Ω
Ohm's Law Calculator
V = I × R. Solve for any of voltage, current, or resistance given the other two. Plus power (P = VI) calculation.
MATHV = I × R. Solve for any of voltage, current, or resistance given the other two. Plus power (P = VI) calculation.
Detailed instructions, formula notes, and US-context guidance shown in the calculator above.
Disclaimer: Estimate only. Consult a qualified professional for decisions with major financial, legal, or health consequences.
Ohm's Law Calculator
V = I × R. Enter any 2 to solve the third. Plus power P = V × I.
Results
Voltage12.0000 V
Current0.120000 A
Resistance100.0000 Ω
Power1.4400 W
Frequently Asked Questions
What is the Ohm's Law Calculator for?
V = I × R. Solve for any of voltage, current, or resistance given the other two. Plus power (P = VI) calculation.
How do I use the Ohm's Law Calculator?
Detailed instructions, formula notes, and US-context guidance shown in the calculator above.
How accurate are my ohm's law results?
Estimate only. Consult a qualified professional for decisions with major financial, legal, or health consequences.
Is the Ohm's Law Calculator free to use?
Yes - every calculator on WhichCalc is completely free with no signup, no usage limits, and no tracking on the calculation itself. Results display instantly in your browser and your inputs are never sent to a server. Bookmark the page if you use this calculator regularly.