MaterialMath — Calculators for DIY Warriors
Tool · L-01

Mulch & topsoil calculator

Tell it your bed size and depth — get exact cubic yards, plus a bag-vs-bulk alert so you don't overpay at the garden center.

Inputs
Material
Length
ft
Width
ft
Depth
in
Bag size
Waste / settle factor10%

Mulch settles 10–15%. Topsoil compacts more — bump to 15%.