They’re commonly called mini CDs, 8 cm CDs, or 3-inch CDs. When they’re recordable, you’ll often see them listed as mini CD-R.

• Typical diameter: 8 cm (about 3 inches)
• Common capacity: around 210 MB or up to about 24 minutes of audio
• Typical uses: short audio mixes, software drivers, samplers, and small data projects

When you’re browsing, check the product details for size (8 cm/3-inch), rated capacity, and write speed to be sure it matches your drive and your project. Those specs can help you pick the right pack and avoid compatibility surprises.

Compatibility varies by device, so it’s best to check your manual first.

• Tray-loading drives with an inner 8 cm recess typically accept mini CDs.
• Slot-loading drives (common in cars and some laptops) may not support 8 cm discs.
• If your tray doesn’t show a smaller inner ring, avoid using mini discs in that device.
• When needed, an external optical drive that lists 8 cm support can be a practical option.

Never force a disc into any slot, and avoid adapters unless your device explicitly allows them. If you’re unsure, recording to a standard 12 cm disc can reduce the risk of jams or read errors.

Capacity depends on the specific disc and how you record it, but many mini CD-Rs are rated for approximately 210 MB of data or up to about 24 minutes of standard-quality audio.

• Write speeds often go up to 24X; choose a speed your drive supports.
• Actual recordable time varies with file type, bitrate, and authoring method.
• Always review the packaging or product description for the exact capacity and speed ratings.

If you’re archiving important files or audio, a short test burn at a moderate speed can help with compatibility, though results can vary by hardware and software.

You can print on mini CDs when both the discs and your printer support it. Look for mini CD-R with an inkjet-printable surface, often described as white and hub-printable.

• Use an inkjet printer that supports direct-to-disc printing and accepts 8 cm trays or adapters.
• Select the correct disc size in the printer software and apply light, even coverage.
• Let the ink dry completely before handling or playing the disc.
• If you’re not printing, label the clear inner hub with a soft, water-based marker.

Avoid inserting freshly printed discs into tight slots before they’re dry, and follow your printer and drive instructions for the best results.

Focus on minimizing scratches, heat, and flex to help discs last longer.

• Use polypropylene sleeves; options with a closing flap or soft liner can reduce scuffs.
• For collections, consider binders or zip wallets with stated disc capacities and reinforced pages.
• Hard plastic cases add crush protection when you’re on the go.
• Store discs upright in a cool, dry place and handle them by the edges.

On our site, you can filter by sleeve style, material, and organizer size to build a setup that fits your space. Check product details for features like binder holes or felt inserts to match how you like to file and retrieve discs.