Hookes Law Calculator
Restoring force in newtons = − spring stiffness × displacement.
Open toolOhms Law Calculator
Current in amperes = voltage / resistance. An ideal ohmic resistor with positive resistance; no AC phase, temperature or non-ohmic device model.
Free to useNo sign-upRuns in your browser
Enter your details
Enter the inputs, then select Calculate result.
Your result
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Result will appear here
How Ohms Law Calculator works
Current in amperes = voltage / resistance.
An ideal ohmic resistor with positive resistance; no AC phase, temperature or non-ohmic device model. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding.
How to use Ohms Law Calculator
Follow the labelled inputs.
Enter voltage (v)
Replace the example with voltage (v). The field labels specify the expected format and units.
Input and settings
Check the remaining inputs
Set resistance (ω). An ideal ohmic resistor with positive resistance; no AC phase, temperature or non-ohmic device model.
Tool result
Run, review and save
Select Calculate result. Review the calculated result, then copy it or download the result text.
Review the details
Examples and uses for Ohms Law Calculator
Check the supplied example
The starting example produces 3 A. Current in amperes = voltage / resistance.
Use your own inputs
Read the labels for voltage (v) and resistance (ω). An ideal ohmic resistor with positive resistance; no AC phase, temperature or non-ohmic device model.
Record a reviewed result
Copy the calculated result into your notes. Keep the formula and assumptions with it if someone else needs to reproduce the calculation.
How to read the result
Read the units and assumptions with the output.
Current in amperes = voltage / resistance.
An ideal ohmic resistor with positive resistance; no AC phase, temperature or non-ohmic device model. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding.
Supported input and limits
Check the stated scope before you run it.
An ideal ohmic resistor with positive resistance; no AC phase, temperature or non-ohmic device model. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding.
The input stays in this browser. Copy result and Download save the same displayed text.
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Open toolOhms Law Calculator: common questions
Answers about using Ohms Law Calculator and understanding its results.
Which inputs does this tool accept?
An ideal ohmic resistor with positive resistance; no AC phase, temperature or non-ohmic device model. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding.
Can I copy or download the result?
Yes. Copy result copies the displayed text, and Download saves the same result as a text file. Calculations run in your browser without an account.
Calculate result with your input
Check the calculated result, then copy or download it.