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Free Electrical Tools — Wire Size, Load Calculator, and More

Calculate upgrade costs, check IRA credits, and size your electrical panel before calling a contractor.

Built from real pro data

Updated 2025 pricing

No account needed

ProvenQuote is a local services marketplace that builds free tools to help you make informed decisions before hiring a professional. These Electrical calculators are built for consumers — no account required, no upsell, just accurate estimates based on real electrical contractor and utility data. Every tool is updated annually with current pricing and efficiency standards.

After using these tools, you can request a free quote from ProvenQuote’s exclusive, verified Electrical professional for their city. One pro per market — no lead-sharing, no bidding wars. Find your city →

Cost Estimators

Popular

Electrical Panel Upgrade Cost Calculator

Estimate the cost to upgrade from 100A to 200A or 400A service based on your home size, current panel brand, and local permit requirements.

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New

EV Charger Installation Cost Calculator

Get a cost estimate for Level 2 EV charger installation based on your panel distance, existing wiring, and charger brand. Includes IRA 30% credit savings.

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Savings Tools

Save Money

IRA Electrical Tax Credit Calculator

Calculate your federal IRA tax credits for EV charger installation (Section 30C, up to $1,000) and panel upgrade (Section 25C, up to $600). Stack both in one year.

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Diagnostic Tools

Circuit Breaker Load Calculator

Calculate how much electrical load your home currently has and whether your panel can support added circuits for an EV charger, hot tub, or home addition.

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Safety Tools

Smoke & CO Detector Placement Guide

Interactive guide showing where to place smoke detectors and CO detectors based on your home layout. Includes Austin Fire Code requirements.

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GFCI/AFCI Outlet Requirements Checker

Find out which outlets in your home are required to be GFCI or AFCI protected under NEC 2023, and whether your home is up to code.

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Permit Guides

Electrical Permit Cost Guide

Look up permit requirements and estimated fees for common electrical work: panel upgrades, EV charger installation, whole-home rewire, and new circuits.

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Know the numbers before you talk to a pro

The information gap between homeowners and pros is real — but it's fixable. These tools give you the same benchmarks the industry uses, so you can ask better questions and spot a bad quote.

Estimate panel upgrade cost before getting quotes
Calculate EV charger installation cost including IRA credits
Know if your panel can support new circuits
Understand permit requirements before hiring an electrician
Verify your home meets NEC 2023 safety code

Electrical Quick Reference

Average panel upgrade cost (Austin)$1,500–$4,000

IRA EV charger credit (Section 30C)Up to $1,000

Austin Energy EV rebateUp to $1,500

Doing it yourself?

These guides walk through what pros look for — helpful before hiring or if you're DIYing.

Austin TX Electrical Hub Electrical Cost Guide Electrical Incentives Guide

Frequently Asked Questions

Are these electrical tools free?

Yes — all tools are completely free. No account required.

What size panel does my home need?

Most homes built before 1990 have 100-amp service. Modern homes with EV chargers, heat pumps, and electric appliances typically need 200-amp service. Homes over 3,500 sq ft with multiple EVs may benefit from 400-amp service.

Can I combine the EV charger credit and panel upgrade credit?

Yes. IRS Section 30C (EV charger, up to $1,000) and Section 25C (panel upgrade as part of energy efficiency, up to $600) are separate credits and can be claimed in the same tax year on the same property.

Do I need a permit for EV charger installation in Austin?

Yes. The City of Austin requires an electrical permit for all EV charger installations. Your licensed electrician should pull the permit — if a contractor offers to skip the permit, that is a red flag.

These tools are built for anyone planning a project. Professionals have their own suite on ProvenQuote.ai.

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This page covers

electrical calculatorpanel upgrade cost calculatorEV charger installation costIRA electrical tax creditcircuit breaker load calculatorfree electrical toolselectrical permit cost guideGFCI requirements checker

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