How Many Blocks for a Crib Quilt?
Planning a crib quilt around a block grid makes cutting and piecing predictable. The number of blocks you need depends entirely on the finished block size you choose and the standard crib quilt dimensions of 36 by 52 inches. Below are the real counts worked out from that size.
Step 1: Pick Your Finished Block Size
A "finished" block is its size after seam allowances are sewn in. Common choices are 4, 6, 8, 10, and 12 inches. Smaller blocks give a busier look with more seams; larger blocks finish faster but show off big prints. Pick the size that matches your fabric and patience before you count.
Step 2: Divide the Crib Quilt Dimensions
A crib quilt is 36 inches wide and 52 inches long. Divide each dimension by your finished block size and round up so the blocks cover the whole quilt. For 8 inch blocks: 36 ÷ 8 = 4.5, so round up to 5 blocks across; 52 ÷ 8 = 6.5, so round up to 7 blocks down. Multiply them: 5 × 7 = 35 blocks.
Step 3: Account for Seam Allowance
The count above uses finished sizes, but you cut each piece a half inch larger. Add 0.25 inch to every side, so a 4 inch finished block is cut at 4.5 inches and a 12 inch finished block at 12.5 inches. The block count itself does not change; only the cut square grows by half an inch per block.
Block Count Table for a 36×52 Crib Quilt
The table shows how many blocks fit across and down for each common finished size, the total, and the actual finished quilt size that grid produces. Note that only 4 inch blocks hit 36 by 52 exactly; larger blocks leave a few inches of slack you can absorb with a narrow border.
| Finished block | Across (36") | Down (52") | Total blocks | Actual size |
|---|---|---|---|---|
| 4" | 9 | 13 | 117 | 36×52 |
| 6" | 6 | 9 | 54 | 36×54 |
| 8" | 5 | 7 | 35 | 40×56 |
| 10" | 4 | 6 | 24 | 40×60 |
| 12" | 3 | 5 | 15 | 36×60 |
Frequently Asked Questions
How many 6 inch blocks do I need for a crib quilt?
A 36 by 52 inch crib quilt fits 6 blocks across (36 divided by 6) and 9 blocks down (52 divided by 6, rounded up), so you need 6 times 9, or 54 finished 6 inch blocks. The quilt will finish about 36 by 54 inches, a touch longer than the 52 inch target.
How many 12 inch blocks for a crib quilt?
You get 3 blocks across (36 divided by 12) and 5 blocks down (52 divided by 12, rounded up), or 3 times 5, equal to 15 finished 12 inch blocks. The quilt finishes about 36 by 60 inches.
What size blocks make a 36 by 52 inch crib quilt exactly?
Four-inch finished blocks do it exactly: 9 across and 13 down gives 117 blocks and a 36 by 52 inch quilt with no leftover space. Any larger block leaves a few inches of slack that you can fill with a border.
Do I cut the blocks at the finished size?
No. Add a quarter inch seam allowance on each side. For a 4 inch finished block cut a 4.5 inch square, and for a 12 inch finished block cut a 12.5 inch square. Block counts are based on finished sizes, so plan the cut size one half inch larger.