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Home tools for real-world projects.

Practical calculators that help you estimate materials, plan projects, and understand the numbers before you start.

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A practical starting point for planning your next home project.

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Paint Calculator

Estimate how much paint you need based on room dimensions, selected surfaces, coats, coverage, and waste.

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Plan before you buy.

Use HARTI home tools to turn measurements and project details into practical estimates you can use for planning.