Deck & Terrace Paint Area Calculator

Estimate paintable area and paint quantity for decks and terraces. Use a single rectangle, add multiple zones, or input a known area. Switch ft/m, set deck type, gaps, edges, railing, coats, waste, primer, and copy a shareable URL.

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The copied URL contains your inputs so you can reopen or share the same scenario.

Net paintable area 0 m²
Total paint 0 L
Net area includes your surface detail, gap, and railing area.
How to use 1) Pick a mode: one rectangle, multiple zones, or known area. 2) Choose deck type, surface detail, gaps, add railing, then set coats, primer, waste, and coverage. 3) Review area, paint liters/gal, suggested cans, then copy the URL.
Unit system

Switching units also converts the numbers you have entered.

Measure the deck length and depth. Subtract cut-outs like planters or hatches.

Deck details
Paint settings
Advanced coverage overrides

Enter coverage shown on the can to override presets. Leave blank to use typical values for the finish/substrate.

Processing stays in your browser. Start with the sample values and adjust before ordering paint.

Rectangular floor area0
Effective floor area0
Railing/trim area0
Total deck area (incl. railing)0
Net paintable area0
Topcoat needed0
Primer needed0
Total paint0
Suggested cans

    Net area applies your surface detail factor, board gap, and added railing area.

    Notes & FAQ

    How should I estimate board gaps?

    Most decks use 3–8 mm gaps, which equals about 5–10%. Leave gap at 0% for concrete or tile terraces.

    When should I use primer?

    Turn on primer for bare wood or porous concrete. For recoats with self-priming paints, disable primer or set coats to 0 if the product label allows.

    How do I include railing or steps?

    If you know the railing height and run, multiply them and enter the area here. For detailed pickets/rails, estimate in the Fence Paint calculator and paste the paintable area.

    Comments

    Share tips for staining or painting decks and terraces.