Size & Fit Tools
The foundation of every sewing project. Find your pattern size, blend sizes where your body differs from the chart, and verify the ease is right for the fit you want.
Pattern Size Finder
Enter bust, waist, and hip — find your size across 11 brands with size charts. Sewing sizes are not store sizes.
Pattern Grading Calculator
Bust fits one size, hip fits another? Calculate the grading path to blend sizes at the side seam.
Ease Calculator
Is your pattern too tight or too loose? Compare your body to the pattern to check ease by fit style.
Size Chart Comparison
Compare sizes across 11 brands side by side. A size 12 at one brand is not the same at another.
Recommended order
1. Size Finder — determine your starting size by body measurements
2. Grading — if bust, waist, and hip fall in different sizes, blend them
3. Ease Check — measure the pattern and verify the ease suits your fit style
Why sewing sizes differ from store sizes
Ready-to-wear sizing varies wildly between brands and has shifted over decades (a modern size 8 is much larger than a 1960s size 8). Sewing pattern sizes are based on body measurements, not brand vanity sizing.
Most people are a different sewing pattern size than their store size. This is normal and expected. The Size Finder maps your actual measurements to the right pattern size across 11 brands.