Fascia Board Calculator

Linear feet of fascia board needed.

LINEAR FEET NEEDED
— LF
fascia board

Usage Tip

Fascia width matches the rafter tail depth (typically 1×6 or 1×8). Buy longer boards to reduce joints.

THE MATH
LF = (Perimeter + Gable ends) × (1 + waste)
Where: fascia runs along all roof edges
• Fascia width matches the rafter tail (1×6 or 1×8)
• Buy longer boards to minimize joints
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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.