Home › Image Tools › Brick Mosaic Generator
Brick Mosaic Generator
Convert any photo into a build-ready toy-brick mosaic. Choose the baseplate size and a palette of real brick colors, preview the studs, then get the exact parts count and a printable section-by-section build guide PDF.
Last updated:
Parts list
| # | Color | Pieces | +5% spare | Share |
|---|
Advertisement
Advertisement
How to use the Brick Mosaic Generator
- Add a photo: drop, paste or choose an image. Simple, high-contrast photos and portraits work best. A sample is loaded to start.
- Choose a size such as one 48×48 baseplate, or set a custom width and height in studs.
- Pick colors: start with a palette preset and click color chips to add or remove colors you own.
- Adjust brightness, contrast, saturation and dithering until the preview looks right.
- Download the parts list (CSV), the build guide PDF and a PNG preview.
Brick mosaic sizes and piece counts
| Size (studs) | Pieces | Finished size | Typical use |
|---|---|---|---|
| 16 × 16 | 256 | 12.8 × 12.8 cm (5.0 in) | Coasters, icons, small logos |
| 32 × 32 | 1,024 | 25.6 × 25.6 cm (10.1 in) | Small portraits, pixel art |
| 48 × 48 | 2,304 | 38.4 × 38.4 cm (15.1 in) | Classic single-baseplate portrait |
| 64 × 64 | 4,096 | 51.2 × 51.2 cm (20.2 in) | Detailed portraits, wall art |
| 96 × 96 | 9,216 | 76.8 × 76.8 cm (30.2 in) | Large wall art from 2 × 2 large baseplates |
| 128 × 128 | 16,384 | 102.4 × 102.4 cm (40.3 in) | Statement pieces, group builds |
Formula: pieces = width × height and size in cm = studs × 0.8 (one stud pitch is 8 mm).
Tips for a great-looking mosaic
- Crop tight. At 48 studs wide, every stud counts. Faces should fill most of the frame; the tool crops the center of your photo to the chosen ratio.
- Use a plain background. Busy backgrounds turn into noise at low resolution. Remove or simplify it before converting if you can.
- Boost contrast slightly for portraits, and use the Portrait or Sepia palette for natural skin tones with few colors.
- Dithering or not? Dithering gives smoother gradients in skies and skin, while None gives clean, graphic areas that are easier to build.
- Limit to colors you own. Click color chips to switch colors off; the parts list updates instantly.
Building from the guide
- Sort your pieces by the color numbers from the parts list.
- Build one 16 × 16 section at a time, starting with A1 (top-left). Thick lines on each page divide the section into 4 × 4 blocks so you can keep your place.
- Press each piece firmly onto the baseplate and check every completed row against the guide before moving on.
Frequently asked questions
How big will my brick mosaic be?
One stud is 8 mm wide, so the physical size is the number of studs × 0.8 cm. A 48×48 mosaic is 38.4 × 38.4 cm (about 15.1 in), a 32×32 one is 25.6 cm, and a 96×96 mosaic made from four 48×48 baseplates is 76.8 cm square.
How many pieces do I need?
One 1×1 piece per stud: width × height. A 48×48 mosaic needs 2,304 pieces and a 64×64 needs 4,096. The parts list shows the exact count for every color. It is wise to buy about 5% extra, because small pieces are easy to lose.
Which pieces should I use?
Most brick mosaics use 1×1 round plates, 1×1 square plates or 1×1 flat tiles pressed onto a baseplate. Round plates give a classic dotted look and are usually cheapest; flat tiles give a smooth, modern finish. Choose the style in the tool to preview it; the counts are the same.
How are colors chosen?
Your photo is first scaled down to one pixel per stud. Each pixel is then matched to the closest color in your selected palette using the CIELAB color space, which measures color difference closer to how people see it than plain RGB. With dithering on, the rounding error is spread to neighboring studs, which gives smoother shading with few colors.
