How wide is a compact disc?
A compact disc is about 12 cm (4.72 in) across.
Size source: en.wikipedia.org
Compared with things you know
- About 4.9 times as wide as a US quarter coin (2.43 cm)
- About 1.4 times as wide as a credit card (8.56 cm)
- About 50% as wide as a basketball (24 cm)
Did you know?
A CD has a 15 mm centre hole and holds up to 74 minutes of audio, later stretched to 80.
