Canvas Size Calculator
Calculate aspect ratio, area, nearest standard canvas size, and paint coverage for any canvas dimensions.
How to Use the Canvas Size Calculator
- Enter the canvas width in centimetres.
- Enter the canvas height in centimetres.
- Click Calculate to see aspect ratio, area, and paint needed.
- Use the nearest standard size to find a pre-made canvas.
Casi d'Uso
- •Estimating paint quantity before starting a painting.
- •Finding the correct aspect ratio for a composition.
- •Comparing custom canvas sizes to standard formats.
- •Planning a series of paintings with consistent proportions.
Formula
Area = Width × Height (cm²). Paint (ml) = Area / 100 × 10 ml. Aspect ratio = simplified W:H ratio.
Domande Frequenti
How much paint do I need per canvas?
A rough estimate is 10 ml per 100 cm² for one coat. Multiply by the number of coats needed.
What are standard canvas sizes?
Common sizes include A4 (21×30 cm), A3 (30×42 cm), 40×50, 50×60, 60×80, and 80×100 cm.
Is it free?
Yes, all calculators on OhMyCalc are completely free.