{"name":"Common display pixel density reference","version":"2026-09-13","formula":"PPI = sqrt(horizontal pixels² + vertical pixels²) / diagonal inches","assumptions":["Resolution is the panel's native pixel grid.","Advertised diagonal equals visible diagonal.","Pixels are square."],"precision":"PPI is rounded to one decimal place.","rows":[{"label":"24-inch Full HD","diagonalInches":24,"widthPixels":1920,"heightPixels":1080,"ppi":91.8},{"label":"27-inch Full HD","diagonalInches":27,"widthPixels":1920,"heightPixels":1080,"ppi":81.6},{"label":"27-inch QHD","diagonalInches":27,"widthPixels":2560,"heightPixels":1440,"ppi":108.8},{"label":"27-inch 4K UHD","diagonalInches":27,"widthPixels":3840,"heightPixels":2160,"ppi":163.2},{"label":"32-inch QHD","diagonalInches":32,"widthPixels":2560,"heightPixels":1440,"ppi":91.8},{"label":"32-inch 4K UHD","diagonalInches":32,"widthPixels":3840,"heightPixels":2160,"ppi":137.7},{"label":"43-inch 4K UHD","diagonalInches":43,"widthPixels":3840,"heightPixels":2160,"ppi":102.5},{"label":"55-inch 4K UHD","diagonalInches":55,"widthPixels":3840,"heightPixels":2160,"ppi":80.1},{"label":"65-inch 4K UHD","diagonalInches":65,"widthPixels":3840,"heightPixels":2160,"ppi":67.8}]}