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Software Downloads

New versions of the software, updated April 26th 2016; software updates of the Conductors Ampacity Calculators reflect NEC 2011 and CEC 2015.

Easy Download and Setup:

If upgrading, please read software upgrades instructions.
  1. Click on the links below to download and save each tool.
  2. Open downloaded folders or unzip them if necessary.
  3. Run the setup.exe file by double-clicking.

Electrical Calculator

Software Download Electrical_Calculator.zip 1.4MB Freeware (Updated April 2016)

Lighting Calculator Calculator

Software Download Lighting_Level_Calculator.zip 1.4MB (Updated April 2016)

Voltage Drop Calculator

Software Download Voltage_Drop_Calculator.zip 1.4MB (Updated April 2016)

Underground Conductors Ampacity Calculator

(FKA Underground Cable Ampacity Calculator)

Software Download Underground_Ampacity.zip 1.2MB (Updated April 2016)

Conductors Ampacity Calculator - CEC Canada

(FKA Cable Ampacity Calculator - CEC Canada)

Software Download Conductors_Ampacity_CEC.zip 795kB Freeware (Updated April 2016)

Conductors Ampacity Calculator - NEC U.S.

(FKA Cable Ampacity Calculator - NEC U.S.)

Software Download Conductors_Ampacity_NEC.zip 796kB Freeware (Updated April 2016; reflects 2011 NEC)


Softpedia 100% Clean Software Award

System Requirements:

PC running Microsoft® Windows® 95, 98, ME, 2000, XP, 7, 8, 10 (32/64 bit OS).
(As of April 2016)



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Users Write

"I used to make myself coffee before doing these calculations."

"I've used this calculator for voltage drop on and off for about a year now...I highly recommend it."

"Now I've got time to focus on things that matter."

Media Reviews

"Electrical Calculator proves to be a useful and reliable application whose main purpose is to provide electrical engineers with the right tools when calculating the secondary transformer voltage and the transformer impendence coefficients." – Softpedia

"NEC Ampacity Calculator is an efficient piece of software ... dedicated to users that have an idea about electrical systems." – Softpedia