Electrocalc

2.54 mm perfboard image generator

Draws a 1:1 perfboard image for use in CAD. The SVG carries real millimetre units, so it imports at exact size without scaling.

2×8 см (20×80)3×7 см (30×70)4×6 см (40×60)5×7 см (50×70)5×7 см гетинакс (50×70)6×8 см (60×80)7×9 см (70×90)8×12 см (80×120)9×15 см (90×150)12×18 см (120×180)

Presets follow common marketplace listings and are nominal — measure your own board if the drawing has to match it exactly.

Board

Width, mm

Height, mm

Corner radius, mm

Hole grid

Pitch, mm

Fit hole count automatically

Holes across (width)

Holes down (height)

Hole (drill) Ø, mm

Pad Ø, mm

Appearance

Board color

Pad finish

Double sided

Side shown

Mirror horizontally

White grid markup

Grid cell, holesSingle-sided boards carry a white 5×5 grid on the component side.

Edge pads

Pad rows along the short sides

Not present on every board — the common 5×7 bakelite one has none.

One pad per hole rowHow the boards are made — the two corner rows stay empty because the mounting hole is there, giving the usual 4 / 12 / 16 / 20 pads.

Pads per side

Pad band width, mm

Pad length, mm

Pad width, mm

Mounting holes

Four corner holes

Hole Ø, mm

Derive inset from hole ØCentre sits one board-wall (1 mm) past the hole edge: Ø2 → 2 mm, Ø3 → 2.5 mm. Measured on a 6×8 board; switch off to enter your own.

Inset from edges, mm

Snap to nearest grid node

Board size	70 × 50 mm
Grid	24 × 18 (432 holes)
Grid span	58.42 × 43.18 mm
Edge → first hole	5.79 / 3.41 mm
Edge → pad edge	4.89 / 2.51 mm
Mounting holes, centre to centre	66 × 46 mm (Ø2)
Mounting hole from edges	2 / 2 mm
Edge pads per side, pitch	16 × 2, 2.54 mm

1654 × 1181 px

SVG is the better choice for CAD: it is vector and dimensioned in millimetres. PNG is rendered at the selected resolution.