Hammer CalculatorDecks, Fences & Outdoor Structures
15 of 15 calculators are live. Everything else below is on the roadmap — check back as more launch.
Plan decking, fencing, pergolas, sheds, patios, and driveways with accurate material counts. These calculators cover boards, posts, footings, and hardware so your outdoor build goes smoothly from permit to final walkthrough.
Quick Tips
- Set fence and deck posts at least 1/3 of their above-ground height below grade for stability — deeper in loose or sandy soil.
- Space deck boards with a 1/8" gap for drainage and expansion; composite boards may need wider gaps per the manufacturer.
- Check your local setback and height requirements before building — fences and decks often have different rules for front vs. side yards.
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