Metrifold turns calculations into things you can use

Field notes

Navigation separates fabrication, crafts, and blending, with each listed tool paired to its outputs: the cone-pattern calculator names PDF, DXF, SVG, and a mark-out table; the tumbler generator lists true-size print and cutter formats; the Pearson square tool includes a diagram and worked calculation. Metrifold says formulas are checked against independent reference calculations and published examples. It also says calculations stay in the browser and added images are not uploaded; these are homepage claims, not independently tested here.