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Electrostatic Force Calculator

Signed Coulomb force = ke × q1 × q2 / distance². Point charges in vacuum.

Free to useNo sign-upRuns in your browser
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Enter the inputs, then select Calculate.

Your result
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Result will appear here

How Electrostatic Force Calculator works

Signed Coulomb force = ke × q1 × q2 / distance².

Point charges in vacuum. Positive means repulsion; negative means attraction. ke = 8.9875517923 × 10⁹ N·m²/C². Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.

Concept diagram for Electrostatic Force Calculator, showing first charge (c) input and the supported output.
Concept diagram; the three operation images are actual browser captures.

How to use Electrostatic Force Calculator

Follow the labelled inputs.

Enter first charge (c)

Replace the example with first charge (c). The field labels specify the expected format and units.

Input and settings
Electrostatic Force Calculator: input and settings in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Check the remaining inputs

Set second charge (c), separation (m). Point charges in vacuum.

Tool result
Electrostatic Force Calculator: tool result in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Run, review and save

Select Calculate. Review the calculated result, then copy it or download the result text.

Review the details
Electrostatic Force Calculator: review the details in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Examples and uses for Electrostatic Force Calculator

Check the supplied example

The starting example produces 0.0179751035846 N. Signed Coulomb force = ke × q1 × q2 / distance².

Abstract input values and a mathematical worksheet.
Start with the values. Concept illustration.

Use your own inputs

Read the labels for first charge (c) and second charge (c), separation (m). Point charges in vacuum.

Two calculation examples shown for comparison.
Compare a second example. Concept illustration.

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.

A calculation and supporting explanation represented conceptually.
Explain the calculation. Concept illustration.

How to read the result

Read the units and assumptions with the output.

Signed Coulomb force = ke × q1 × q2 / distance².

Point charges in vacuum. Positive means repulsion; negative means attraction. ke = 8.9875517923 × 10⁹ N·m²/C². Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.

A mathematical result connected to the values used to calculate it.
Read the result with its inputs. Concept illustration.

Supported input and limits

Check the stated scope before you run it.

Point charges in vacuum. Positive means repulsion; negative means attraction. ke = 8.9875517923 × 10⁹ N·m²/C². Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.

The input stays in this browser. Copy result and Download save the same displayed text.

Values and units reviewed before relying on a mathematical result.
Check values and units. Concept illustration.

Electrostatic Force Calculator: common questions

Answers about using Electrostatic Force Calculator and understanding its results.

What assumptions and input limits apply?

Point charges in vacuum. Positive means repulsion; negative means attraction. ke = 8.9875517923 × 10⁹ N·m²/C². Finite real inputs; output uses up to 12 significant digits. Floating-point results may be rounded.

How can I save the output?

Use Copy result to copy the displayed text, or Download to save it as a text file. The tool runs in your browser and does not require an account.

Calculate with your input

Check the calculated result, then copy or download it.

Calculate