Seamwise: Quilt Calculator

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About this app

Seamwise gives quilters clear cut sizes and fabric yardage without an account or internet connection.

CALCULATE THE WHOLE QUILT
• Quilt size from blocks, sashing and borders, or from a bed size
• Binding, backing, batting, borders and repeated pieces
• Half-square triangles, flying geese and setting triangles

BUY ENOUGH FABRIC
Yardage always rounds up to the next 1/8 yard and also shows metres. Save projects and combine their fabric needs into a practical shopping list.

PAY ONCE, USE ANYWHERE
No ads. No subscription. No account. Seamwise works fully offline and collects or shares no data.
Exact quilt cuts and fabric yardage — saved projects, offline, no ads.
Updated on
Oct 17, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

What’s new

First release: calculate quilt size, binding, backing, borders, repeated pieces, half-square triangles, flying geese and setting triangles. Save projects and build a fabric shopping list. Works offline with no ads or account.