About this calculator

Most stains cover 10 m²/L on smooth wood, 6–8 m²/L on rough-sawn. Decks need 2 coats for UV protection.

Frequently asked questions

What does the Wood Stain & Varnish Coverage do?

Litres of stain or varnish for a deck, fence or piece of furniture. Most stains cover 10 m²/L on smooth wood, 6–8 m²/L on rough-sawn. Decks need 2 coats for UV protection.

Is the Wood Stain & Varnish Coverage free to use?

Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the Wood Stain & Varnish Coverage?

Results are calculated in real time using industry-standard formulas. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified woodworking & joinery professional before committing to a purchase or a job.

What inputs does the Wood Stain & Varnish Coverage need?

Enter values for: Area to stain (m²), Coverage (m²/L), Coats. Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the Wood Stain & Varnish Coverage on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.