Advanced Charge Converter
Convert between Coulombs, Picocoulombs, Electron Charge, Ampere-hours and other charge units with interactive visualizations
| Unit | Name | Symbol | Equivalent in Coulombs |
|---|
Coulomb (C)
The Coulomb is the SI unit of electric charge. One Coulomb is equal to the charge transported by a constant current of one ampere in one second.
Picocoulomb (pC)
The Picocoulomb is 10⁻¹² of a Coulomb. It's commonly used to measure very small charges in applications like semiconductor devices and electrostatics.
Nanocoulomb (nC)
The Nanocoulomb is 10⁻⁹ of a Coulomb. It's often used in measurements of small static charges and in some electronic applications.
Microcoulomb (μC)
The Microcoulomb is 10⁻⁶ of a Coulomb. This unit is frequently used in capacitor measurements and electrostatic experiments.
Millicoulomb (mC)
The Millicoulomb is 10⁻³ of a Coulomb. It's used in applications involving larger charges like battery capacities and electrostatic discharge.
Electron Charge (e)
The elementary charge (e) is the electric charge carried by a single proton or electron. It's approximately 1.602×10⁻¹⁹ C, the fundamental unit of charge.
Ampere-hour (Ah)
The Ampere-hour is a unit of electric charge commonly used in batteries. One Ah equals 3600 Coulombs (1 A × 1 hour).
A Charge Converter is a tool that converts electric charge measurements between different units, such as Coulombs (C), Ampere-hours (Ah), and elementary charge (e). Electric charge is a fundamental property of matter, crucial in physics, electronics, and electrical engineering.
Common Charge Units
1. Coulomb (C)
SI Unit for electric charge.
Definition: 1 Coulomb = Charge transported by 1 Ampere in 1 second (1 C = 1 A × 1 s).
Used in: Physics, electrical circuits, electromagnetism.
2. Ampere-hour (Ah)
Practical Unit for battery capacity.
Definition: 1 Ah = 3,600 Coulombs (1 A × 1 hour).
Used in: Batteries, energy storage, EVs.
3. Milliampere-hour (mAh)
Subunit of Ah (1 Ah = 1,000 mAh).
Used in: Smartphones, laptops, small electronics.
4. Elementary Charge (e)
Charge of a single proton/electron.
Value: ~1.602 × 10⁻¹⁹ C.
Used in: Quantum physics, atomic-scale calculations.
5. Franklin (Fr) / Statcoulomb (statC)
CGS Unit (non-SI).
Conversion: 1 Fr ≈ 3.336 × 10⁻¹⁰ C.
Used in: Electrostatics (older literature).
Conversion Formulas
| From | To | Formula |
|---|---|---|
| Coulomb (C) | Ampere-hour (Ah) | |
| Ampere-hour (Ah) | Coulomb (C) | |
| Milliampere-hour (mAh) | Ampere-hour (Ah) | |
| Coulomb (C) | Elementary Charge (e) | |
| Elementary Charge (e) | Coulomb (C) | |
| Coulomb (C) | Franklin (Fr) |
Practical Examples
| Description | Coulomb (C) | Ampere-hour (Ah) | Milliampere-hour (mAh) |
|---|---|---|---|
| AA Battery (2,500 mAh) | 9,000 C | 2.5 Ah | 2,500 mAh |
| iPhone Battery (~3,000 mAh) | 10,800 C | 3 Ah | 3,000 mAh |
| 1 Electron Charge | 1.602 × 10⁻¹⁹ C | ~4.45 × 10⁻²³ Ah | - |
Applications of Charge Conversion
1. Battery & Energy Storage
Converting mAh to Wh (Watt-hours) for battery capacity.
EV battery ratings (e.g., 50 kWh = ~138,888 C).
2. Electronics & Circuit Design
Calculating charge flow in capacitors (Q = CV).
3. Physics & Research
Elementary charge calculations in particle physics.
4. Electrochemistry
Faraday’s constant (96,485 C/mol) for reaction stoichiometry.