About ShedMath

ShedMath builds free calculators for home and yard projects. We started it because buying materials is where most DIY projects go wrong: too few bags means a second trip mid-pour, too many means money sitting in the garage.

Every calculator is fast, works on a phone, needs no account and shows its formula and sources. We would rather show you how a number is worked out than ask you to trust it.

Who we are

ShedMath is run by an independent team of developers. We are not affiliated with any manufacturer or retailer. If we ever earn money from links to products, we will label them clearly.

Contact

Questions, corrections or ideas for a new calculator: hello@shedmath.com.