Is 8 inches standard for a chef's knife?
1534065#7
Also known as a cook's knife or French knife, the chef's knife is an all-purpose knife that is curved to allow the cook to rock the knife on the cutting board for a more precise cut. The broad and heavy blade also serves for chopping bone instead of the cleaver, making this knife the all purpose heavy knife for food preparation. Chef's knives are most commonly available between 15 cm and 30 cm (6 and 12 inches), though 20 cm (8 inches) is the most common size.
Kitchen knife
1534150#1
A chef's knife generally has a blade eight inches (20 centimeters) in length and in width, although individual models range from in length. There are two common types of blade shape in western chef's knives, French and German. German-style knives are more deeply and continuously curved along the whole cutting edge; the French style has an edge that is straighter until the end and then curves up to the tip. Neither style is inherently superior; personal preference will dictate the choice.
Chef's knife