Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Sewing
Quilt Backing Calculator
Determines how many yards of backing fabric to buy for any quilt, accounting for overhang, piecing seams, and pre-wash shrinkage. Use it before shopping to avoid running short.
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 | 5 | 3 |
| Result | Backing Fabric Needed (yards) | Total Cutting Length (inches) |
| What it does | Determines how many yards of backing fabric to buy for any quilt, accounting for overhang, piecing seams, and pre-wash shrinkage. Use it before shopping to avoid running short. | 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. |