How many shingles in one square for roofing?

One square of roofing covers an area of 100 square feet. The number of shingles needed can vary based on the size and type of shingles used, but generally, a standard bundle of asphalt shingles covers about 33.3 square feet. This means you typically need three bundles of shingles to cover one square, totaling around 60 to 80 shingles, depending on the size of the shingles. Always check the manufacturer's specifications for precise requirements.