Ridge Cap & Hip Cap Calculator

Calculate ridge cap and hip cap shingle pieces and bundles for your roofing project.

Part of the Roofing & Structure calculators — see all tools in this category.

Ridge & Hip Lengths
ft

Total linear feet of main roof ridge

ft

Total linear feet of all hip ridges (0 if no hips)

in

Standard 5" for 3-tab shingles

%

Standard 10% for cuts and fitting

Hip caps install at a steeper angle than ridge caps, which can use slightly more material per linear foot. When in doubt, order an extra bundle — most suppliers accept returns on unopened bundles.

Results

Bundles Needed
1

33 linear ft with waste

Ridge Cap Pieces
72

30 ft of ridge

Hip Cap Pieces
0

0 ft of hip

Total Pieces
80

At 5" exposure

Ridge Vent
30 ft

Ridge vent length (informational)

Frequently Asked Questions

Related Calculators

How It Works

  1. 1. Measure Ridge and Hip Lengths

    The ridge is the peak where two roof planes meet (the horizontal line at the top). Hips are the angled ridges on hip-style roofs running from the ridge to the eave corners. Measure each in linear feet.

  2. 2. Calculate Pieces per Foot

    Standard 5" exposure means 2.4 cap shingle pieces per linear foot (12 ÷ 5 = 2.4). Tighter exposure (e.g., 4") uses more pieces; wider exposure (e.g., 6") uses fewer.

  3. 3. Apply Waste Factor

    A 10% waste factor is standard for cuts and fitting at ridge and hip ends. The calculator adds waste to the total linear footage before computing pieces and bundles.

  4. 4. Convert to Bundles

    A standard bundle covers approximately 33.3 linear feet of ridge or hip. The calculator divides total footage (with waste) by this coverage and rounds up to whole bundles.

Ridge Vent

Ridge vent length equals your ridge length (not hip length). If installing ridge vent, the vent goes under the cap shingles along the main ridge only. The calculator shows ridge vent footage as an informational output.

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Related Guides

Ridge Cap Calculator | How Many Ridge Cap Shingles Do I Need | ConstructCalculators