Milliamps to Amps Converter 2025 - Electric Current Conversion Calculator

Milliamps to Amps Converter

Convert milliamps to amps for electrical current calculations

mA
A

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About Milliamps to Amps Conversion

Converting milliamps to amps is fundamental in electrical engineering, electronics, and circuit analysis where accurate current measurements are essential.

Conversion Formula

1 amp = 1,000 milliamps
Amps = Milliamps ÷ 1,000

Common Conversions

  • 100 mA = 0.1 A
  • 500 mA = 0.5 A
  • 1,000 mA = 1 A
  • 2,000 mA = 2 A
  • 5,000 mA = 5 A

Current Unit Hierarchy

  • Microamp (μA): 10⁻⁶ amps
  • Milliamp (mA): 10⁻³ amps
  • Amp (A): Base unit of current
  • Kiloamp (kA): 10³ amps

Typical Current Values

  • LED indicator: 10-20 mA
  • Smartphone charging: 1-3 A (1000-3000 mA)
  • USB port: 500 mA - 3 A
  • Laptop charger: 3-5 A
  • Household outlet: 15-20 A
  • Car starter motor: 100-400 A

Applications

  • Electronic circuit design
  • Battery capacity calculations
  • Power supply specifications
  • Fuse and breaker sizing
  • Motor and component ratings
  • Safety system design

Safety Considerations

  • 10-20 mA: Muscular control lost
  • 30 mA: Respiratory paralysis begins
  • 75-100 mA: Ventricular fibrillation threshold
  • Always use proper safety equipment
  • Understand current ratings before working with electricity

Related Calculations

  • Power (W) = Voltage (V) × Current (A)
  • Ohm's Law: Current = Voltage ÷ Resistance
  • Energy = Power × Time