Free Home Improvement Tools & Resources

HomeGear Guide provides free calculators, checklists, comparison tools and planning resources to help U.S. homeowners make informed decisions for home improvement, maintenance, and repair projects. Each tool includes clear formulas, explanations, and limitations so you can use the results with confidence.

Calculators

Interactive tools that compute values based on your inputs — from generator sizing to attic ventilation.

Featured

Pressure Washer PSI Calculator

Find the right PSI and GPM combination for your specific pressure washing task — from car washing to concrete cleaning.

Use Tool

Featured

Generator Size Calculator

Add up running and starting watts for your essential appliances to determine the right generator size for your home.

Use Tool

Featured

Attic Ventilation Calculator

Determine the correct net free ventilation area (NFA) for your attic using the 1:300 rule, plus intake and exhaust balance.

Use Tool

Checklists

Step-by-step checklists that help you stay organized and avoid missing critical steps.

Featured

Home Maintenance Checklist

A seasonal home maintenance checklist with monthly, seasonal and system-by-system tasks for U.S. homeowners. Filter by climate, home type, and track your progress.

Use Tool

Reference Guides

Quick-reference charts and guides with specs, standards, and recommended values from authoritative sources.

Featured

Home Insulation R-Value Guide

Find recommended R-values for your climate zone — attic, walls, floors, and basement — based on DOE guidelines.

Use Tool

Engineering Roadmap

Upcoming Planning Tools in Development

Under our strict editorial guidelines, HomeGear Guide only publishes calculators with transparent, user-entered unit pricing and verifiable formulas. We never publish fabricated contractor bids or unsubstantiated regional quotes. The following homeowner tools are currently undergoing engineering verification:

Roof Repair & Coating

Pitch slope multipliers, square footage, and user-entered gallon rates.

Attic Insulation Quantity

DOE climate zone R-values and blown-in bag yield estimates.

Backup Power Planning

Equipment capacity, transfer switch, and running wattage balance.

Bathroom Accessibility

Walk-in tub, grab bars, and curbless shower planning worksheets.

About These Resources

Our tools and resources are designed to provide standalone utility for homeowners planning DIY projects, comparing products, or estimating material needs. Each calculator explains its formula, assumptions, and limitations. Reference guides cite authoritative sources where applicable. These tools do not replace professional inspection, engineering advice, or building-code requirements — always consult qualified professionals for projects involving structural, electrical, or plumbing work.