Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Sewing
Quilt Backing Calculator
Calculates the number of fabric panels needed to back a quilt of any size, including overhang and a 1-inch seam buffer per panel. Use it when planning backing layout before cutting fabric.
Fill in the required fields to see your result.
Sewing
Hem Allowance Calculator
Compute the total fabric cut length needed for a garment with a chosen hem depth and a top seam allowance, so the finished length matches the design. Useful for skirts, trousers, curtains, and any project where precise length matters.
Fill in the required fields to see your result.
Key differences
| Quilt Backing Calculator | Hem Allowance Calculator | |
|---|---|---|
| Category | Sewing | Sewing |
| Inputs required | 4 | 3 |
| Result | Backing Fabric Needed (yards) | Total Cutting Length (inches) |
| What it does | Calculates the number of fabric panels needed to back a quilt of any size, including overhang and a 1-inch seam buffer per panel. Use it when planning backing layout before cutting fabric. | Compute the total fabric cut length needed for a garment with a chosen hem depth and a top seam allowance, so the finished length matches the design. Useful for skirts, trousers, curtains, and any project where precise length matters. |