American Football vs. Volleyball
Comparing 2 standards across 16 specifications. 16 key differences identified.
Official American footballs are governed by the NFL and NCAA rulebooks. The pro/college ball (Size 9) features a prolate spheroid shape with a long axis of 11.0–11.25 in (27.9–28.6 cm), long circumference of 27.75–28.5 in (70.5–72.4 cm), short circumference of 20.75–21.25 in (52.7–54.0 cm), weight of 14.0–15.0 oz (397–425 g), and inflation pressure of 12.5–13.5 psi.
Official volleyballs are regulated by the FIVB (Fédération Internationale de Volleyball). Indoor volleyballs have a circumference of 65.0–67.0 cm (25.6–26.4 in), mass of 260–280 g (9.2–9.9 oz), and inflation pressure of 0.30–0.325 kg/cm² (4.26–4.61 psi / 294.3–318.82 hPa). Beach volleyballs share identical circumference and mass but operate at lower pressure of 0.175–0.225 kg/cm² (2.49–3.20 psi).
Specification Comparison Table
16 Parameters| Parameter / Spec | ||
|---|---|---|
|
Official Pro / College Tier
|
Size 9 (Wilson The Duke) NFL / NCAA Standard | — |
|
Long Axis Length
|
27.9–28.6 cm (11.0–11.25 in) | — |
|
Long Circumference
|
70.5–72.4 cm (27.75–28.5 in) | — |
|
Short Circumference
|
52.7–54.0 cm (20.75–21.25 in) | — |
|
Weight / Mass
|
397–425 g (14.0–15.0 oz) | — |
|
Inflation Pressure
|
12.5–13.5 psi (0.86–0.93 bar / 86.2–93.1 kPa) | — |
|
Outer Material
|
4-Piece Full-Grain Horween Leather with Pebble Grain Cowhide | — |
|
Lacing Specification
|
1 Lacing containing exactly 8 Cross-Stitches Pro Standard | — |
|
Indoor Circumference
|
— | 65.0–67.0 cm (25.6–26.4 in) |
|
Indoor Mass / Weight
|
— | 260–280 g (9.17–9.88 oz) |
|
Indoor Inflation Pressure
|
— | 0.300–0.325 kg/cm² (4.26–4.61 psi / 294.3–318.8 hPa) |
|
Beach Volleyball Circumference
|
— | 66.0–68.0 cm (26.0–26.8 in) |
|
Beach Volleyball Mass / Weight
|
— | 260–280 g (9.17–9.88 oz) |
|
Beach Inflation Pressure
|
— | 0.175–0.225 kg/cm² (2.49–3.20 psi / 171.6–220.6 hPa) |
|
Indoor Panel Construction
|
— | 18-Panel or 8-Panel (Mikasa V200W Dimpled Microfiber) Laminated Synthetic Leather |
|
Beach Panel Construction
|
— | 10-Panel or 18-Panel Stitched Water-Resistant Synthetic Sewn Panels |