Cross-Stitch Framing Calculator

How the cross-stitch framing calculator works

Framing a finished cross-stitch is not the same as framing a print. The work sits on a piece of fabric that has to wrap around a mounting board and be laced or taped at the back, so you need spare, unstitched fabric all the way around. This calculator gives you the mat opening, the frame size, and — the part no other calculator checks — whether your fabric leaves enough margin to mount and lace. Framing the finished piece is its own craft, from washing and pressing to lacing it over board; the how to frame a cross-stitch guide walks through every step.

Start with the design size. If you think in stitches, enter the stitch count and the fabric count and the tool divides them: design inches = stitches ÷ count, so a 140-stitch row on 14-count Aida is 10 inches. Aida is worked over one block, so the count is the stitches per inch; linen and evenweave are usually worked over two threads, so tick that box and a 28-count cloth counts as 14 stitches per inch. Prefer to measure the stitched block with a ruler? Switch “Size by” to direct and type the inches or centimeters instead.

From the design, the window is the design plus a small reveal of blank fabric on each side — a quarter inch by default, so a sliver of cloth frames the stitching. The mat outside is the window plus your border on every side, and because a frame’s rabbet matches the mat’s outside, that outside is the frame size you order. Everything works in inches with fractions or in centimeters; the unit toggle converts in place. In the UK and Australia the mat is a mount and the window an aperture — same measurements, different words.

Worked example: a 140 × 120 stitch design on 14-count

Say you stitched a 140 × 120 design on 14-count Aida. That makes the design 10 × 8 9/16″ (140 ÷ 14 and 120 ÷ 14). Add a ¼″ fabric reveal and the window is about 10½ × 9 1/16″; add a 2″ mat border and the frame comes out near 14½ × 13 1/16″ — order that as a custom size, or step up to the next standard frame and widen the border to fill it. Cut your fabric at 14 × 13″ and you have a clean 2″ of bare cloth on the narrow sides — comfortable lacing room. Stitch the same design on a 12 × 11″ scrap instead and the margin drops to about 1″, and the tool turns amber.

Need just the window for a piece you’ll measure by hand? The mat opening calculator handles a single aperture, and will it fit checks a piece against a frame you already own.

Fabric & lacing: how much margin you need

The reason needlework needs its own calculator is the margin of bare fabric around the stitching. To mount a piece you fold that fabric over the edges of a board and either lace it across the back or hold it with acid-free tape; either way, too little fabric and you have nothing to grip. Framers and finishing guides agree on the numbers: leave roughly 2–3 inches per side for comfortable mounting (3–4 inches is the gold standard when you are still planning the project), and treat about 1 inch per side as the bare minimum to lace at all.

So the calculator measures the fabric you actually have — half of the difference between your fabric and your design on each axis, (fabric − design) ÷ 2 — and reports the tighter side. At 2 inches or more it confirms you have enough to lace. Between 1 and 2 it flags the margin as tight. Under 1 inch — or if a too-small scrap is smaller than the design itself — it turns amber and warns you, because that is the moment a kit’s skimpy fabric becomes a real problem. The mat and frame numbers still compute, so you can see what you’d need and decide how to mount: a narrower mat, a board-and-tape mount, or basted extension strips can all rescue a tight piece. The reveal is itself blank fabric shown in the window and counts within that margin, so a generous reveal leaves a little less to lace.

Finished size by fabric count

The same stitch count gives a different finished size on every fabric — the higher the count, the smaller (and finer) the result. Here is the 140 × 120 example across common counts, which is exactly why the calculator asks for the count and the over-2 option.

Common mistakes

• Cutting the fabric to the design size. The piece needs 2–3″ of bare fabric beyond the stitching to mount — measure the fabric, not just the stitched block, before you trim.
• Forgetting the “over 2” rule. A 28-count linen worked over two threads is 14 stitches per inch, not 28 — skip the box and the finished size comes out half what it should, throwing off the opening and frame.
• Sizing the window to the fabric edge. The mat opening is built around the stitched design plus a small reveal, not the whole piece of cloth — the rest of the fabric disappears behind the mat.
• Trusting kit fabric blindly. Many kits cut the Aida close, leaving barely an inch around the design. Check the margin before you start stitching, while you can still add fabric.