Coil Calculator
Modes prevent circular math. Imperial/Metric supported. Densities editable.
Imperialin, lb
Inputs
Tip: Pick a mode, fill only the required fields, then Calculate.
Results
Base math: in + lb
Length
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Area
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Weight
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PIW
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lb per inch of width
Price (from CWT)
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Weight/100 × CWT
Weight Difference
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Enter “Actual Weight” to compare
Formulas used:
L = (π/4)·(OD² − ID²)/t
W = ρ·(π/4)·(OD² − ID²)·w
Area = w·L (one side)
W = ρ·(π/4)·(OD² − ID²)·w
Area = w·L (one side)