Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Sewing
Fabric Gathering Ratio Calculator
Calculate the pre-gathered fabric length needed to achieve the right fullness for ruffles, skirt hems, and sleeves. Accounts for gathering ratio, fabric drape, and hem allowances.
Fill in the required fields to see your result.
Sewing
Seam Allowance & Cutting Calculator
Computes the cutting dimensions of a fabric piece by adding seam and hem allowances to your desired finished size. Use it whenever you need to cut fabric accurately from a custom or self-drafted pattern.
Fill in the required fields to see your result.
Key differences
| Fabric Gathering Ratio Calculator | Seam Allowance & Cutting Calculator | |
|---|---|---|
| Category | Sewing | Sewing |
| Inputs required | 4 | 4 |
| Result | Fabric Length to Cut (inches) | Cutting Dimensions (sq inches) |
| What it does | Calculate the pre-gathered fabric length needed to achieve the right fullness for ruffles, skirt hems, and sleeves. Accounts for gathering ratio, fabric drape, and hem allowances. | Computes the cutting dimensions of a fabric piece by adding seam and hem allowances to your desired finished size. Use it whenever you need to cut fabric accurately from a custom or self-drafted pattern. |