Shingle Calculator Hip Roof
Estimate roof area, shingles, bundles, hip and ridge caps, starter strips, drip edge, underlayment, and waste for common hip roof layouts.
🏘 Hip Roof Presets
📐 Roof Measurements
Hip Roof Shingle Estimate
🧱 Material and Spec Grid
📊 Pitch Slope Reference
| Pitch | Slope factor | Roof type | Waste guide |
|---|---|---|---|
| 3/12 | 1.031 | Low slope hip | 10% if simple |
| 5/12 | 1.083 | Common porch hip | 10-12% |
| 6/12 | 1.118 | Typical house hip | 12% |
| 8/12 | 1.202 | Steeper hip roof | 12-15% |
| 10/12 | 1.302 | High pitch hip | 15-20% |
🏗 Hip Roof Layout Reference
| Layout | Area basis | Cap lines | Best input use |
|---|---|---|---|
| Simple rectangular hip | Footprint x slope factor | 4 hips plus ridge | Most single-block homes |
| Square pyramid hip | Square footprint x slope factor | 4 hips, no ridge | Gazebos and square garages |
| L-shaped cross hip | Footprint with layout factor | Added hips and valley | Main roof plus wing |
| Porch or addition hip | Measured porch footprint | Short hips or no ridge | Small attached roofs |
📦 Shingle and Accessory Coverage
| Material | Typical coverage | Calculator input | Rounding rule |
|---|---|---|---|
| Field shingles | 33.3 sq ft per bundle | Bundle coverage | Round up |
| Hip and ridge caps | 20-25 linear ft per bundle | Cap coverage | Round up |
| Starter strip | 100-120 linear ft per bundle | Starter coverage | Round up |
| Drip edge | 10 ft stick or 3.05 m piece | Eave perimeter | Round up |
| Underlayment | 400 sq ft net roll allowance | Roof area before waste | Round up |
🏡 Common Hip Roof Examples
| Project | Footprint | Pitch | Typical materials |
|---|---|---|---|
| Detached garage hip | 22 x 24 ft | 5/12 | 20 bundles, 4 cap bundles |
| Small ranch hip | 24 x 36 ft | 6/12 | 34 bundles, 5 cap bundles |
| Square pavilion hip | 20 x 20 ft | 5/12 | 15 bundles, 3 cap bundles |
| Large house hip | 32 x 52 ft | 7/12 | 67 bundles, 7 cap bundles |
Example material counts vary with overhang, waste setting, cap product coverage, and whether the roof has cross-hip valleys.
💡 Calculation Tips
A hip roof has clean lines where slopes intersects on all four corners, which makes this style look nice from the road. But it takes longer to cut and also means that you’ll need a few more shingle. It’s pretty straightforward in terms of geometry (you could even sketch it out), but unless you pay attention to the math it will throw off your estimate of materials. So it’s important to nail down those numbers before the truck arrive with your materials.
While the calculator does all the work for you after you input dimensions, it helps to understand how the math works so you don’t end up running short (or storing excess) material: First up is the footprint. That’s your base line in real life. To calculate this, you’re simply going to measure across each of the outside walls from corner-to-corner, regardless off the overhang, to determine total raw square footage.
How to Calculate Roofing Materials for a Hip Roof
From there, the program uses a slope factor based on your entered pitch. Keep in mind that this cannot be changed. A 6/12 pitched roof covers FAR more space then you might think based off the square footage of your floor plan. If your roof isn’t flat, do not measure the surface your home sits on to purchase shingles.
Waste makes all the difference with pitch. If it’s a simple gable roof, you’re cutting away the edges of your bundle, so you lose a little material. But if it’s a hip roof, each and every course will end with a diagonal cut, resulting in those messy diagonals you can’t easily use again. This greatly increase your waste factor. The calculator lets you adjust for it by choosing a percentage of waste (typically from 10-15% for typical houses). Ignore the pile of scraps, and it’s easy to underbid yourself.
The tool also divides caps from field shingles (they’re totally separate products with different applications in different roles), since you’ll need to know how many linear feet of cap material your particular design needs (running out half-way up the ridge and stopping work cold is a disaster) as well as how much field shingles it will take for its large surface coverage. That’s estimated by the calculator using the hip/ridge lines generated from your layout selection and perimeter.
Other smaller piece such as starter and drip edge are also frequently overlooked until after the roofing guys arrive. Drip edge channels water away from the fascia boards into the gutters. Starter shingles protects against wind uplift by providing a critical base layer at the eaves. We count these all around the building (including corners). This rounds out to full bundles because the supplier won’t sell you a fraction of a bundle. Small aggravation but it would of save more headaches down the road.
Overhang is also hugely undervalued by most home owners. A single additional foot of overhang on every side will noticeably increase overall roof area… Particularly for wider homes. This feature makes the calculator explicit about its treatment of overhang; it considers it a part of the full surface area requiring coverage. You don’t need to remember to manually add it later.
Bundles also differ from brand to brand in terms of materials covered, so be sure to check out the specs for your bundle when making your purchase. Typically, 33 sq ft is covered per bundle and three bundles equal one roofing square. You can adjust that if you’re going with something different than your average architectural shingle. That way you’ll end up with the correct number of bundles based off what’s actualy on the pallet.
The last component of this planning exercise is safety. Steeper pitches are trickier to work with and can results in higher waste. Go towards the high side of the waste scale if you’ve got a steep pitch to your roof. Better to have an extra bundle on the driveway than to send your crew back out while you wait for it.
A hip roof is ultimately triangles, triangles that deserve to be respected in their shape. The number of shingles isn’t all that matters; it’s also the respect for the cuts, for the caps, for the triangular waste inherent in diagonal lines. Respect the math, and the install goes smooth, and what you end up with looks as good as it did the moment you first tilted your head back and stared up at that slope.
