How the calculation works
Projected clearing width = straight blade width × cos(blade angle). Coverage past each side = (projected width − machine width) ÷ 2. Blade width needed for your entered margin = (machine width + 2 × side margin) ÷ cos(angle). Zero degrees means the blade is straight across the path.
Worked example
A 72-inch blade at 25° projects about 65.25 inches across the path. On a 64-inch machine, that leaves about 0.63 inches per side. A chosen 2-inch margin per side would need about 75.03 inches of geometric blade width at that angle.
Measure the actual working envelope
Use the maximum width of the machine in its winter setup, including any relevant tires, tracks, or accessories. The entered angle reduces the straight blade’s projected width across the path. The desired margin is your planning choice, not a manufacturer-required minimum.
Compatibility requires more than a blade dimension
A system includes the blade, mount, push tubes, and lifting mechanism. Confirm the specific approved combination and its complete installed weight. Snow loads and impacts add demands beyond static accessory weight. Use the manual’s operating instructions and do not infer fitment from a positive width result.
Further reading: WARN’s overview of complete powersports plow systems. Follow the documentation for your actual equipment or loan.
Frequently asked questions
Does this recommend a product?
No. It computes only width geometry. No manufacturer compatibility records or affiliate recommendations are supplied.
Can I enter a V-plow?
This simple projection is for a straight blade rotated as a unit. A V-plow or independently moving wings require their published working widths.
Does it check front axle capacity?
No. Added system weight and individual component limits must be verified separately.