Digital and Computing Calculators

Convert hexadecimal to binary and decimal. Enter a hex value — get the binary digits, decimal equivalent, and conversion steps. Free.

Convert between ASCII text and character codes. Fast and accurate conversion with formula, worked examples and unit equivalents. Free online tool.

Convert between HEX RGB HSL and CMYK color codes. Fast and accurate conversion with formula, worked examples and unit equivalents. Free online tool.

Subnet mask CIDR and available host calculation. Enter your values — see the result with formula, examples, and step-by-step working. Free.

Image file size from resolution and bit depth. Instant conversion with formula, worked example and all representations shown.

Pixels per inch from screen size and resolution. Enter your values — see the result with formula, examples, and step-by-step working. Free.

Count characters words and lines in any text. Enter your values — see the result with formula, examples, and step-by-step working. Free.

Estimate file size after compression or conversion. Instant conversion with formula, worked example and all representations shown.