How do I read the build guide?
The PDF starts with a cover page with the preview and the full parts list, where every color has a number. Then the mosaic is split into 16×16 sections, one per page, labeled by row letter and column number (A1, A2, ...). Each square shows the color number, and a mini map shows where the section sits.
Are the colors exactly the same as real bricks?
The palette uses widely used approximations of common brick colors. Real plastic looks slightly different depending on lighting and screen settings, so treat the preview as a close guide. You can switch off colors you do not have so the mosaic only uses pieces you own.
Is this affiliated with any toy brick brand?
No. This is an independent free tool. It works with any compatible building bricks and plates.
Are all the tools on FreeToolCabin tested for quality and accuracy?
Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.
Related tools
Pixelate Image & Pixel Art ConverterTurn any picture into pixel art with retro palettes and dithering.Pixel Art MakerDraw pixel art on an 8 to 64 px grid with palettes, fill and mirror, then export PNG or SVG.Image Dithering ToolDither photos with Floyd-Steinberg, Atkinson or Bayer in 1-bit, Game Boy, CGA and retro palettes.Photo Mosaic MakerBuild a big picture out of many small photos by color matching, then export a high-res PNG.Background RemoverRemove image backgrounds automatically with AI.Photo EnhancerOne-click auto enhance: fix exposure, contrast, color cast and sharpness, one photo or a batch.Remove Object from PhotoBrush over unwanted objects, people or text and fill the area with matching background.Make Image TransparentRemove a white or solid-color background and save a transparent PNG, right in your browser.Photo to CartoonTurn photos into cartoons with smooth colors and bold outlines. Free, private, no upload.Add Watermark to PhotoAdd a text or logo watermark to one or many photos at once.Blur Image & Face Pixelate ToolBlur or pixelate faces, plates and backgrounds in a photo.Add Text to ImageAdd styled text layers with outline and shadow to any photo, then downloadRound Corners ImageGive any picture rounded, circle or squircle corners and save a transparent PNG.Grayscale Image ConverterTurn color photos into black and white with luma, luminance or average methods and sepia.Photo FiltersApply 27 one-click photo filters like Vintage, Noir and Teal & Orange with an intensity slider.Photo EditorEdit photos online: brightness, contrast, saturation, crop, rotate, flip and filters with undo.Image SharpenerSharpen soft or slightly blurry photos with a real unsharp mask and before/after view.Invert Image ColorsTurn any picture into a color negative, with R/G/B channel toggles and an intensity slider.Screenshot BeautifierPut screenshots on gradient backgrounds with padding, rounded corners, shadow and a browser frame.Image Metadata ViewerSee a photo's EXIF data: camera, lens, exposure, date and GPS location, then strip it in one click.EXIF RemoverRemove EXIF, GPS location and other metadata from JPG, PNG and WEBP photos.Online PaintDraw and paint in your browser: brushes, shapes, fill bucket, text, undo and PNG export.Photo to SketchTurn any photo into a pencil, charcoal or color sketch in your browser and download it.GIF Frame ExtractorSplit an animated GIF into PNG frames with delays, a sprite sheet and ZIP download.Photo Frame MakerPut photos in polaroid, film strip, gallery, rounded or shadow frames with a caption.Duotone GeneratorTurn any photo into a bold two-color duotone image with presets, custom colors and intensity.Glitch Image EffectAdd RGB split, scanlines, slice shifts and noise to a photo for a digital glitch look.Add Date Stamp to PhotoStamp the EXIF or a custom date on photos in a retro orange camera font. Batch and ZIP download.Add Drop Shadow to ImageAdd a drop, long or reflection shadow to PNGs and photos and save a transparent PNG.Add Text to GIFPut captions on animated GIFs with outline, position and frame range, then download.Blend Two ImagesOverlay two photos with opacity, 16 blend modes, fades and free positioning, then