Coulomb's law force
ClientF = k|q1q2|/r² with k ≈ 8.99×10⁹—enter q1,q2,r as |q| in C and r in m.
F ≈ 1.7975e+0 N
Nearby workflows on Toolcore
- Inverse square law — Intensity ∝ 1/r² from source strength and distance. when units or numeric output should be checked on a related calculator.
- Force F = ma — Newton's second law—force from mass and acceleration. when units or numeric output should be checked on a related calculator.
- Math expression evaluator — Evaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables. when units or numeric output should be checked on a related calculator.
- Ohm's law calculator — Solve V=IR—enter two values as V,I,R comma list. when units or numeric output should be checked on a related calculator.
About this tool
Electrostatic force magnitude between point charges.
Common use cases
- Coulomb's law force for quick local checks without uploading data.
- Copy results into tickets, docs, or classroom notes.
Common mistakes to avoid
Unexpected input shape
See the intro and how-to notes for accepted formats.
FAQ
Is processing local?
Yes—this runs entirely in your browser.
Agent prefill?
Use q or qb for the main text field when supported.
More tools
Related utilities you can open in another tab—mostly client-side.
Inverse square law
ClientIntensity ∝ 1/r² from source strength and distance.
Force F = ma
ClientNewton's second law—force from mass and acceleration.
Math expression evaluator
ClientEvaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables.
Ohm's law calculator
ClientSolve V=IR—enter two values as V,I,R comma list.