How Many Squares Is My Roof?

A roofing square is 100 square feet of roof. Type your address: we read the house outline from map data, apply your pitch, and tell you the squares — and how many to order with waste. Free, no sign-up, no phone number.

1. Find your house

2. Your roof in squares

3. Fine-tune the count

Change the pitch, roof style or size and the estimate above updates.

Roof size from

Footprint under the roof (square feet)

Ground area under the main roof, garage included

Living area (square feet)

From your listing or tax record

Stories

Attached garage

Roof pitch

Not sure? 6/12 is typical. How to find it

Roof style

Complexity

Set from the outline when you look up an address

Eave overhang to add (feet)

Map outlines usually include part of the eaves already

Existing layers to remove

A planning count, not a survey. Squares come from a map outline plus the pitch you pick. Confirm on site or with a paid aerial report before ordering a full roof of material.

What a roofing square is

Roofers price and order by the square: 100 square feet of roof surface. A 2,500 sq ft roof is 25 squares. The number on a bid is usually a bit higher than the measured area because of waste for cuts at hips, valleys and rakes.

Squares = roof area (sq ft) ÷ 100 Squares to order = squares × (1 + waste) gable ≈ 10%, hip ≈ 15%, cut-up ≈ 20% Bundles ≈ squares to order × 3 (most 3-tab and architectural shingles)

Typical squares by house size (6/12 gable, two-car garage)

Planning figures for a simple gable at 6/12; your outline and pitch change the number
Living area (1-story)	Roof sq ft	Squares	To order (+10%)	Bundles
1,500 sq ft living	2,423	24.2	26.7	80
2,000 sq ft living	3,006	30.1	33.3	100
2,500 sq ft living	3,587	35.9	39.7	119
3,000 sq ft living	4,166	41.7	46.0	138

The planning house above. Living area 2,000 sq ft + two-car garage → footprint about 2,480 sq ft. With 1 ft of eaves and a 6/12 pitch: 3,006 sq ft of roof = 30.1 squares, or 33.3 to order with 10% waste.

How this page gets your number

Looks up the address and picks your house outline from OpenStreetMap.
Measures the footprint, adds a small eave allowance, multiplies by the pitch multiplier.
Divides by 100 for squares, then adds waste for the roof style you pick.

Want the full size breakdown (footprint, pitch multiplier, bundles and a price range)? Use roof measurement by address. Want a price for every material? Roof estimate by address.

Sources

Building outlines © OpenStreetMap contributors. Address search: Nominatim and the U.S. Census Bureau geocoder. Pitch multipliers are plain geometry. Waste factors are RoofGenius planning assumptions (gable 10%, hip 15%, cut-up 20%).

Frequently asked questions

How many squares is a 2,000 sq ft house?

About 30.1 squares of roof for a one-story house with a two-car garage and a 6/12 gable (~3,006 sq ft of roof), or about 33.3 squares to order with 10% waste. A two-story house with the same living area has a much smaller roof.

How do I calculate roofing squares?

Take the true roof area in square feet (footprint including overhangs, times the pitch multiplier) and divide by 100. Add waste before you order.

Is roof size the same as my home's square footage?

No. Living area is inside the walls on every floor. Roof size is the sloped surface over the top floor plus the garage and overhangs.

Can I get my roof squares from an address for free?

Yes. Type the address on this page. There is no sign-up or fee, and we never ask for your name, email or phone.

How accurate is an address-based square count?

When the house is mapped well, the footprint is usually within a few percent. Pitch and overhang are the bigger unknowns, so set those carefully before you order material.