Adhesives & Fasteners Calculators
Calculate glue quantities, screw sizes, nail gauges, and fastener spacing for strong, reliable woodworking joints.
Wood Glue Calculator
Calculate PVA and polyurethane glue quantities for edge and face joints.
Screw Size Calculator
Determine the correct screw gauge, length, and pilot hole for wood joints.
Nail Size Calculator
Select the right nail type, gauge, and length for your woodworking task.
Bolt Size Calculator
Calculate bolt diameter, length, and washer requirements for timber connections.
Epoxy Mix Calculator
Calculate resin and hardener quantities for two-part epoxy mixing.
Glue Spread Calculator
Work out the correct glue spread rate for optimal bond strength.
Fastener Spacing Calculator
Calculate optimal screw or nail spacing to avoid splitting.
Wood Plug Calculator
Determine plug sizes and quantities for concealing screw holes.
8 free calculators in Adhesives & Fasteners
Adhesive and Fastener Calculations
Choosing the right adhesive or fastener and using the correct amount is essential for strong, long-lasting woodworking joints. Too little glue starves the joint; too much creates a mess and weakens the bond. Wrong screw sizes can split the wood or fail to hold.
PVA wood glue is the most common adhesive in woodworking. The optimal spread rate is typically 150–200 g/m² for a single glue line. Our wood glue calculator estimates the total glue needed based on your joint areas and the number of surfaces to glue.
Screw selection depends on the timber thickness, wood species, and joint type. The general rule is that the screw should penetrate at least twice the thickness of the piece being attached. Our screw size calculator recommends gauge, length, and pilot hole size for your specific situation.
Two-part epoxy requires precise mixing ratios for proper curing. Most woodworking epoxies use a 1:1 or 2:1 resin-to-hardener ratio by volume. Our epoxy mix calculator works out exact quantities to avoid weak joints from incorrect mixing.