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Instructions:

  1. Review the methodology below to make sure it aligns with your project's requirements.

  2. Enter two input values: Voltage, Current, Resistance, and Power. 
    Entering more than two input values will cause the results to be unreliable. 

  3. Click the Calculate Button, and the results will appear in the Results table. 

Methodology:

I = V/R                      V = sqrt (PxR)

I = P/V                      V = P/I

I = SQRT (P/R)         V = IxR

P = VxI                        R = V/I

P = I^2R                    R = V^2/P

P = V^2/R                 R = P/I^2

Ohms Law
Image showing Ohms Law Equations
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This Ohm's Law with Power Calculator determines Power, Voltage, Current, and Resistance using Ohm's Law, a fundamental principle in electrical engineering.

Ohm's Law with Power Calculator

 

©2014-2025 by Adicot, Inc.

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Adicot, Inc.'s calculators are intended for professionals. Adicot, Inc. makes no warranty of any kind, expressed or implied, concerning the information contained on this website. The information presented on this website shall be used by professionals who understand the implications of the results. If professional services are required, please consult a licensed professional engineer in your location, as building codes differ based on differing jurisdictions. The author and publisher shall not be liable in the event of damages of any kind in connection with, or arising from, the use of the information contained within this website.  Any use of this website, including the calculators, is at the user’s sole risk. Use of the website, including the calculators, in any way shall constitute an acknowledgment and acceptance of the foregoing.

​The calculators' accuracy is dependent on user-supplier data. It is the user's responsibility to understand how the data entered affects calculator output. The calculation results are meant to aid the designer and are not a substitute for professional design service, judgment, or experience. The user accepts all responsibility for any claims, actions, or damages from using the calculators.

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