Free Tools

Free Home Service Calculators & Tools

Plan your home improvement projects with our free calculators. Get instant estimates for HVAC, plumbing, roofing, windows, drains, and electrical work.

HVAC Tools

Calculate heating and cooling needs for your home

BTU Calculator

Calculate the BTU needed for your room or home

Manual J Load Calculator

Professional HVAC load calculation

Energy Cost Calculator

Estimate monthly heating and cooling costs

Filter Size Finder

Find the right filter size for your system

SEER Savings Calculator

Compare energy savings between SEER ratings

Plumbing Tools

Tools for plumbing projects and water usage

Water Heater Size Calculator

Find the right water heater capacity

Water Usage Calculator

Estimate your household water usage

Pipe Size Calculator

Determine the right pipe diameter

Plumbing Diagnostic Tool

Diagnose common plumbing problems

Water Pressure Calculator

Calculate water pressure needs

Roofing Tools

Calculate roofing materials and costs

Roof Area Calculator

Calculate total roof square footage

Shingle Calculator

Estimate shingles needed for your roof

Roofing Cost Estimator

Get a ballpark roofing cost estimate

Pitch Calculator

Calculate your roof pitch

Gutter Size Calculator

Determine the right gutter size

Window Tools

Calculate window efficiency and savings

Window ROI Calculator

Calculate energy savings from new windows

Window Size Calculator

Measure and calculate window sizes

U-Value Comparison

Compare window energy efficiency

Window Cost Estimator

Estimate window replacement costs

Solar Heat Gain Calculator

Calculate solar heat gain coefficient

Drain & Sewer Tools

Tools for drain and sewer diagnostics

Drain Risk Assessment

Assess your drain clog risk

Drain Size Calculator

Calculate required drain pipe size

Slope Calculator

Calculate proper drain slope

Septic Tank Size

Determine septic tank capacity needed

Problem Diagnostic

Diagnose drain and sewer problems

Electrical Tools

Calculators for electrical projects

Electrical Load Calculator

Calculate your home's electrical load

Wire Size Calculator

Determine the right wire gauge

Breaker Size Calculator

Calculate required breaker amperage

Electrical Diagnostic

Diagnose common electrical issues

EV Charger Calculator

Calculate EV charger requirements

Why Use Our Free Home Service Calculators?

Planning a home improvement project? Our free calculators help you estimate costs, determine the right equipment size, and make informed decisions before calling a professional. Whether you're replacing your HVAC system, upgrading windows, or planning a roof replacement, our tools give you the information you need.

Accurate Estimates for Better Planning

Our calculators use industry-standard formulas and real-world data to provide accurate estimates. While these tools are great for planning purposes, we always recommend consulting with a licensed professional for final specifications.

Save Time and Money

By understanding your needs before contacting a contractor, you can have more productive conversations and make better decisions. Our diagnostic tools can also help you identify problems early, potentially saving you from costly emergency repairs.