Electric Unit Converter
Convert electric units instantly across Amperes, Volts, Ohms, Coulombs, Farads, and Siemens featuring live interactive unit diagrams, Ohm's law wheel, and step-by-step solutions.
Ampere: SI base unit of electric current (1 Coulomb per second)•Milliampere: 0.001 A (electronic circuits, USB power, sensor signals)
Popular Electric Current (I) Conversions
Smartphone Fast Chargers (3A)
USB-C fast chargers operating simultaneously
Standard Home Outlets (15A)
Household branch circuits running at capacity
Microcontroller Chips (20mA)
Arduino GPIO pins outputting max current
Industrial Arc Welders (250A)
Heavy welding machines running concurrently
Interactive Electrical Unit Conversion Map
The SI base unit sits at the center. The diagram calculates live converted values across all prefix and metric scales in real-time.
Step-by-Step Conversion Flow Pipeline
Every conversion routes through the SI base unit. The diagram displays the live numbers and conversion math for your input.
Physical Scale of Electrical Units
Logarithmic physical scale comparing your current input against real-world electrical systems.
Ohm's Law & Electrical Power Relationship Wheel
Dynamic Ohm's Law wheel computing corresponding Voltage, Current, Resistance, and Power for your current entry.
Step-by-Step Solution
Here's exactly how this answer was calculated, one step at a time.
Given: 10 A → mA
Step 1: Identify SI base conversion factors for Electric Current (I)
In electrical physics, all units of electric current (i) relate to the SI base/derived unit of Ampere (A).
1 A = 1 A 1 mA = 0.001 AStep 2: Convert ampere into base Amperes (A)
Multiply your entered input value by Ampere's conversion factor to determine the absolute SI quantity.
10 A × 1 = 10 AStep 3: Convert base Amperes into target unit (Milliampere)
Divide the base SI value by Milliampere's conversion factor to obtain the final converted output.
10 A ÷ 0.001 = 10,000 mAStep 4: Final Converted Result
10 A = 10,000 mA
Final Converted Result:
10,000 mA
Electric Unit Converter: Convert Amperes, Volts, Ohms, Coulombs, Farads & Siemens
Electricity is the cornerstone of modern civilization, powering everything from microelectronic sensors in wearable devices to high-voltage electric vehicle powertrains and national energy grids. Understanding and converting between electrical units is an essential task for electrical engineers, electronics hobbyists, physics students, and technicians.
Electrical physics is governed by interconnected physical quantities defined under the International System of Units (SI). Electric current (measured in Amperes, A), potential difference (measured in Volts, V), electrical resistance (measured in Ohms, Ω), electric charge (measured in Coulombs, C), capacitance (measured in Farads, F), and conductance (measured in Siemens, S) all link together through foundational laws like Ohm's Law (V = I · R) and Joule's Law of electric power (P = V · I).
This online Electric Unit Converter delivers fast, accurate, multi-domain conversion across all 6 core electrical categories, complete with live dynamic SVG diagrams, step-by-step mathematical solutions, Ohm's law calculators, and reference conversion matrix tables.
The 6 Essential Electrical Domains Explained
1. Electric Current (I): Measured in Amperes (A), current represents the rate of flow of electric charge past a point in a circuit (1 A = 1 Coulomb per second). Microamperes (µA) and milliamperes (mA) are used in signal electronics, while kiloamperes (kA) describe heavy power distribution and lightning strikes.
2. Electric Potential & Voltage (V): Measured in Volts (V), voltage is the electrical potential energy difference per unit charge (1 V = 1 Joule per Coulomb). Millivolts (mV) measure bio-electric signals like ECGs and thermocouples, while kilovolts (kV) and megavolts (MV) describe grid transmission lines.
3. Electrical Resistance (R): Measured in Ohms (Ω), resistance quantifies how strongly a material opposes the flow of electric current (1 Ω = 1 Volt per Ampere). Milliohms (mΩ) describe PCB traces and power MOSFETs, while megohms (MΩ) measure insulation resistance.
