Acrylic Sheet Thickness Information Tolerances for acrylic sheet thickness are +/- 10% and these tolerances can differ throughout the panel. Variations are however often less than 5%. Below we have listed out nominal and actual sheet thicknesses: 0.06" acrylic sheet = 1.5mm acrylic sheet 0.08" acrylic sheet = 2mm acrylic sheet 0.09" acrylic sheet = 2.3mm acrylic sheet 0.098" acrylic sheet = 2.5mm acrylic sheet 1/8" acrylic sheet = 3mm acrylic sheet = 0.118" acrylic sheet 3/16" acrylic sheet = 4.5mm = 0.177" acrylic sheet 1/4" acrylic sheet = 5.5mm acrylic sheet = 0.217" acrylic sheet 3/8" acrylic sheet = 9mm acrylic sheet = 0.354" acrylic sheet 1/2" acrylic sheet = 12mm acrylic sheet = 0.472" acrylic sheet 3/4" acrylic sheet = 18mm acrylic sheet = 0.709" acrylic sheet 1" acrylic sheet = 24mm acrylic sheet = 0.945" acrylic sheet 1.25" acrylic sheet = 30mm acrylic sheet = 1.18" acrylic sheet 1.5" acrylic sheet = 38mm acrylic sheet = 1.50" acrylic sheet 2" acrylic sheet = 50mm acrylic sheet = 1.97" acrylic sheet 3" acrylic sheet = 75mm acrylic sheet = 2.95" acrylic sheet