Deck Stain Gallons Calculator
Work out stain volume for a deck, in litres and gallons, with an allowance.
Quick answer: enter your details below and click Calculate Stain — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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Enter your details below.
How to use
- Measure the deck area in square metres.
- Enter the coverage per litre from the stain packaging.
- Click Calculate Stain.
About this tool
Enter the deck area and the coverage per litre, and the tool adds a 10 percent allowance for rough timber and overlap, then converts the result to gallons. The allowance is shown separately.
Frequently asked questions
Should I stain in hot sun?
No, hot sun dries stain too fast and leaves lap marks; stain in mild, dry conditions.
What about railings and steps?
Add their area to the deck area first, since they drink stain too.