Digital & Dev
PPI/DPI, Aspect Ratio, Subnet, Base Converter, Color Code
PPI/DPI Calculator
Calculate screen PPI from resolution and display size, and check print DPI. Free PPI and DPI calculator to compare pixel density across devices.
Aspect Ratio Calculator
Calculate aspect ratios and convert resolutions. Find the matching width or height for 16:9, 4:3, and custom ratios. Free online aspect ratio calculator.
Subnet Calculator
Enter an IP address with subnet mask or CIDR prefix to get the network and broadcast address, usable host range, host count and IP class.
Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal, plus any custom base from 2 to 36. Free number base converter for programming.
Color Code Converter
Convert color codes between HEX, RGB, HSL, HSV and CMYK instantly. Live color preview and one-click copy for web design and CSS.