เครื่องคิดเลขออกแบบ

Convert pixels to rem. Custom base font size. For responsive typography.

Convert em to pixels. Custom base. For typography and layout.

Convert between px, pt, em, rem, %, vw. All font size units. For typography.

Calculate line-height from font size and multiplier. For typography and readability.

Visual aspect ratio calculator with width/height inputs, common presets (16:9, 4:3, 1:1), device presets (iPhone, MacBook, 4K), and CSS aspect-ratio output.

Calculate new dimensions when resizing image. Maintain aspect ratio. For responsive images.