Calculate estimated individual and total weight for bolts, hex nuts and flat washers using dimensions, material density and quantity.
How accurate is the bolt weight estimate? It is a dimensional approximation. The result can differ from a manufacturer's catalog mass because real fasteners contain threads, chamfers, fillets and other details.
Can I calculate bolts, nuts and washers together? Yes. Enter the dimensions and quantity for each component. The calculator reports each component and the combined batch weight.
Does bolt grade change weight? For identical geometry, different steel grades generally have very similar density, so the weight difference is usually small.
Can I use inches instead of millimeters? Yes. Bolt, nut and washer dimensions can independently be entered in millimeters or inches.
Can this calculate stainless steel bolt weight? Yes. Select a stainless-steel reference density or enter a custom density for the specific alloy.
Can this calculate a shipment of thousands of bolts? Yes. Enter the batch quantity and the total weight will be calculated in kilograms, pounds and other common units.
Why does a threaded bolt weigh less than a solid cylinder? The thread profile removes material from the theoretical solid shank, while the actual head and chamfers also change the geometry.
Should calculated weight be used for commercial billing? For commercial shipping, billing or certification, use the actual measured weight or an authoritative manufacturer specification.