Estimating the amount of mulch may seem like a challenge and there are many who over the years have learned to eyeball. While the following formula isn’t perfect because you can’t down mulch at a perfect 3 or 4 inches over a large area. It’s always better to have too much than too little so always add in more than the formula shows.
To figure out your square footage.
- Take square footage time depth desired (in feet, i.e. 3″ = .25 feet), which gives volume in cubic feet.
- Divide that number by 27 to get cubic yards. There’s 27 cubic feet per yard (3′x3′x3′=27 cubic feet).