# Electric Current Conversion > Convert between amperes, milliamperes, microamperes, and other electric current units instantly **Category:** Math **Keywords:** electric, current, ampere, amp, milliampere, microampere, conversion, electrical **URL:** https://complete.tools/electric-current-conversion ## How it calculates The tool uses the following conversion formulas: 1 A = 1,000 mA 1 mA = 1,000 µA 1 A = 1,000,000 µA. The variables in these formulas are defined as follows: - A (Amperes) represents the base unit of electric current. - mA (Milliamperes) is one-thousandth of an ampere. - µA (Microamperes) is one-millionth of an ampere. To convert from one unit to another, the tool applies these relationships. For example, to convert 2 A to mA, the formula used is: 2 A × 1,000 mA/A = 2000 mA. Similarly, to convert from mA to A, the tool rearranges the formula: X mA ÷ 1,000 = Y A. The mathematical relationship is linear, meaning that the conversion factors remain constant across all values. ## Who should use this Electrical engineers designing circuits may utilize this tool to ensure proper current ratings for components. Laboratory technicians conducting experiments with sensitive equipment often need accurate current measurements, making this tool essential. Additionally, hobbyists working on DIY electronics projects frequently convert between current units to match specified component requirements. ## Worked examples Example 1: An electrical engineer needs to convert a current of 0.75 A to milliamperes. Using the conversion formula: 0.75 A × 1,000 mA/A = 750 mA. Therefore, the current is 750 milliamperes. Example 2: A technician is measuring a small signal current and finds it to be 150 mA. To convert this to microamperes, the formula used is: 150 mA × 1,000 µA/mA = 150,000 µA. Thus, the signal current is 150,000 microamperes. Example 3: A hobbyist has a circuit that operates at 1,200 µA and wants to express this in amperes. The conversion formula is: 1,200 µA ÷ 1,000,000 µA/A = 0.0012 A. Hence, the circuit operates at 0.0012 amperes. ## Limitations This tool has specific limitations. Precision is limited by the significant figures of the input values; very small currents may not yield accurate results when expressed in higher units due to rounding. The tool assumes that the input is always a numerical value; non-numerical inputs will result in errors. Additionally, the conversion factors are valid only under standard conditions; extreme temperatures or pressures may affect current measurements in practical applications. Finally, the tool does not provide conversions for non-standard units of electric current, which may be necessary in specialized fields. ## FAQs **Q:** How is the unit of an ampere defined in terms of charge? **A:** An ampere is defined as the flow of one coulomb of electric charge passing through a point in a circuit in one second, based on the International System of Units (SI). **Q:** Can this tool convert between non-standard units of electric current? **A:** No, this tool is limited to standard units such as amperes, milliamperes, and microamperes. Non-standard units are not supported. **Q:** What assumptions does the tool make about the input values? **A:** The tool assumes that all input values are numerical and positive. It does not account for negative values or units other than those specified. **Q:** How does temperature affect current measurement? **A:** Temperature can affect the resistance in a circuit, which in turn influences current flow. This tool does not account for environmental factors affecting current measurements. --- *Generated from [complete.tools/electric-current-conversion](https://complete.tools/electric-current-conversion)*