ดิจิทัลและคอมพิวเตอร์ เครื่องคิดเลข

Convert hexadecimal to binary and decimal. Instant conversion with formula, worked example and step-by-step method. Free online tool.

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. Instant result with formula, examples and step-by-step calculation. Free online calculator.

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. Instant result with formula, examples and step-by-step calculation. Free online calculator.

Count characters words and lines in any text. Instant result with formula, examples and step-by-step calculation. Free online calculator.

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