Prairie points are folded squares: each one’s base is exactly its cut size, and nesting them halfway doubles the count. Enter your quilt and point size; you get the points per edge, the squares to cut, and the yardage.
Your Quilt Edge
Arrangement
Nested: each point tucks half inside its neighbor’s fold, a dense sawtooth.
Edges
Points to Fold
140points
nested halfway · 31 per 48″ edge, 39 per 60″ edge
Fold each square in half on the diagonal, press, fold again, press. Pin from the corners toward the middle and ease the spacing there.Points face the quilt’s center while you sew; they flip out after.
- Squares to cut140 at 3″
- From strips11 strips (13 squares each)
- Fabric1 yd
- Each point stands1.25″ past the seam
The Formulas
side by side: points per edge = ⌊edge ÷ square⌋ · nested: points per edge = ⌊edge ÷ (square ÷ 2)⌋ − 1point stands = square ÷ 2 − ¼ seam · fabric = squares, strip-cut at the square sizeFold a square in half on the diagonal, then in half again: the base equals the cut size and the point stands half as tall. Nested points advance half a base each, so the edge holds nearly twice as many.
Worked Example
A 48 × 60 in throw, 3 in squares, nested halfway, all four sides:
- Each 48 in edge: ⌊48 ÷ 1.5⌋ − 1 = 31 points. Each 60 in edge: ⌊60 ÷ 1.5⌋ − 1 = 39. Total: 140 points.
- Side by side instead: 16 + 20 per edge pair → 72 points: airier, and half the folding.
- Fabric for 140 squares: 13 per 40 in strip → 11 strips at 3 in → 33 in → 1 yd. Each point stands 1¼ in past the seam.
How to Measure Your Inputs
- Measure the finished edge the points sew onto, after any borders: points go on with the binding step, not before the borders.
- Pick the square by the stand you want: the visible triangle stands half the cut size minus the ¼ in seam. A 3 in square shows 1¼ in of point.
- Corners: plan a full point at each corner and ease the spacing toward the middle; the calculator’s count leaves that slack because it rounds down.
Assumptions and Defaults
- Nested means tucked halfway, the classic sawtooth; shallower nesting lands between the two counts.
- Points fold from single squares (the double-fold method); fabric shows one print on both faces of the point.
- Squares strip-cut from 40 usable inches; yardage rounds up to the ⅛ yd.
Prairie Point Questions, Answered
How do I attach prairie points?
To attach prairie points, pin them with their raw edges along the quilt top’s raw edge, points facing inward, and sew a scant ¼ in seam. Then flip them outward, press, and finish the back by turning the backing under or with a knife edge, since pointed edges need no separate binding strip.
What size square do I cut for prairie points?
Three-inch squares are the everyday choice for prairie points, giving a 1¼ in point that looks dense when nested. Crib quilts suit 2½ in squares and bold edges suit 4 in squares; in every case the square sets the base width, and the point stands half the square minus the seam.
Should prairie points be nested or side by side?
Nested prairie points read as one continuous sawtooth and use nearly twice as many squares, whereas side-by-side points read as a row of separate pennants. Fold four of each and lay them along the edge, and you will see which suits the quilt more quickly than any count can show.
Do prairie points replace binding?
Yes, prairie points replace binding on the edges they finish, so you can skip the binding yardage for those sides. Quilts with points on only two sides still need binding on the other two, which is why the calculator offers a top-and-bottom option.