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Every page on Quilt Block Atlas, grouped the way the menus group them. Search engines read the same pages from the XML sitemap.

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Block guides (18)Block collectionsCalculatorsGuidesSite information

Block guides (18)

Bear's Paw 7×7 · 45 pieces · Difficulty 5 of 5 — advanced
Broken Dishes 2×2 · 8 pieces · Difficulty 2 of 5 — easy
Card Trick 3×3 · 24 pieces · Difficulty 4 of 5 — experienced
Churn Dash 3×3 · 17 pieces · Difficulty 3 of 5 — confident beginner
Flying Geese 4×1 · 12 pieces · Difficulty 3 of 5 — confident beginner
Friendship Star 3×3 · 13 pieces · Difficulty 2 of 5 — easy
Heart 4×4 · 30 pieces · Difficulty 4 of 5 — experienced
Jacob's Ladder 4×4 · 24 pieces · Difficulty 4 of 5 — experienced
Log Cabin strip · 13 pieces · Difficulty 2 of 5 — easy
Maple Leaf 3×3 · 15 pieces · Difficulty 3 of 5 — confident beginner
Nine Patch 3×3 · 9 pieces · Difficulty 1 of 5 — first block
Ohio Star 3×3 · 21 pieces · Difficulty 3 of 5 — confident beginner
Pinwheel 2×2 · 8 pieces · Difficulty 2 of 5 — easy
Rail Fence 4×4 · 4 pieces · Difficulty 1 of 5 — first block
Sawtooth Star 4×4 · 17 pieces · Difficulty 3 of 5 — confident beginner
Shoofly 3×3 · 13 pieces · Difficulty 2 of 5 — easy
Sister's Choice 5×5 · 33 pieces · Difficulty 4 of 5 — experienced
Square in a Square 1×1 · 5 pieces · Difficulty 3 of 5 — confident beginner

Block collections

Every block in the library Every block guide on one page, with a filter.
Quilt blocks for beginners Start with the lowest computed scores.
12 inch quilt blocks Compare blocks that divide cleanly at 12 inches.
Quilt block sizes Compare clean steps, cuttable eighths, and refused sizes.
Half square triangle blocks Browse every HST-bearing block and its terminology.

Calculators

All calculators Choose a calculator by what you are solving.
Quilt block grid calculator Find a clean finished size and its cutting dimensions.
Half square triangle calculator Compare two-, four-, and eight-at-a-time HST starting squares.
Flying geese calculator Compare no-waste and stitch-and-flip flying-geese cuts.
Quilt top size calculator Lay out blocks, sashing, and borders.
Fabric yardage calculator Turn dimensions and quantity into fabric yardage.

Guides

All guides Choose a guide or collection by the question you have.
Finished vs unfinished block size Keep finished, sewn unfinished, and starting cuts distinct.
The quarter inch seam allowance See what the seam removes and test it.
How to square up a quilt block Check and trim a pieced block.
Why is my quilt block the wrong size? Diagnose seams, printing, sizing, or an uncuttable target.
Quilt block glossary Look up the measurement and unit words used here.
Printing quilt patterns at 100% Calibrate the one-inch square before cutting.
Quilt block difficulty Read the computed score and its method.
Half square triangle chart Print every HST starting square from one chart.

Site information

About How every chart is computed, and what the site will not guess.
Contact Send a correction or a question by email.
Privacy What Google Analytics receives and what your browser keeps.
Terms How you can use the charts, and why to check one piece first.
Disclaimer What a chart number can and cannot promise.

Quilt Block Atlas

A free reference library of 18 quilt block guides. Accepted finished sizes resolve to ruler-compatible cuts; unsupported sizes are refused, never silently rounded.

Blocks

Every block
Quilt blocks for beginners
12 inch quilt blocks
Quilt block sizes
Half square triangle blocks

Calculators

All calculators
Quilt block grid calculator
Half square triangle calculator
Flying geese calculator
Quilt top size calculator
Fabric yardage calculator

Guides

All guides
Finished vs unfinished block size
The quarter inch seam allowance
How to square up a quilt block
Why is my quilt block the wrong size?
Quilt block glossary
Printing quilt patterns at 100%
Quilt block difficulty
Half square triangle chart

© 2026 Quilt Block Atlas

Published 2026-10-26 · Updated 2026-10-26

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