# Coulomb's Law Calculator — Particles Electrostatic Force

> Particles Electrostatic Force (iPhone/iPad app by Nitrio.)

- Source: https://appshunter.io/ios/app/coulombs-law-calculator/id1425576265 (this page in markdown: same URL + `.md`)
- Developer: [Nitrio](https://appshunter.io/developer/321121189)
- Category: Utilities, Productivity
- Price: $2.99
- Age rating: 4+
- Requires: iOS 13 · 1 MB
- Languages: American English
- Released: 2018-08-21
- Data updated: 2026-06-01
- User reviews in markdown: https://appshunter.io/ios/app/coulombs-law-calculator/id1425576265/reviews.md

## What is Coulomb's Law Calculator?

Coulomb's Law Calculator is a physics/math calculator used to find particle charge 1, particle charge 2, distance between particles, or electrostatic force between two charged particles quickly and easily.

Features:
- Instant calculation.
- Results are copyable to other apps.
- Formulas are included as references.
- Supports up to 16 decimal places.
- Supports various units for each input.
- Works seamlessly on both iPhone and iPad.
- Lightweight, compact app optimized for everyday use.
- Ad-free and built with privacy in mind.

Coulomb's law, or Coulomb's inverse-square law, is a law of physics that quantifies the amount of force with which stationary electrically charged particles repel or attract each other.

Coulomb's law states that the magnitude of the electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them.

Coulomb's Law Formula:

F = Ke * q1 * q2 /r²

where:
F - electrostatic force between charges (in Newtons)
q1 - magnitude of the first charge (in Coulombs)
q2 - magnitude of the second charge (in Coulombs)
r - shortest distance between the charges (in m)
Ke - Coulomb's constant. 9.988 * 10^9 N * m² / C².


## Version history (last 4 releases)

### 1.3 — 2026-03-12

- Updated for the newest devices.
- Minor bugs fixed.

### 1.2 — 2024-04-30

- Updated for the newest devices.
- Minor UI update.
- Minor bugs fixed.

### 1.1 — 2021-02-11

- Update for Newest Devices
- Bug Fixed

### 1.0 — 2018-08-21

No release notes.

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All apps by Nitrio: https://appshunter.io/developer/321121189

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*