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Siding calculator

Estimate siding squares, net wall area, waste, trim allowance, material range, labor range, and contractor total.

Reviewed · May 9, 2026

Home Project Estimates

Siding calculator

May 9, 2026

160 linear ft perimeter with 9 ft walls.

Siding quantity
13.9 squares
1,386 sq ft order area including 10% waste
Net wall area
1,260 sq ft
180 sq ft openings deducted
Trim and wrap
1,260 sq ft
Planning allowance based on net siding area
DIY material total
$3,717–$11,088
Siding, housewrap, trim, starter, and fastener allowance
Labor range
$3,024–$6,930
Directional siding installation labor
Contractor total
$6,741–$18,018
Materials plus labor

Shopping list

  • vinyl siding13.9 squares
  • Housewrap, starter strips, corners, trim, fastenersAllowance included
  • Caulk and flashing tapeAs needed

Assumptions

  • Siding square is 100 sq ft
  • 10% waste buffer
  • Openings are deducted as one total area input
  • U.S. near average; pricing data: U.S. near average pricing

Planning estimate only. Not a contractor quote, engineering advice, or permit review.

Project inputs
U.S. near average
Units
linear ft
ft
sq ft
%
Estimated result

160 linear ft perimeter with 9 ft walls.

Siding quantity
13.9 squares
1,386 sq ft order area including 10% waste
Net wall area
1,260 sq ft
180 sq ft openings deducted
Trim and wrap
1,260 sq ft
Planning allowance based on net siding area
DIY material total
$3,717–$11,088
Siding, housewrap, trim, starter, and fastener allowance
Labor range
$3,024–$6,930
Directional siding installation labor
Contractor total
$6,741–$18,018
Materials plus labor
Gables, wall jogs, sheathing repair, removal, trim detail, and tall access can change siding quotes.

Shopping list

  • vinyl siding13.9 squares
  • Housewrap, starter strips, corners, trim, fastenersAllowance included
  • Caulk and flashing tapeAs needed

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Assumptions in this estimate

  • Siding square is 100 sq ft
  • 10% waste buffer
  • Openings are deducted as one total area input
  • U.S. near average; pricing data: U.S. near average pricing

Saved estimates

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How this is calculated

  • Gross wall area is perimeter x average wall height.
  • Window and door area is deducted as one total opening input.
  • Siding squares divide order area by 100 sq ft after waste is added.

Assumption register

Item Low Typical High Source
Siding square 100 100 100 Homewyse vinyl siding cost calculator
Checked 2026-05-10 · high confidence
Starter waste 7 10 15 Homewyse vinyl siding cost calculator
Checked 2026-05-10 · medium confidence
Installed siding range 6.5 10.5 19 Homewyse vinyl siding installed benchmark
Checked 2026-05-10 · low confidence

Last reviewed: May 9, 2026. These values are planning defaults, not live prices.

Common mistakes

  • Forgetting gables, dormers, corners, trim, and wall jogs.
  • Treating siding material cost as the full installed cost.
  • Skipping sheathing, water-resistive barrier, and flashing repair allowances.

FAQ

What is a siding square?

A siding square is 100 sq ft of siding area.

Should openings be deducted?

For planning, deduct a rough combined area for windows and doors, then keep waste conservative.

Does this include removal?

No. Existing siding removal and disposal should be priced separately.

Limitations

This calculator uses simplified wall geometry. Gables, multi-story access, trim packages, sheathing repair, and removal scope can change real quotes.

This estimate is for planning only. It is not a contractor quote, engineering advice, or permit review.

Next step

Measure once more, compare the result with a real quote or shopping cart, and review the assumptions before buying materials.

Read the DIY vs contractor guide for this project

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