Maker Tools Calculators
Five free calculators for traditional crafts that often go with homestead life: leatherwork, natural dyeing, stained glass, blacksmithing and fibre. Each one turns a materials question into a number before you cut, dye or heat anything.
Leatherworking Hide Yield Calculator
Figure out how much leather to buy for a project, and how many hides that means — accounting for the waste every hide's irregular shape and flaws create.
Natural Dye Mordant Ratio Calculator
Get the right mordant-to-fiber ratio using the Weight of Fiber (WOF) system dyers have relied on for generations.
Stained Glass Lead/Copper Foil Calculator
Figure out how much copper foil or lead came to buy from your pattern's total seam length.
Steel Heat-Treat & Tempering Calculator
Find the critical and hardening temperatures for your steel's carbon content, and the temperature behind each classic tempering color.
Wool Fleece Yield & Shrinkage Calculator
Estimate how much clean, spinnable wool you'll actually get from a raw fleece, by wool type.
What each tool is for
The leather hide yield calculator estimates how many pieces you can cut from a hide, which helps you buy the right amount and plan layouts that waste less. The natural dye mordant calculator gives the weight of mordant and dye material for a given weight of fibre, which is the ratio that decides colour strength and fastness. The stained glass foil calculator estimates copper foil and lead came for a panel from its perimeter and piece count. The steel heat treat and tempering calculator gives temperature and time guidance for common tool steels. The wool fleece yield calculator estimates how much clean, spinnable fibre you will get from a raw fleece after scouring and processing losses.
How these connect to a homestead
A homestead produces raw materials: hides from animals you process, fleece from sheep or goats, dye plants from the garden, and steel from salvaged tools. The tools here help you turn those materials into something useful. If you raise sheep, the wool yield calculator pairs with the Starter Livestock Finder when deciding whether fibre animals fit your plan.
Safety notes for craft work
Several of these crafts involve real hazards. Mordants such as alum are low in toxicity, but some metal mordants are harmful and need dedicated pots and care in disposal. Stained glass work involves lead, so wash your hands, keep food out of the work area and ventilate when soldering. Heat treating steel involves temperatures high enough to cause severe burns and fires, so work with eye protection, gloves and a clear area. The temperatures in the calculator are general guidance for common steels, and the manufacturer's data sheet for your specific steel should be followed when it exists.
Getting accurate results
Craft calculators are only as good as their inputs. Weigh fibre dry before scouring, measure leather in square feet after trimming irregular edges, and use the actual steel grade if you know it. Treat the output as a planning figure, then adjust after your first batch and keep notes so the next batch is more accurate.
Common questions
Are these calculators for beginners?
They suit beginners and experienced makers alike. A beginner can use them to avoid buying too much material, and an experienced maker can use them to check a batch size or a layout quickly before starting.
Why do my results differ from the calculator?
Real materials vary. Hides differ in size and flaws, fibre varies by breed and washing method, and glass cuts rarely use every inch. Keep notes from each project and adjust your inputs next time, and your results will move closer to the calculator.
Do you plan more maker tools?
Yes. If there is a craft calculator you would use, suggest it.