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DIY Calculator Hub

Free precision DIY calculators for spacing, layout, board and batten, fence pickets, balusters, gravel, stone, and home improvement projects.

Free precision calculators with visual diagrams, printable cut lists, SVG downloads, and PDF plans.
12+Focused tools
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Gravel & Aggregate Users: Looking for the original Gravel Calculator? Open Gravel Calculator →

Precision Tools for Home Improvement & Building Projects

Whether you are laying out accent wall battens, spacing fence pickets, installing deck balusters, or ordering aggregate for a driveway, our tools calculate exact measurements, mark positions, and material lists.

Spacing & Layout Calculators Gravel & Aggregate Tools
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Spacing & Layout Calculators

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Board & Batten Spacing

Calculate exact batten reveals, wall corner placements, mark positions, and total linear feet for accent walls.

US & Metric Units Open Calculator
Woodworking Live Diagram & Exports →

Fence Picket Spacing

Calculate fence picket count, equal gap spacing, post exclusions, and layout marks for 6ft or custom fence runs.

US & Metric Units Open Calculator
Code Compliant Live Diagram & Exports →

Baluster Spacing

Calculate deck railing spindle count and clear gaps with automatic 4-inch max sphere safety warnings.

US & Metric Units Open Calculator

Upcoming Phase 2 Spacing Tools:

Cabinet Hardware Placement Phase 2

Center drawer pulls and knobs with exact hole spacing marks.

Gallery Wall Layout Phase 2

Calculate equal picture frame spacing and nail wall height marks.

Wainscoting Panel Layout Phase 2

Calculate shadow box panel widths and equal stile/rail margins.

Category Gateway

Gravel & Aggregate Calculators

Go to Main Gravel Calculator →

Gravel & Aggregate Main Calculator

Calculate yards, tons, bags, and cost for any gravel shape.

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Crushed Stone Calculator

Calculate crushed stone for driveways, bases, and drainage.

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Pea Gravel Calculator

Calculate pea gravel volume for walkways, patio beds, and play areas.

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River Rock Calculator

Estimate decorative river stone quantity and tonnage.

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Decomposed Granite Calculator

Estimate DG material needed for paths and patios.

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Road Base / Crusher Run

Calculate compacted aggregate base for driveways and paving.

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Measurement & Layout Guides

How to Calculate Board & Batten Spacing

Step-by-step math guide for accent wall reveals.

Understanding the 4-Inch Baluster Rule

Safety building code compliance for deck railings.

Fence Picket Spacing & Post Exclusion

How to space pickets evenly between fence posts.

How to Calculate Irregular Areas

Methods for non-rectangular project footprints.