ports.