What is 4x8 Sheet?
A 4x8 sheet is a panel of plywood, MDF, OSB, or other sheet goods measuring 4 feet wide by 8 feet long. In inches, that's 48 x 96. In metric, 1220 x 2440 mm. Each 4x8 sheet covers exactly 32 square feet of surface area.
The 4x8 sheet is the standard panel size across North America. The 4-foot width fits three stud bays on 16-inch centers. The 8-foot length matches standard wall height. Both dimensions are designed for framing, sheathing, subflooring, and cabinetry.
4x8 Sheet Dimensions: Inches, MM, and Square Footage
| Measurement | Value |
|---|---|
| Feet | 4 ft x 8 ft |
| Inches | 48 in x 96 in |
| Millimeters | 1220 mm x 2440 mm |
| Centimeters | 122 cm x 244 cm |
| Square feet | 32 sq ft |
| Square meters | 2.97 m² |
These are nominal dimensions. Actual measurements vary slightly by manufacturer and material.
Is a 4x8 Sheet of Plywood Really 4x8?
Short answer: close, but not exactly.
A factory-fresh sheet of sanded plywood typically measures 48 x 96 inches. But CDX sheathing plywood is often undersized by 1/8 inch in each direction (47-7/8 x 95-7/8 inches) to allow for expansion gaps during installation.
MDF and melamine panels are usually exact at 48 x 96. Baltic birch is a different story: the standard sheet is 5 x 5 feet (1525 x 1525 mm), not 4x8. Some suppliers carry 4x8 Baltic birch, but it's less common and more expensive.
If you're building cabinets or furniture where precision matters, measure your actual sheets before entering dimensions into a plywood calculator. A 1/8-inch difference across 10 panels adds up.
Weight of a 4x8 Sheet by Material
Weight varies significantly by material and thickness. Here are common weights for 3/4-inch (18mm) sheets:
| Material | Weight (3/4" sheet) | Notes |
|---|---|---|
| Plywood (softwood) | 60 lbs (27 kg) | CDX, sanded pine |
| Plywood (hardwood) | 70 lbs (32 kg) | Birch, oak veneer |
| Baltic birch | 75 lbs (34 kg) | 5x5 ft standard size |
| MDF | 96 lbs (44 kg) | Heaviest common panel |
| OSB | 54 lbs (24 kg) | Lightest structural option |
| Melamine | 85 lbs (39 kg) | Particleboard core + finish |
| Hardboard (1/4") | 18 lbs (8 kg) | Thin, for cabinet backs |
MDF at 96 lbs is a two-person lift. Plan your workshop logistics accordingly.
Materials Available in 4x8 Sheets
Not every sheet good comes in 4x8. Here's what does and what doesn't:
Standard 4x8 availability:
- Plywood: CDX, sanded pine, birch, oak, maple veneer. The most common sheet good at any lumber yard.
- MDF: standard and moisture-resistant (MR) grades. Smooth on both faces, ideal for painted cabinet parts.
- OSB: oriented strand board for sheathing and subflooring. Cheapest structural panel.
- Melamine: pre-finished particleboard. White, almond, or wood-print finish for shelving and cabinet interiors.
- Hardboard: smooth-faced panels for cabinet backs and drawer bottoms. Usually 1/8" or 1/4" thick.
Not typically 4x8:
- Baltic birch: standard is 5x5 ft (1525 x 1525 mm). Some suppliers stock 4x8, but at a premium.
- Acrylic/polycarbonate: usually sold in 4x8, but check thickness availability.
Other Standard Sheet Sizes
The 4x8 is the default, but other sizes exist:
| Size | Dimensions | Common Use |
|---|---|---|
| 4x4 ft | 48 x 48 in | Half sheets, project panels at home centers |
| 2x4 ft | 24 x 48 in | Craft panels, small projects |
| 5x5 ft | 60 x 60 in | Baltic birch standard |
| 4x10 ft | 48 x 120 in | Tall walls, commercial construction |
| 4x12 ft | 48 x 144 in | Tall walls, fewer horizontal joints |
| 2500 x 1250 mm | ~49.2 x 98.4 in | European standard (slightly larger than 4x8) |
When using a cutting optimizer, make sure to set the correct stock sheet size. Using 4x8 dimensions for Baltic birch wastes the extra material on each side.
Common Mistakes With 4x8 Sheets
- Assuming all 4x8 sheets are identical dimensions. CDX plywood, MDF, and melamine all have slightly different actual sizes. Measure before cutting.
- Forgetting kerf when planning cuts. A 3mm saw blade on 40 cuts removes 120mm of material. That's nearly 5 inches gone to sawdust. Enter your kerf width when optimizing.
- Not accounting for edge banding thickness. Adding 0.5mm banding to four edges of a part changes its final dimensions. Factor this in before cutting.
- Buying 4x8 Baltic birch without checking. Standard Baltic birch is 5x5 ft. If your cut list assumes 4x8, you'll either waste material or come up short.
- Ignoring grain direction on veneer plywood. A 4x8 sheet of oak veneer has grain running lengthwise. Cabinet doors cut across the grain look mismatched.
SmartCutList tells you exactly how many 4x8 sheets your project needs. Enter your pieces, set your sheet size, and get an optimized cutting diagram in 30 seconds. Free, no signup required.
Frequently Asked Questions
- How many square feet is a 4x8 sheet of plywood?
- A 4x8 sheet of plywood covers exactly 32 square feet (4 x 8 = 32). In metric, that's 2.97 square meters. This applies to any 4x8 panel: plywood, MDF, OSB, or melamine. To calculate how many sheets you need, divide your total square footage by 32 and add 10-15% for waste and cuts.
- What is 4x8 in inches?
- A 4x8 sheet measures 48 inches wide by 96 inches long. In millimeters, that's 1220 x 2440 mm. Note that some plywood (especially CDX sheathing) is manufactured slightly undersized at 47-7/8 x 95-7/8 inches to allow for expansion gaps in structural applications.
- Is a 4x8 sheet of plywood really 4x8?
- Mostly yes, but it depends on the type. Sanded plywood and MDF are typically a full 48 x 96 inches. CDX sheathing plywood is often 1/8 inch short in each direction. Baltic birch isn't 4x8 at all: the standard size is 5 x 5 feet (1525 x 1525 mm). Always measure your actual sheets before cutting.
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