Measuring the Treatable Area

Application rate is critical to the efficacy of fertilizer and weed control products. If you are going to apply our products on your own, you will need to calculate the treatable square footage of your lawn. Follow these steps to do so. For convenience, download our size evaluation sheet in PDF format:

1. Determine the shape of your lot. Is it a square, pie shaped, irregular, etc.?
2. Draw a diagram of the shape on a piece of paper, then measure and note each side of the lot. You will be making calculations in square feet. A rolling tape measure works best, but if you know the width of your longest stride (typically 1 yard) you can pace it off and make the conversion (3 feet to 1 yard).
3. Diagram, measure and note the length and width of the areas you DO NOT wish to treat (house, pool, driveway, etc.) Try to include as much landscaping around the house as reasonably possible. For circles, find either the diameter or radius.
4. Calculate the area, in square feet, of the whole lot. Calculate the area, in square feet, of each area that is NOT to be treated.
5. Subtract from the area of the TOTAL lot the area of each area NOT to be treated. The remainder will be the treatable area of the yard, expressed in square feet.
   treatable area=(whole lot) - (areas not to be treated)
6. Reference materials:

• Area of a rectangle = width * length
• Area of a parallelogram = base * height
• Area of a triangle = (base * height) / 2
• Area of a trapezoid = ((base1 + base2) / 2) * height
• Area of a circle = pi * the radius squared, where pi = 3.14