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Commercial load calculations that save time

Drop the clunky worksheets and move faster from bid to build. Complete commercial load calculations with confidence and get code-compliant reports for every occupancy type.

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Commercial load
calculations that save time

Drop the clunky worksheets and move faster from bid to build. Complete commercial load calculations with confidence and get code-compliant reports for every occupancy type.

Get Started ->Try residential free
Create commercial load calculations with confidence
Fast
Kopperfield saves you time with with an easy-to-use interface and automatic calculation logic
Compliant
Our load calculator adheres to NEC Article 220 to help with fast approvals and inspections
Mobile friendly
Kopperfield’s mobile app makes it easy to create, edit, and share calculations from the field

Fast and easy data entry

Easily calculate load VA from amperage or breaker size. Speed up data entry with our equipment library.

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Automatic demand factors

Get accurate results with automatic application of demand factors based on commercial occupancy type.

Professional PDF generation

Win faster approvals and impress clients with instant, professional PDF reports of your commercial load calcs.

NEC compliance assistance

Get a visual warning if your selected equipment has an NEC minimum and the entered VA value is too low.

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Trusted by 1000s of electricians and contractors

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Our free load calculator is limited to 2 free uses. Get more out of your load calcs when you subscribe.
Unlimited load calcs
Branded templates
Custom default values
Team collaboration

Historic record of all calcs

AI-powered panel photo
detection

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Commercial load calculation common questions

Is there a free trial available?

What occupancy types are included in the commercial load calculator?

Where are the default values drawn from?

What nominal voltage options are available in the commercial load calculator?

Who is this tool made for?

Do you have other tools for commercial projects?

Where can I get help with the commercial load calculator?

A quicker and easier way to do commercial load calcs

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