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Mulch calculator

Estimate mulch volume, bag counts and cost for one or several plots.

Get started

  1. Enter total area or one rectangle per line, for example 6, 2, m. Each row may use a different unit.
  2. Set the depth and select a bulk or bag price unit. For a custom bag, enter its capacity under More options.

Example

Input

200 ft² at 2 in, 2 ft³ bags at 5 each.

Expected result

33.3 ft³, 17 bags, total cost 85.

Try it

Good to know

The calculation runs in your browser. Use consistent units in fields with no explicit unit.

Calculation method

Add the areas of non-overlapping plots, then multiply by depth and apply the allowance. Divide by bag capacity and round up. A bulk price uses the calculated volume.

A=∑iliwi,V=Ad(1+a/100),N=⌈VVbag⌉A=\sum_i l_iw_i,\quad V=Ad(1+a/100),\quad N=\left\lceil\frac{V}{V_{\rm bag}}\right\rceil

Calculation mode

Known area
  • Area
  • Area unit · cm² / m² / in² / ft² / yd² / acre / ha
  • Depth
  • Depth unit · mm / cm / m / in / ft / yd
  • Unit price
  • Price unit
  • Bag capacity
  • Bag unit · ft³ / yd³ / m³ / L
  • Waste allowance · %
Multiple rectangles
  • Length, width, unit per line
  • Depth
  • Depth unit · mm / cm / m / in / ft / yd
  • Unit price
  • Price unit
  • Bag capacity
  • Bag unit · ft³ / yd³ / m³ / L
  • Waste allowance · %