View Full Version : did I calculate mulch right?

Juan91

03-15-2010, 11:50 PM

so i found the square footage of of the property areas for mulch to be 776 sq. feet

so i took the 776 and multiplied by the depth of 3" (or .25 so the units are the same) and came up with 194 cubic feet

i then took 194 and divided by 27 so i could get yards and came up with 7.185 yards

does that sound right to you?

thanks for your input,

-Juan

ajslands

03-16-2010, 12:08 AM

Lol you did it perfectly!

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Juan91

03-16-2010, 12:09 AM

sarcasm or no?

you did it right, you could also take your square feet x it by 3" and divide it by 324 and you will get same answer.

Eden's Own

03-16-2010, 12:13 AM

there is a great mulch calculator at landscapecalculator.com that does all the math for you. But yes you did it right.

Juan91

03-16-2010, 12:19 AM

good to know eden!! thanks!

now to get prices on a yard of mulch, multiply by 2 or 3 and get me some money!!

brucec32

03-16-2010, 05:13 PM

I do it just as you did. I find it works better than trying to remember formulas. I always forget them in between jobs.

Juan91

03-16-2010, 11:20 PM

o.k. guys one more question. beds that are curved everywhere, do you block them off (make a rectangle or square) or do you measure the whole outside length and then figure out some way of finding width in certain areas?

im stumped on this one, getting some big estimates out of this dilemma

brucec32

03-17-2010, 04:20 PM

Short of graphing it and using calculus to find the area, you'll have to make educated guesses on that type of thing. Just extrapolate and use average widths, etc. Especially on small jobs it's not going to change things all that much. Just err on the side of more mulch. If you were a little high on your estimate of area they get a little thicker mulch over a smaller area, so what?

CMerLand

03-18-2010, 09:04 PM

Try this formula. Doesnt get much easier then this to remember.

3 yards per 1,000 sq ft per inch depth. Done.

2,328 sq ft = 7 yards

STIHL GUY

03-18-2010, 10:15 PM

you did fine, thats how i measure all my jobs

mike174

03-18-2010, 11:24 PM

so i found the square footage of of the property areas for mulch to be 776 sq. feet

so i took the 776 and multiplied by the depth of 3" (or .25 so the units are the same) and came up with 194 cubic feet

i then took 194 and divided by 27 so i could get yards and came up with 7.185 yards

does that sound right to you?

thanks for your input,

-Juan

This may or may not help. For an approximate amount I use the following (it's less math & pretty accurate):

3" mulch = 100 sqft coverage

2.5" mulch = 125 sqft coverage

2" = 150 sqft of coverage

So if you have 700 sqft of bed area, divide by 100 if you want a 3" depth (700/100) = 7 yards

2.5" = 700/125 = 5.6 yards

2" = 700/150 = 4.7 yards

It's not as accurate as your formula, but close & a lot easier for me when on an estimate.

HARRIS Property Management

03-18-2010, 11:27 PM

Sounds right to me

mike174

03-18-2010, 11:27 PM

Just a follow up about accuracy.....can anyone spread EXACTLY 3" of mulch over 700 sqft? Point being, you can be a little "off" when measuring mulch.

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