CD/DVD disc
CD/DVD disc measures ⌀120.0mm. It weighs about 16.0g.
Dimensions
| Diameter | 120.0 mm |
|---|---|
| Weight | 16.0 g |
CD/DVD
A standard CD or DVD measures 4.72 inches (120 mm) in diameter with a 0.59 inch (15 mm) center hole, and both formats share the same physical disc size. This page covers the exact dimensions, the difference between CD and DVD storage capacity, and how these discs compare to Blu-ray.
- Dimensions
- Mini disc variant
- CD vs DVD capacity
- CD/DVD vs Blu-ray
- Case and packaging sizes
- Frequently asked questions
- Are CDs and DVDs the same size?
- What is the diameter of a standard CD?
- Is a Blu-ray disc bigger than a DVD?
- How big is a mini CD?
- What size is a DVD case compared to a CD case?
- Related objects
Dimensions
| Measurement | Inches | Millimeters |
|---|---|---|
| Diameter | 4.72 | 120 |
| Center hole diameter | 0.59 | 15 |
| Thickness | 0.047 | 1.2 |
Mini disc variant
A smaller 3.15 inch (80 mm) mini CD/DVD also exists, holding less data and used mainly for business-card-style discs or camcorder mini-DVDs, though it has largely fallen out of use.
CD vs DVD capacity
| Format | Diameter (mm) | Capacity |
|---|---|---|
| CD | 120 | 700 MB |
| DVD (single layer) | 120 | 4.7 GB |
| DVD (dual layer) | 120 | 8.5 GB |
CD and DVD discs are physically identical in size. The capacity difference comes from how tightly data is packed on the disc surface, with DVDs using a smaller laser wavelength and finer tracking to fit far more data into the same 120 mm diameter.
CD/DVD vs Blu-ray
Blu-ray discs share the same 120 mm diameter and 15 mm center hole as CDs and DVDs, so they fit the same disc trays and cases. A single-layer Blu-ray holds 25 GB, again achieved through an even shorter laser wavelength rather than any change in the disc’s physical dimensions.
Case and packaging sizes
A standard jewel case for a CD measures about 5.6 x 4.9 inches (142 x 125 mm), while a standard DVD case (often called an Amaray case) measures about 7.5 x 5.3 inches (190 x 135 mm), noticeably larger than a CD jewel case despite holding a disc of the same size.
Frequently asked questions
Are CDs and DVDs the same size?
Yes. Both have a 120 mm (4.72 inch) diameter and a 15 mm center hole. The difference is in data density and capacity, not physical size.
What is the diameter of a standard CD?
4.72 inches (120 mm), the same as a standard DVD and Blu-ray disc.
Is a Blu-ray disc bigger than a DVD?
No. Blu-ray, DVD, and CD are all 120 mm in diameter. Blu-ray fits more data using a shorter laser wavelength, not a larger disc.
How big is a mini CD?
A mini CD or mini DVD measures 3.15 inches (80 mm) in diameter, smaller than the standard 120 mm disc, and holds less data.
What size is a DVD case compared to a CD case?
A standard DVD case is about 7.5 x 5.3 inches (190 x 135 mm), while a CD jewel case is smaller at about 5.6 x 4.9 inches (142 x 125 mm).
Related objects
Frequently Asked Questions
How much does a CD/DVD disc weigh?
A CD/DVD disc weighs about 16.0g.