C2C Crochet Pattern Maker
Create a corner-to-corner crochet chart from a photo, logo or simple motif. Each chart square represents one C2C block, not one individual stitch. Reduce the palette, edit the colours and follow written colour sequences along alternating diagonals from the bottom-left corner. Check the finished size using your own block gauge, then download a PDF chart with the diagonal instructions. Free in your browser, with no account needed.
Drop image or click to upload
JPEG, PNG, or WebP
Converted in your browser — your image is never uploaded
Transparent or erased cells use this colour. Every square is a C2C block. Changing it also replaces blocks that use the previous background colour.
Templates
Click a template to load it into the tool above
How to turn a picture into a C2C crochet pattern
Upload a clear image
Choose a photo, logo or motif with distinct shapes. Set the chart width in blocks and choose a small enough palette to manage while crocheting.
Convert and edit the chart
Generate the colour grid, then tidy small details and isolated colours in the editor. Every square will become one complete C2C block.
Check gauge and diagonal order
Enter your measured block gauge to review the finished size. Read the C2C instructions from the bottom-left corner and check the alternating diagonal directions.
Download and crochet
Export the PDF chart and written diagonal instructions. Prepare your yarn colours and use your preferred C2C stitch technique to work the colour plan.
Features
Photo to C2C chart
Upload an image and turn it into a grid of coloured blocks. Bold shapes and clear colour areas usually read better than fine lettering or tiny photo details.
Alternating diagonal instructions
Read colour runs in C2C order from the bottom-left corner, reversing direction on each diagonal. The instructions show increases and decreases at each end, including mixed shaping for rectangles.
Editable block colours
Choose a colour and edit individual chart cells to simplify outlines, clean up stray colours or match the yarn you already have.
A manageable yarn palette
Limit the number of colours before converting. Fewer shades can make colour changes and bobbin management easier without losing the main subject.
Size from your block gauge
Measure a C2C swatch and enter blocks across and block rows over the selected measurement. The size estimate counts whole blocks, not the stitches inside them.
Printable chart and instructions
Export a PDF with the colour chart, legend and written diagonal sequences. Keep a copy beside your work rather than relying on the browser alone.
What is corner-to-corner crochet?
Corner-to-corner crochet, usually called C2C, builds fabric in diagonal rows of small blocks. You start at a corner, add blocks to grow the piece, then shape the remaining edges with decreases. A chart square is one complete block. The chains and crochet stitches that make that block depend on the C2C technique you choose; this tool gives the colour layout, not a full stitch tutorial.
This chart is read from the bottom-left corner toward the top-right, with the reading direction alternating on each diagonal as the work is turned. A chart that is W blocks wide and H blocks high has W + H − 1 diagonals. A rectangle can have several diagonals with the same number of blocks between the growing and shrinking sections. Equal diagonal lengths do not mean that you stop shaping the edges: follow your chosen rectangular C2C technique for those turns.
The number of chart cells determines the number of C2C blocks, not an exact yarn length. Yarn weight, hook size, tension, block construction, colour changes and borders all affect the finished project. Make a swatch in your actual yarn, measure its block gauge and test the colours together before committing to a blanket-sized chart. Allow extra yarn for ends, swatching and your finishing choices.
More Pattern Tools
Frequently Asked Questions
Does one square mean one stitch?▾
No. One chart square means one complete C2C block. A block contains several stitches and chains according to the technique you use. Written colour counts are block counts; for example, three blue means three blue blocks, not three individual crochet stitches.
Where do I start reading the chart?▾
Start at the bottom-left corner. Work through the numbered diagonals in order, alternating direction each time. The written instructions group consecutive blocks of the same colour so you can follow the colour sequence without reading the chart as horizontal rows.
Can I make a rectangular C2C pattern?▾
Yes. The image chart can be rectangular. Its diagonals grow, can remain the same length for a middle section, and then shrink. Mixed shaping means increasing at one edge and decreasing at the other; follow your rectangular C2C method for those turns.
How do I estimate the finished size?▾
Crochet a swatch using the same yarn, hook and block technique as your project. Measure blocks across and block rows over the selected gauge measurement and enter those values. Use block counts, not individual stitch counts. Borders and changes in tension can alter the finished measurements.
Will it tell me exactly how much yarn to buy?▾
No exact yarn quantity is guaranteed. Colour totals describe the chart, while actual yarn use depends on your swatch, yarn, hook, joins and ends. For a practical estimate, measure yarn used in a sample of blocks, compare it with the chart colour counts and add a suitable allowance.
Can I edit the colours and print the pattern?▾
Yes. Adjust the palette and edit chart cells before exporting. The PDF includes the chart and written C2C diagonal colour instructions. Check the starting corner and the final colour choices before printing or beginning the project.
Is this a free C2C pattern maker?▾
Yes. Convert images, edit the chart and export a PDF without an account. Image conversion runs in your browser. Download the pattern before leaving so you have the chart and instructions available when you crochet.