Frequent question: What is the diameter of a football?

The size of a football is roughly 22 cm (8.66 inches) in diameter for a regulation size 5 ball. Rules state that a size 5 ball must be 68 to 70 cm (27 to 28 in) in circumference. Averaging that to 69 cm (27 in) and then dividing by π gives about 22 cm (8.7 in) for a diameter.

What size is an official NFL football?

It shall have the form of a prolate spheroid and the size and weight shall be: long axis, 11 to 11 1/4 inches; long circumference, 28 to 28 1/2 inches; short circumference, 21 to 21 1/4 inches; weight, 14 to 15 ounces.

What is the diameter of a size 1 soccer ball?

Balls explanation of sizes

Size Circumference, cm Age / Dedicated
3 58 – 60 cm Male 16 years old and older
2 54 – 56 cm Female14 years old and older, and male from 12 up to 16 years old
1 50 – 52 cm Female from 8 up to 14 years old and male from 8 up to 12 years old
46 – 48 cm Up to 8 years old
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How do you measure diameter of a ball?

Measure the circumference of the fitness ball.

Divide the circumference by pi, or 3.14, to get the diameter. For example, if your ball has a circumference of 172 centimeters, its diameter is 172 / 3.14 = 55cm.

How big is a size 9 football?

The Correct Youth Football Sizes for Every Age Group (Chart)

Size Weight Long C.
Size 5 10 Ounces 24 Inches
Size 6 11 Ounces 25 Inches
Size 7 12.5 Ounces 26.25 Inches
Size 9 14 – 15 Ounces 27.75 – 28.5 inches

Are college footballs smaller than NFL?

In overall circumference, college footballs can be up to 1 1/4 inches smaller than NFL footballs. … At the widest point of the ball, the circumference is 27 3/4 inches to 28 1/2 inches in college and 28 inches to 28 1/2 inches in the NFL.

What size is a size 1 football?

Football Size Chart

Football Type Circumference (mm) Diameter (mm)
Size 3 580 – 600 184 – 190
Size 2 470 150
Size 1 420 130
Size 0 (Mini) 350 110

What size is a full size soccer ball?

Size 5 (Adult/Professional): U12 and up (ages 12 and older), 27-28 in/68-70 cm circumference. Size 4 (Youth): U8-U12 (ages 8-12), 25-26 in/63.5-66 cm circumference.

How big is a size 2 soccer ball?

Size 2 soccer balls are one of the smallest balls and are generally used for children aged three to five. These balls are generally 20-22 inches in circumference and weigh between 8-9 ounces.

How do you figure out a diameter?

The radius is the length from the center of a circle to the edge. Therefore, if you know the radius, multiply it by two to determine the diameter (diameter = 2 x radius).

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How do you find the diameter in inches?

Multiply the radius by 2 to find the diameter. For example, if you have a radius of 47 inches, multiply 47 by 2 to get a diameter of 94 inches.

What tool do you use to measure diameter?

Slide Calipers: A tool used to measure the inside and outside distance (diameter) and depth of a feature. Different models exist such as digital, dial and vernier calipers.

Is a size 5 football full size?

The size of a football is roughly 22 cm (8.66 inches) in diameter for a regulation size 5 ball. Rules state that a size 5 ball must be 68 to 70 cm (27 to 28 in) in circumference. Averaging that to 69 cm (27 in) and then dividing by π gives about 22 cm (8.7 in) for a diameter.

What size football should I get?

The FA recommend the following ball sizes: Size 3 football Under 7, 8 and 9 Age Groups. Size 4 football, Under 10, 11, 12, 13 and 14 Age Groups. Size 5 football, Under 14, 15, 16, 17, 18 to Adults.

Are NFL balls bigger than college?

An NFL football will measure 11″ long with a 22″ circumference at the midway point. … A college ball (D1) will be just slightly smaller (1/2″ in length and 1″ circumference). While the NFL ball is only slightly larger, it still seems to play a part in the drafting of QBs.

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