Camera calibration uses photographs of a known pattern to estimate lens distortion and the camera's geometry. These printable checkerboards work with OpenCV, ROS camera_calibration and other computer vision libraries. Download a PDF in A4, A3, A2 or A1, or generate a custom pattern below. The files have no watermarks or advertising.

Disable any page scaling or automatic page fitting when printing, otherwise the checker dimensions will be incorrect.

Generate Your Own Checkerboards

Generates Scalable Vector Graphic (SVG) files, which can be edited using free software such as Inkscape.

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Click to open as SVG, then print (Ctrl+P) to save as PDF

8x6 Checkerboards

A4 - 25mm squares - 8x6 vertices, 9x7 squares A4 - 30mm squares - 8x6 vertices, 9x7 squares A3 - 35mm squares - 8x6 vertices, 9x7 squares A3 - 40mm squares - 8x6 vertices, 9x7 squares A2 - 55mm squares - 8x6 vertices, 9x7 squares A2 - 60mm squares - 8x6 vertices, 9x7 squares A1 - 75mm squares - 8x6 vertices, 9x7 squares A1 - 80mm squares - 8x6 vertices, 9x7 squares

A4 Checkerboards

A4 - 20mm squares - 13x9 vertices, 14x10 squares A4 - 25mm squares - 10x7 vertices, 11x8 squares A4 - 30mm squares - 8x6 vertices, 9x7 squares A4 - 35mm squares - 7x4 vertices, 8x5 squares A4 - 40mm squares - 6x4 vertices, 7x5 squares A4 - 45mm squares - 5x3 vertices, 6x4 squares A4 - 50mm squares - 4x2 vertices, 5x3 squares A4 - 55mm squares - 4x2 vertices, 5x3 squares A4 - 60mm squares - 3x2 vertices, 4x3 squares A4 - 65mm squares - 3x2 vertices, 4x3 squares A4 - 70mm squares - 3x2 vertices, 4x3 squares

A3 Checkerboards

A3 - 20mm squares - 19x13 vertices, 20x14 squares A3 - 25mm squares - 15x10 vertices, 16x11 squares A3 - 30mm squares - 12x8 vertices, 13x9 squares A3 - 35mm squares - 10x7 vertices, 11x8 squares A3 - 40mm squares - 8x6 vertices, 9x7 squares A3 - 40mm squares - 9x6 vertices, 10x7 squares A3 - 45mm squares - 8x5 vertices, 9x6 squares A3 - 50mm squares - 7x4 vertices, 8x5 squares A3 - 55mm squares - 6x4 vertices, 7x5 squares A3 - 60mm squares - 5x3 vertices, 6x4 squares A3 - 65mm squares - 5x3 vertices, 6x4 squares A3 - 70mm squares - 4x3 vertices, 5x4 squares A3 - 75mm squares - 4x2 vertices, 5x3 squares A3 - 80mm squares - 4x2 vertices, 5x3 squares A3 - 85mm squares - 3x2 vertices, 4x3 squares A3 - 90mm squares - 3x2 vertices, 4x3 squares A3 - 95mm squares - 3x2 vertices, 4x3 squares

A2 Checkerboards

A2 - 20mm squares - 28x19 vertices, 29x20 squares A2 - 25mm squares - 22x15 vertices, 23x16 squares A2 - 30mm squares - 18x13 vertices, 19x14 squares A2 - 35mm squares - 15x11 vertices, 16x12 squares A2 - 40mm squares - 13x9 vertices, 14x10 squares A2 - 45mm squares - 12x8 vertices, 13x9 squares A2 - 50mm squares - 10x7 vertices, 11x8 squares A2 - 55mm squares - 9x6 vertices, 10x7 squares A2 - 60mm squares - 8x6 vertices, 9x7 squares A2 - 65mm squares - 8x5 vertices, 9x6 squares A2 - 70mm squares - 7x4 vertices, 8x5 squares A2 - 75mm squares - 6x4 vertices, 7x5 squares A2 - 80mm squares - 6x4 vertices, 7x5 squares A2 - 85mm squares - 5x3 vertices, 6x4 squares A2 - 90mm squares - 5x3 vertices, 6x4 squares A2 - 95mm squares - 5x3 vertices, 6x4 squares A2 - 100mm squares - 4x3 vertices, 5x4 squares A2 - 105mm squares - 4x3 vertices, 5x4 squares A2 - 110mm squares - 4x2 vertices, 5x3 squares A2 - 115mm squares - 4x2 vertices, 5x3 squares A2 - 120mm squares - 3x2 vertices, 4x3 squares A2 - 125mm squares - 3x2 vertices, 4x3 squares A2 - 130mm squares - 3x2 vertices, 4x3 squares A2 - 135mm squares - 3x2 vertices, 4x3 squares A2 - 140mm squares - 3x2 vertices, 4x3 squares

A1 Checkerboards

A1 - 20mm squares - 41x28 vertices, 42x29 squares A1 - 25mm squares - 32x22 vertices, 33x23 squares A1 - 30mm squares - 27x18 vertices, 28x19 squares A1 - 35mm squares - 23x15 vertices, 24x16 squares A1 - 40mm squares - 20x13 vertices, 21x14 squares A1 - 45mm squares - 17x12 vertices, 18x13 squares A1 - 50mm squares - 15x10 vertices, 16x11 squares A1 - 55mm squares - 14x9 vertices, 15x10 squares A1 - 60mm squares - 13x8 vertices, 14x9 squares A1 - 65mm squares - 11x8 vertices, 12x9 squares A1 - 70mm squares - 11x7 vertices, 12x8 squares A1 - 75mm squares - 10x6 vertices, 11x7 squares A1 - 80mm squares - 8x6 vertices, 9x7 squares A1 - 80mm squares - 9x6 vertices, 10x7 squares A1 - 85mm squares - 8x5 vertices, 9x6 squares A1 - 90mm squares - 8x5 vertices, 9x6 squares A1 - 95mm squares - 7x5 vertices, 8x6 squares A1 - 100mm squares - 7x4 vertices, 8x5 squares A1 - 105mm squares - 7x4 vertices, 8x5 squares A1 - 110mm squares - 6x4 vertices, 7x5 squares A1 - 115mm squares - 6x4 vertices, 7x5 squares A1 - 120mm squares - 6x4 vertices, 7x5 squares A1 - 125mm squares - 5x3 vertices, 6x4 squares A1 - 130mm squares - 5x3 vertices, 6x4 squares A1 - 135mm squares - 5x3 vertices, 6x4 squares A1 - 140mm squares - 5x3 vertices, 6x4 squares A1 - 145mm squares - 4x3 vertices, 5x4 squares A1 - 150mm squares - 4x2 vertices, 5x3 squares A1 - 155mm squares - 4x2 vertices, 5x3 squares A1 - 160mm squares - 4x2 vertices, 5x3 squares A1 - 165mm squares - 4x2 vertices, 5x3 squares A1 - 170mm squares - 3x2 vertices, 4x3 squares A1 - 175mm squares - 3x2 vertices, 4x3 squares A1 - 180mm squares - 3x2 vertices, 4x3 squares A1 - 185mm squares - 3x2 vertices, 4x3 squares A1 - 190mm squares - 3x2 vertices, 4x3 squares