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Milliamperes to Amperes Converter

Convert milliamperes to amperes and amperes to milliamperes instantly. Bidirectional current converter with formula and common values.

mA

Amperes

0.5

A

500 mA = 0.5 A

A = mA × 0.001

Milliamperes to Amperes: 1 mA equals 0.001 A. To convert milliamperes to amperes, multiply by 0.001 (A = mA × 0.001). For example, 10 mA = 0.01 A.

How to Convert Milliamperes to Amperes

To convert from milliamperes to amperes, multiply the value by 0.001. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Milliamperes to Amperes: A = mA × 0.001
  • Amperes to Milliamperes: mA = A × 1000

Milliamperes to Amperes Conversion Chart

Milliamperes (mA)Amperes (A)
0.10.0001
0.250.00025
0.50.0005
10.001
20.002
30.003
50.005
100.01
200.02
250.025
500.05
1000.1
2500.25
10001

Understanding the Units

What is a Milliampere?

The ampere is the SI base unit of electric current, defined since 2019 by fixing the elementary charge at exactly 1.602176634 × 10⁻¹⁹ coulombs.

Named after André-Marie Ampère (1775–1836), French mathematician and physicist who founded the science of classical electromagnetism.

Common contexts: electrical engineering, power distribution.

What is an Ampere?

The ampere is the SI base unit of electric current, defined since 2019 by fixing the elementary charge at exactly 1.602176634 × 10⁻¹⁹ coulombs.

Named after André-Marie Ampère (1775–1836), French mathematician and physicist who founded the science of classical electromagnetism.

Common contexts: electrical engineering, power distribution.

Real-World Reference Points

Item Milliamperes (mA) Amperes (A)
Phone charging10.001
US household circuit (15 A)150.015
Car starter motor2000.2

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FAQ

How do I convert milliamperes to amperes?

Divide the milliampere value by 1,000 (or multiply by 0.001). For example, 5,300 mA = 5.3 A.

What current do common household devices draw?

A phone charger draws about 1,000-3,000 mA (1-3 A), a laptop charger 2,000-5,000 mA, and a microwave 8,000-15,000 mA.

What is the difference between mA and A on a multimeter?

The mA setting measures small currents (up to ~200-500 mA) through a high-sensitivity shunt. The A setting handles larger currents (up to ~10-20 A) through a low-resistance shunt.

Why do battery specs use mA instead of A?

Battery capacity in mAh and discharge rates in mA provide more intuitive numbers for the small currents typical of portable electronics, avoiding decimal fractions of amperes.

How many amperes are in 1 milliamper?

1 mA equals 0.001 A.

How do you convert milliamperes to amperes?

Multiply the milliamper value by 0.001. Formula: A = mA × 0.001.

How many amperes are in 5 milliamperes?

5 mA = 0.005 A.

How do you convert amperes back to milliamperes?

Use the inverse formula: mA = A × 1000. For example, 1 A = 1000 mA.

What is the difference between Milliamper and Amper?

The ampere is the SI base unit of electric current, defined since 2019 by fixing the elementary charge at exactly 1.602176634 × 10⁻¹⁹ coulombs. The ampere is the SI base unit of electric current, defined since 2019 by fixing the elementary charge at exactly 1.602176634 × 10⁻¹⁹ coulombs.