⚡ Electric Charge Converter

Convert between electric charge units for physics and electronics

📋 General
🔄 Converter
🧮 Calculator
💡 Examples
📖 Guide
🎯 Professional Electric Charge Converter
⚡ Electric Charge Units
Convert between all common electric charge units used in physics and electronics.
  • Coulomb (C) - Base SI unit
  • Ampere-hour (Ah) - Battery capacity
  • Milliampere-hour (mAh) - Small battery capacity
  • Faraday (F) - Electrochemical equivalent
  • Elementary charge (e) - Fundamental unit
🔋 Battery Applications
Essential for battery capacity calculations and energy storage systems.
  • Battery capacity analysis
  • Energy storage calculations
  • Electrochemical processes
  • Current-time relationships
  • Device runtime estimation
🔬 Scientific Applications
Critical for physics research, electrochemistry, and electrical engineering.
  • Electrolysis calculations
  • Particle physics experiments
  • Electroplating processes
  • Capacitor charge calculations
  • Ion beam analysis
🔋
Battery Capacity
Convert mAh to coulombs
Try Example
⚗️
Electrochemical
Work with faraday units
Try Example
🔌
Capacitor Charge
Calculate stored charge
Try Example
⚛️
Elementary Charge
Fundamental charge units
Try Example
🔄 Electric Charge Unit Converter
🚀 Quick Conversions
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🧮 Electric Charge Calculators
⏱️ Current-Time Charge Calculator
Q = I × t (charge = current × time)
Q = I × t
🔌 Capacitor Charge Calculator
Q = C × V (charge = capacitance × voltage)
Q = C × V
🔋 Battery Runtime Calculator
Runtime = Battery Capacity / Load Current
Runtime = Capacity / Current
⚗️ Electrolysis Calculator
Q = n × F (charge = moles × faraday constant)
Faraday constant (F) = 96,485.332 C/mol
Q = n × z × F
⚛️ Coulomb's Law Force Calculator
F = k × q₁ × q₂ / r²
Coulomb constant (k) = 8.988 × 10⁹ N⋅m²/C²
F = k × q₁ × q₂ / r²
💡 Electric Charge Conversion Examples
Basic Unit Conversions
1 Ah = 3,600 C
1 Ah = 1,000 mAh
1 F = 96,485.332 C
1 C = 6.242 × 10¹⁸ e
Battery Capacity Examples
Smartphone Battery: 3,000 mAh = 10,800 C
Car Battery: 60 Ah = 216,000 C
AA Battery: 2,500 mAh = 9,000 C
Laptop Battery: 4.4 Ah = 15,840 C
Current-Time Example
Given: I = 2A, t = 3 hours
Q = 2 × 3 = 6 Ah
Q = 6 × 3600 = 21,600 C
Capacitor Charge Example
Given: C = 1000μF, V = 12V
Q = 0.001 × 12 = 0.012 C
Q = 12 millicoulombs
Battery Runtime Example
Given: 2000mAh battery, 50mA load
Runtime = 2000 / 50 = 40 hours
Continuous operation time
Electrolysis Example
Given: 0.1 mol Cu²⁺ ions
Q = 0.1 × 2 × 96485 = 19,297 C
Charge needed for deposition
🔬 Important Physical Constants
Constant Symbol Value Unit Application
Elementary charge e 1.602176634 × 10⁻¹⁹ C Fundamental charge unit
Faraday constant F 96,485.332 C/mol Electrochemistry
Coulomb constant k 8.9875517873681764 × 10⁹ N⋅m²/C² Electrostatic force
Avogadro number Nₐ 6.02214076 × 10²³ 1/mol Particle counting
Electric permittivity ε₀ 8.8541878128 × 10⁻¹² F/m Electric field calculations
📖 Electric Charge Conversion Guide
🎯 What is Electric Charge?
Electric charge is a fundamental property of matter that causes it to experience electromagnetic forces. It's measured in coulombs (C) in the SI system.
  • Coulomb (C) is the SI base unit
  • Positive and negative charges exist
  • Charge is conserved in isolated systems
  • Quantized in multiples of elementary charge
🔋 Battery Applications
Battery capacity is commonly measured in ampere-hours (Ah) or milliampere-hours (mAh), representing total charge storage.
  • 1 Ah = 3,600 C (coulombs)
  • mAh commonly used for small devices
  • Capacity determines runtime
  • Temperature affects actual capacity
⚗️ Electrochemical Applications
The faraday is used in electrochemistry to relate charge to the amount of substance in chemical reactions.
  • 1 F = 96,485.332 C/mol
  • Used in electrolysis calculations
  • Relates charge to moles of electrons
  • Critical for plating processes
🚀 Measurement Techniques
Various methods exist for measuring electric charge depending on the application and magnitude.
  • Electrometers for small charges
  • Coulombmeters for large charges
  • Integration of current over time
  • Capacitive measurement methods
🔬 Scientific Applications
Electric charge conversions are essential in various scientific and engineering fields.
  • Particle physics and accelerators
  • Plasma physics research
  • Semiconductor device analysis
  • Electroplating and corrosion
📏 Practical Considerations
When working with electric charge, several practical factors must be considered for accurate calculations.
  • Temperature effects on batteries
  • Self-discharge in storage devices
  • Efficiency losses in conversions
  • Safety considerations with high charges