Searching for "how much lumber for a 10x12 shed" returns rules of thumb and plan sets that list boards without saying how to cut them. Shed Designer, the free in-browser tool that frames a gable shed stud by stud, now publishes the answer for twelve common sizes (plus the hand-written 8x12 page), each generated by running the framing engine and the cut optimizer.
A few of the results, at the tool's starting prices (store listings seen 2026-10-29, possibly stale): an 8x8 takes 113 framing pieces from 73 boards, about $555 of lumber; a 10x12 takes 149 pieces from 93 boards, about $861; a 12x16 takes 172 pieces from 120 boards, about $1,157. Each page lists boards by material and length, and a test regenerates the pages and fails if any number drifts from the engine.
These are screening numbers for a standard design (8 ft walls, 2x4 walls 16" on centre, skids on gravel), not a permit set, and the tool has not been checked by building a shed from it. Open the lumber list by size or design your own size in the tool.