Home repair calculators
Pick a topic, get a real answer. 23 free calculators for plumbing, electrical, and garage door jobs. No account, no email, no generic estimate.
Plumbing 8 calculators
Leaks, toilets, water heaters, pressure, and drains.
- Faucet Repair CostDIY and professional cost by exactly what's wrong.
- What Is That Leak Costing You?A dripping faucet or running toilet, priced out by the year.
- Toilet Repair CostDIY and professional cost by exactly what's wrong.
- Water Heater SizingWhat tank size you actually need for your household.
- Water Heater LifespanHow much life is realistically left in yours.
- Water Pressure DiagnosticIs your home's PSI actually normal, low, or high.
- Drain Clog SeverityPlunger-fixable, or time to call someone.
- Low-Flow Fixture SavingsWhat switching fixtures actually saves per year.
Electrical 7 calculators
Outlets, panels, load, generators, and EV chargers.
- Outlet and Switch Repair CostDIY parts and electrician cost for outlets, GFCIs, switches, and dimmers.
- Home Electrical LoadEstimate demand in amps and see if 100, 150, or 200 amps fits.
- Generator SizingRunning and starting watts for the things you need during an outage.
- EV Charger ReadinessWill your service handle a Level 2 charger?
- Extension Cord SafetyCheck amps, voltage drop, and the gauge you need.
- Panel Age and Replacement NeedBrand, age, and warning signs checked against typical panel life.
- Panel Upgrade CostTypical cost for 100, 150, 200, and 400 amp panels plus permits.
Garage Door 8 calculators
Springs, openers, replacement, weight, and fit.
- Garage Door Repair CostSpring, opener, and sensor repair cost by exact problem.
- Garage Door Replacement CostInstalled cost by size and material, with state-adjusted labor.
- Garage Door WeightTypical weight by size and material, plus an opener hint.
- Garage Door LifespanYears left on the door, springs, and opener.
- Annual Maintenance CostTune-ups plus money set aside for springs and the opener.
- Insulated Door Energy SavingsHeating savings from an insulated garage door, for heated garages.
- Clearance and Fit CheckerHeadroom, sideroom, and backroom checked by track type.
- Opener CompatibilityHorsepower and drive type for your door.
Looking for a repair walkthrough instead? Browse the repair guides.
How these calculators work
Each calculator uses published sources, not guesses: repair costs from the Fix or Hire data and national price surveys, state labor rates from Bureau of Labor Statistics wage data, and sizing methods from the Department of Energy, the EPA, and the National Electrical Code. The sources are listed on every page, and every result is a range, not a single made-up number.
Frequently asked questions
Are the home repair calculators free?
Yes. Every calculator is free to use, with no account and no email address required.
Where do the numbers in the calculators come from?
Costs come from the Fix or Hire repair data and published price surveys. Labor is adjusted for your state with Bureau of Labor Statistics wage data. Technical methods, such as the NEC load calculation or the Department of Energy water heater worksheet, come from the published standards. Each calculator lists its sources on the page.
Are the results exact quotes?
No. They are planning estimates. Real prices depend on your home, your local market, and the individual contractor. Use the numbers to decide between a DIY fix and a professional, and to check a quote for reasonableness.
Which calculators help me decide between DIY and hiring a pro?
The repair cost calculators for faucets, toilets, outlets and switches, and garage door problems show the DIY cost next to the professional cost for your state, and flag jobs that should not be done yourself.
Last updated October 2026.