download.Blur Photo BackgroundBlur the background of any photo for a portrait-mode look. AI subject detection, no upload.Online Document ScannerTurn photos of paper into clean scans: auto edge detection, perspective fix, multi-page PDF.Add Film Grain to PhotoAdd realistic analog film grain, light leaks, fade and vignette to any photo, then download.GIF Speed ChangerSpeed up or slow down an animated GIF, or set each frame's delay, without losing quality.Halftone GeneratorTurn images into mono or CMYK halftone dots and lines; export PNG or SVG.Image Noise RemoverRemove grain and color noise from photos with median, bilateral or non-local means filters.Perspective CorrectionDrag 4 corners to straighten skewed photos of signs, screens and whiteboards, then download.Sports Tactics BoardDraw plays on basketball, soccer, football and hockey diagrams with players, arrows and animated frames.Add Outline to PNGAdd a stroke outline around transparent PNG cutouts: width, color, softness and double borders.Dehaze ImageRemove haze, fog and smog from photos with the dark channel prior. Free, private, in your browser.HDR Photo EffectGive any single photo an HDR look with local tone mapping, detail boost and a strength slider.Low Light Photo EnhancerBrighten dark and night photos with an adaptive tone curve plus noise reduction.Photo StackingStack photos online: star trails (lighten), noise reduction (mean) and remove passers-by (median).Photo to Oil PaintingTurn a photo into an oil painting with brush size, detail, impasto and canvas texture.Red Eye RemoverClick on red eyes to fix them automatically: adjustable threshold, undo, download the photo.Tilt Shift EffectMake photos look like miniature models with an adjustable tilt-shift focus band and blur.Colorize Black and White PhotoAdd natural color to old black and white photos with AI that runs in your browser. No upload.Draw on ImageAnnotate photos and screenshots with arrows, boxes, text, highlighter and numbered steps.Photo to AnimeTurn selfies and landscapes into anime-style art with AI in your browser. Free, no upload.Face Shape DetectorUpload a selfie to find your face shape on-device, with hairstyle and glasses tips.Add Background to Transparent PNGFill the transparent areas of a PNG with a color, gradient or photo, plus padding and shadow.Add Stickers to PhotoPut emoji and cute stickers on your photos; scale, rotate, flip and layer them, then save PNG.Color Splash EffectKeep one color, or a brushed area, in color and turn the rest of the photo black and white.Old Photo Face RestorerRestore blurry and damaged faces in old photos with AI (GFPGAN) in your browser. Free, no upload.Image Opacity ChangerMake an image semi-transparent with an opacity slider or fade, and save a transparent PNG.Photo to WatercolorTurn a photo into a watercolor painting with soft washes, color bleed, wet edges and paper texture.Product Photo White BackgroundRemove the background and center products on pure white at 2000 x 2000 for marketplaces. Batch.Redact ImageBlack out or pixelate private info in screenshots; burned in, metadata stripped, PNG download.Rubber Stamp MakerDesign round or rectangular stamps with curved text, borders, stars and grunge ink; PNG or SVG.Signature Background RemoverTurn a signature photo or scan into a clean transparent PNG: threshold, ink color, auto-crop.Skin SmoothingSmooth skin in portraits with face-aware retouching that keeps eyes, lips and skin texture sharp.Straighten ImageFix a tilted photo: rotate by any angle with a grid, auto-crop the corners or level the horizon.AI Style TransferRepaint your photo in the style of any painting or pattern with AI, right in your browser.SVG EditorEdit SVG files visually: move shapes, change colors, text and strokes, add shapes, edit the code.Symmetry Drawing ToolDraw mandalas and kaleidoscope art with radial and mirror symmetry, glow brushes and PNG export.Virtual Background MakerDesign 1920×1080 video call backgrounds with your name, title, logo, blur and branded templates.EXIF EditorEdit photo EXIF and IPTC: date taken, camera, GPS location, copyright and caption, in batch.