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Rolled Fabric Length Estimator

Calculate the total length of fabric in meters based on core diameter, roll diameter, and fabric thickness in Millimeters, Centimeters, or Inches.

Fabric Roll Length (meters)
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Method and formula

Length (feet)=0.0655×(Dinch−dinch)×(Dinch+dinch)tinchLength (meters)=Length (feet)×0.3048\begin{aligned} \text{Length (feet)} &= \frac{0.0655 \times (D_{\text{inch}} - d_{\text{inch}}) \times (D_{\text{inch}} + d_{\text{inch}})}{t_{\text{inch}}} \\[1em] \text{Length (meters)} &= \text{Length (feet)} \times 0.3048 \end{aligned}

Input variables

VariableExpected entry
Unit of MeasurementChoose: Millimeter, Centimeter, Inch
Outside diameter (D)Enter a positive measured value.
Inside / Core diameter (d)Enter a positive measured value.
Fabric thickness (t)Enter a positive measured value.

Calculation workflow

  1. Enter the measurements in the displayed units.
  2. Check the selected yarn, fiber, weave, or trade unit where shown.
  3. Review each calculated output and its unit.
  4. Use Copy results to save the displayed values to recent history.

Outputs

  • Fabric Roll Length (meters)