Cubic yards and tons of amendment for a given depth.
Area times depth gives cubic feet, converted into cubic yards for ordering and tons for spreading weight. Organic amendments lighten compacted ground and feed the soil life that roots depend on.
Soil Amendment
Volume = area x depth; yards = volume / 27; tons = volume x density / 2000
Volume = area x depth; yards = volume / 27; tons = volume x density / 2000 Area times depth gives cubic feet, converted into cubic yards for ordering and tons for spreading weight.
Organic amendments lighten compacted ground and feed the soil life that roots depend on.
This calculator takes 3 inputs: Area, Amendment depth, Bulk density. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.