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See why thousands are
choosing Kopperfield

Don’t take our word for it. See what professionals across the country are saying about using Kopperfield for their business.

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“It was super fast and easy — took me about 10 to 15 minutes to get everything ready for the proposal. Really quick, it was great.”

Justin, Business owner

Trusted by contractors nationwide

“I love this program, makes doing permitting so much easier and load counts and many more things to do I'm still learning. It is a must have great program.”

Vito, electrician

“The Kopperfield tool helps with load calculations and avoids common mistakes [...]. I refer Kopperfield’s tool to contractors I work with.”

Reina, city electrical inspector

“Used your load calc tool for an ADU project where the city required load calcs and meter sizing. Your tool was helpful in determining the amperage requirements.”

Adam, draftsperson

“I was under the gun to get a load calculation for a generator project and found your website. Load calcs are a pain but your tool was very helpful.”

Daniel, electrical contractor

“Our office uses Kopperfield load calcs, single line and site plan templates everyday and it saves us a ton of time and they look great."

Brian, contractor

"Typically took around 2 weeks of back and forth to have an approved permit, this time it was less than 48 hours. These tools truly are invaluable."

Lee, business owner

"Kopperfield has helped me cut time on my estimates, line diagrams, and finding an exact code reference in my work. Well worth the money."

Conrad, EVSE specialist

“I really love the freaking load calculator.”

Perry, electrical contractor

“I do a lot of EV charger installs, and getting permits can be a hassle. Your tool sped up the process. I liked how simple it was to use, and I’ve already used it a couple of times.”

Jorge, electrical shop owner

“I could quickly select the correct kilowatt rating and have everything pop up in the tool. It made calculating load fast and gave a nice looking page to send to a customer.”

Jessica, shop owner

"The program is a great asset and tool for electrical!"

Garrett, contractor

"Nice and easy-to-use."

Daniel, project manager

"I can definitely say Kopperfield is next level. These tools are really insane and so many customizable templates."

Isaac, business owner

“Excellent product! Ease of use and great recommendations for new product enhancements are making my workload that utilizes these tools a breeze."

Mark, service manager

“It was super fast and easy— took me about 10 to 15 minutes to get everything ready for the proposal. Really quick, it was great.”

Justin, electrical shop owner

“As soon as I used the load calc tool I could see why you called it Kopperfield, because it’s like magic!”

Tim, electrical shop owner

“The power company now requires load calcs for everything. I used to do them by hand, but after finding your site, I gave it a try. It’s definitely easier and saves time.”

Joe, electrical contractor

"A very intelligent piece of software: well thought out and programmed. I've never had a glitch with it in over 30 load calculations. Looks like a very well run company."

George, business owner