Creative Block Murals — Spray Can Calculator

1 Upload your mural design

Drag & drop an image here, or tap to choose a file

Use the cleanest version of your design you have (flat color reference, sketch, or rendering). Photos of a rough wall in progress work too, but a clean digital design gives more accurate color matches.

2 Wall & settings

Wall width (ft)

Wall height (ft)

Total area (sq ft) — auto, or override

Match colors against

Montana Gold MTN 94

Number of colors to detect: 8

Coats / layers

Buffer for touch-ups (%)

Coverage per can — solid fill (sq ft)

Ignore near-white background pixels

Coverage per can is a starting estimate for a single solid coat at typical mural distance — spray technique, wall texture, and color opacity (see chart star ratings) all change real usage. Adjust this number based on your own experience once you've run a few jobs, and I can update the default for next time.

3 Analyze

Results — matched Montana Gold cans needed

		Brand	Code	Color	% of design	Sq ft	Cans
Total cans

Need pricing?

Paste the copied list into your chat with Claude and ask for the cheapest current prices — Claude will do a live web search for exact cans and send you links (this tool doesn't shop live on its own, so prices stay accurate to the day you ask).