Measure the widest width, deepest front-to-back depth, and tallest height of your furniture in its normal outdoor position to find the correct cover size.
Measuring for outdoor furniture covers comes down to three numbers: width, depth, and height. The catch is most people measure the tabletop or seat instead of the full footprint, leading to a cover that splits at the seams or flaps in the wind. Whether covering a dining set, sectional, or patio umbrella, the rules stay the same — grab the outermost dimensions of the piece as it actually sits outside, and you will land on the right size chart every time.
What Dimensions Do You Need To Record?
Every cover size chart asks for the same three measurements in U.S. inches. A typical listing reads like “90 in. L x 64 in. W x 28 in. H,” the dimensions the cover is built to fit. Measure your piece in its normal outdoor spot and record:
- Width: left outer edge to right outer edge, including armrests.
- Depth: front edge to farthest back point, including reclined backs or protruding cushions.
- Height: ground up to the highest point of the backrest or seat back.
Record the outermost dimensions, not just the seat or tabletop. Measure straight across the widest and deepest points even when the frame angles inward.
How To Measure Tables, Dining Sets, And Round Pieces
Rectangular tables get width from the longest side and depth from the shorter side; square tables have identical width and depth. For dining sets with tucked-in chairs, push every chair fully under the table before measuring and include chair backs in the outer dimensions, since the cover wraps the entire footprint. Round tables skip width and depth and use the diameter measured straight across the center. For umbrellas, close the canopy completely first, then measure height from the top of the pole to the bottom of the canopy plus canopy width at its widest point — a half-open measurement is useless, as the cover fits the fully closed position.
| Furniture Type | What To Measure | Key Detail |
|---|---|---|
| Chair or sofa | Width, depth, height | Include armrests and reclined backs |
| Sectional or L-shaped | Each section’s width, depth, height | May need modular or custom-fit covers |
| Rectangular table | Longest side, shorter side, height | Measure the full covered footprint |
| Square table | One side, one side, height | Width and depth are identical |
| Round table | Diameter only, plus height | Measure straight across the center |
| Dining set | Full footprint with chairs tucked | Include chair backs in outer dimensions |
| Umbrella | Closed height and canopy width | Measure with the canopy fully closed |
What Buffer Should You Add To The Measurements?
Most guidance recommends adding 1–2 inches to width and depth so the cover sits loosely rather than straining. For the bottom edge, the cover should end 1–2 inches above the patio surface to allow air circulation and prevent moisture wicking. Check the manufacturer’s size chart before ordering; if your piece falls between two sizes, choose the larger one using the 1–2 inch buffer as your tiebreaker.
For sectional or L-shaped furniture, a single universal cover rarely fits well — these need modular covers for each section or a custom option. For chaise lounges with adjustable backs, measure in the fully reclined position so the cover accommodates the tallest profile.
Measure in the position the furniture actually sits outdoors, not an idealized arrangement. A table pulled away from a wall gives different numbers than one pushed into a corner. Record the real-world dimensions, add your 1–2 inch buffer, and the cover will fit the piece you actually have.
FAQs
Should I measure furniture with cushions on or off?
Measure with cushions in place if they stay on the furniture outdoors, as the cover must clear the tallest point. If you store cushions separately, measure the base furniture alone and skip the extra inches.
What happens if my furniture falls between two cover sizes?
Choose the larger cover size. A slightly roomy cover protects better than one that stretches tight, because extra fabric allows airflow and reduces stress on seams and zippers. The 1–2 inch buffer should help you land cleanly on one size.
Do I need to measure a round table differently than a rectangular one?
Yes. Round tables use diameter — measure straight across the center from one outer edge to the opposite. Rectangular tables need both width and depth, with the longest side as width. Square tables measure the same on both sides.
References & Sources
- Frontgate. “The Right Fit: How To Measure For Replacement Cushions And Furniture Covers.” Covers measuring the outermost dimensions including armrests and protrusions.