Fuse bead pegboard calculator

Convert between bead counts and finished size for mini (2.6 mm), midi (5 mm), and maxi (10 mm) beads — plus how many pegboards the design spans and how many beads to buy. Free, no signup.

Works with Perler, Hama, Artkal, and any other beads at the same pitch.

Pegboard Calculator

Start from

Patterns are sized in beads; a frame or a gift box is sized in centimeters. Enter whichever you have.

Pattern size (beads)

Wide

Tall

One pattern square = one bead = one peg. Pixel art imports at its exact pixel dimensions.

Bead size

Midi (5 mm) is the default size everywhere — the cheapest beads and the widest color range. Maxi is also sold as Biggie.

Pegboard size (pegs per side)

The standard square pegboard is 29×29 pegs — about 14.5 cm of midi beads. Boards interlock, so a bigger design just spans several of them. Set your own number if your board differs.

Spare beads to buy

Beads roll off the board, and a misfused section is worth redoing rather than living with.

Show finished size in

One bead, one peg

Finished size = beads × bead pitch, because every bead sits on exactly one peg. Midi beads are 5 mm, so two beads per centimeter and 29 of them across a standard board. What bead size and board shape actually change about a project is covered in the bead sizes and pegboards guide, and the fusing itself in how to iron fuse beads.

Results

29.0 × 29.0 cm

58 × 58 beads, midi (5 mm)

3,364

Total beads

3,701

With 10% spares, buy

Pegboards needed

2 × 2

Board layout

Spans 4 pegboards at 29×29 each. Interlock them and fuse section by section, or fuse the sections separately and join the seams on the second pass. Totals are whole-design numbers — the per-color counts live in the pattern's color key.

Common bead dimensions with finished sizes and pegboard counts
Beads	Finished	Total	Boards
29 × 29	14.5 × 14.5 cm	841	1
40 × 40	20.0 × 20.0 cm	1,600	4
58 × 58 (selected)	29.0 × 29.0 cm	3,364	4
64 × 64	32.0 × 32.0 cm	4,096	9
87 × 87	43.5 × 43.5 cm	7,569	9
100 × 100	50.0 × 50.0 cm	10,000	16
116 × 116	58.0 × 58.0 cm	13,456	16
145 × 145	72.5 × 72.5 cm	21,025	25

Common project dimensions at midi (5 mm) on a 29×29 pegboard. 29×29 is one board; 58×58 is four boards interlocked.

Designing the pattern?

The fuse bead pattern maker designs on a real bead grid and counts beads per color, or convert a photo at exactly the bead dimensions above. Free, in your browser.

Fuse bead pegboard calculator — bead count and bead size inputs beside the finished size, total beads, and pegboards-needed results.

The math behind the calculator: finished size = bead count × bead pitch, because every bead sits on exactly one peg. Midi beads are 5 mm — two per centimeter — mini are 2.6 mm, and maxi (also sold as Biggie) are 10 mm. The pegboard count is the same division done on the board: pattern width ÷ board width, rounded up, in each direction.

Board size matters more than beginners expect. The standard square pegboard is 29×29 pegs, about 14.5 cm of midi beads, and anything bigger has to be built across interlocked boards and fused in sections. That is not a problem — it is how every large piece gets made — but it is worth knowing before you start a 145-bead-wide design that will span twenty-five boards.

What the sizes and board shapes actually change about a project is covered in the bead sizes and pegboards guide; the fusing step itself is in how to iron fuse beads. To design at these dimensions, the fuse bead pattern maker works on a real bead grid with per-color bead counts, and photo to fuse beads converts an image at exactly the size you calculated here.

FAQ

How big is a 29x29 fuse bead pattern?

One standard square pegboard, 29 beads on a side. In midi beads (5 mm) that finishes at about 14.5 cm square — roughly 5.7 inches — and takes 841 beads. In mini beads (2.6 mm) the same 29×29 pattern is only 7.5 cm.

How many beads fit on a pegboard?

A standard 29×29-peg square board holds 841 beads. One bead sits on one peg, so board capacity is just pegs across × pegs down — and boards interlock, so a design wider than 29 beads simply spans several of them.

How many pegboards do I need for a big pattern?

Divide the pattern width by the board width and round up, then do the same for the height, and multiply. A 58×58 design is 2 boards across × 2 down = 4 boards. The calculator does this for whatever board size you own.

What size are fuse beads?

Three sizes: mini at 2.6 mm, midi at 5 mm, and maxi — sold as Biggie by some brands — at 10 mm. Midi is the default everywhere: the cheapest beads, the widest color range, and the size every pattern assumes unless it says otherwise.

How do I convert a bead count into centimeters?

Multiply by the bead pitch: 5 mm per midi bead, so two beads per centimeter. A 100-bead-wide design is 50 cm in midi, 26 cm in mini, and a meter in maxi. Every bead sits on one peg, so the pitch never varies within a size.

How many spare beads should I buy?

Ten percent covers the beads that roll off the board and the section you decide to redo after a bad fuse. Twenty is worth it for a large piece in one dominant color, where running out three rows from the end means waiting on a reorder.

See how your photo converts

Cross stitch is a real commitment — real thread, real hours, real frustration if the pattern doesn't work. Stitchmate lets you see exactly what you're getting into before you buy the first skein.

Upload an image, adjust the settings, check the FLOW Score — about 30 seconds to know if it'll work. Everything up to PDF export is free, no account needed.

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