Crafts Calculators
Calculators for DIY and hobby projects — lumber, resin, and other craft materials.
Number of Calculators: 8
What to Know
Material-quantity calculators for hobbyists: how much epoxy resin, board feet of lumber, soap-making lye, fabric, or yarn a specific project actually needs, each accounting for the waste margin a real project needs beyond the theoretical minimum.
Soap Lye specifically uses SoapCalc's own published saponification values, since an incorrect lye calculation for a soap recipe is a genuine safety issue, not just a wasted-material one. 3D Printing Cost and Picture Frame Mat round out the set for two more specific, common hobby projects.
- Woodworking Board FeetCalculate the board feet and estimated cost of lumber from its thickness, width, length, and quantity.
- Epoxy Resin Mixing & CoverageCalculate how much resin and hardener to mix at your product's ratio, or how much epoxy you need to coat a surface.
- Soap LyeCalculate how much lye (sodium hydroxide) and water a cold-process soap recipe needs, from your oils and superfat percentage.
- Picture Frame MatFind the exact mat opening to cut and the outer mat/frame size needed for a piece of artwork, including a standard overlap allowance.
- 3D Printing Filament Cost & TimeCalculate the material and electricity cost of a 3D print.
- Fabric YardageCalculate how much fabric to buy for a sewing project, including a waste margin.
- Knitting/Crochet YarnEstimate how much yarn you need for a knitting or crochet project from its size and yarn weight.
- Candle Wax and FragranceCalculate how much wax and fragrance oil you need to fill a candle container, given its volume, your wax type, and your fragrance load.