Free painting resources

Plan your painting project before asking for a quote

Estimate paint quantities, prepare a clear scope and compare contractor estimates. These tools are free, require no signup and never send your entries to us.

Free paint quantity calculator

Estimate paint for one rectangular room. Enter interior measurements in metres. This is a material planning tool, not a labour price or a binding quote.

Room length (m)Room width (m)Wall height (m)Number of coats (1–5)Coverage per litre (m²/L)Waste allowance (%)

Estimated paint required

Walls: 7.4 L (33.6 m²)

Ceiling, if included: 2.6 L (12.0 m²)

Walls = 2 × (length + width) × height. Ceiling = length × width. Litres = area × coats ÷ coverage × (1 + waste/100). Walls and ceilings are separate; do not add ceiling litres if you are not painting it.

Example inputs are editable assumptions, not verified product specifications. Check your paint manufacturer’s actual spread rate. Openings, trim, texture, porous surfaces, primer, spills and extra coats can change quantities. Round up to available can sizes only after checking the product.

Understand what affects painting cost

Free painting estimate comparison checklist

Use this before an estimate visit or when comparing written proposals. Check items as you go; print or save the page from your browser. No email or signup is required.

List every room or exterior surface and whether ceilings, trim, doors and closets are included.
Note cracks, peeling, stains, moisture or damaged substrate for assessment.
Record colour changes and which surfaces may need primer.
Identify furniture protection, access, parking, lifts or occupied-space restrictions.
Ask each painter to specify preparation, primer, coat count and product line.
Compare inclusions, exclusions, GST, cleanup, schedule, warranty and payment terms.
For commercial work, note business hours, tenant access, staging and insurance requirements.

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Ready for a professional assessment? Request a free painting quote. We review requests first and contact an appropriate painter manually if one is available.

For more detail, read our estimate preparation guide and questions to ask a painter.