4. Electric Charge (Q): Measured in Coulombs (C) or Ampere-hours (Ah), charge is the physical property of matter that causes it to experience force in an electromagnetic field. Battery capacities for phones are given in milliampere-hours (mAh), where 1 mAh = 3.6 Coulombs.
5. Electrical Capacitance (C): Measured in Farads (F), capacitance is the ability of a component to store electric charge per volt (1 F = 1 Coulomb per Volt). Microfarads (µF), nanofarads (nF), and picofarads (pF) are standard values in electronic filter circuits.
6. Electrical Conductance (G): Measured in Siemens (S) or Mho (℧), conductance is the reciprocal of electrical resistance (G = 1 / R). It measures how easily electric current flows through a conductor.
Ohm's Law & Power Derivations with Practical Examples
Ohm's Law defines the fundamental relationship between Voltage (V), Current (I), and Resistance (R) in a linear circuit:
- Voltage Formula (V = I × R): Example: If a circuit draws 2 Amperes through a 60 Ohm resistor, the voltage drop is 2 A × 60 Ω = 120 Volts.
- Current Formula (I = V / R): Example: A 12 Volt car battery connected across a 4 Ohm load draws 12 V / 4 Ω = 3 Amperes.
- Resistance Formula (R = V / I): Example: An LED operating at 3.3 Volts with a current of 0.02 Amperes (20 mA) requires a resistance of 3.3 V / 0.02 A = 165 Ohms.
- Electrical Power Formula (P = V × I = I² × R): Example: A 120 Volt appliance drawing 10 Amperes consumes 120 V × 10 A = 1,200 Watts (1.2 kW).
Electrical Conversion Matrix Reference Tables
1. Electric Current (A) Conversion Matrix
| Unit | Ampere (A) | Milliampere (mA) | Microampere (µA) | Kiloampere (kA) |
|---|---|---|---|---|
| 1 A | 1 | 1,000 | 1,000,000 | 0.001 |
| 1 mA | 0.001 | 1 | 1,000 | 0.000001 |
| 1 µA | 0.000001 | 0.001 | 1 | 1e-9 |
| 1 kA | 1,000 | 1,000,000 | 1,000,000,000 | 1 |
2. Electric Voltage (V) Conversion Matrix
| Unit | Volt (V) | Millivolt (mV) | Microvolt (µV) | Kilovolt (kV) |
|---|---|---|---|---|
| 1 V | 1 | 1,000 | 1,000,000 | 0.001 |
| 1 mV | 0.001 | 1 | 1,000 | 0.000001 |
| 1 kV | 1,000 | 1,000,000 | 1,000,000,000 | 1 |
Real-World Industrial & Electronics Applications
Automotive & EV Powertrains: Electric vehicle batteries operate at high DC voltages (350V–800V) to deliver maximum motor torque while keeping wire thickness low. Battery capacities are measured in kilowatt-hours (kWh) or Ampere-hours (Ah).
Printed Circuit Board (PCB) Design: Microcontrollers run at low voltages (3.3V or 1.8V) with currents in milliamperes (mA). Decoupling capacitors in microfarads (µF) or nanofarads (nF) filter high-frequency voltage noise across power rails.
Power Grid Transmission & Substations: Electricity is generated at medium voltage (11kV), stepped up to extra high voltage (275kV–500kV) for long-distance transmission to minimize line resistance losses, and stepped down to 120V/230V for domestic sockets.
Frequently Asked Questions
How do I convert Amperes (A) to Milliamperes (mA)?
Multiply the value in Amperes by 1,000. For example, 0.5 Amperes = 0.5 × 1,000 = 500 milliamperes (mA).
How do I convert Ampere-hours (Ah) to Coulombs (C)?
Multiply the Ampere-hour value by 3,600 (since 1 hour = 3,600 seconds). For example, a 5 Ah battery holds 5 × 3,600 = 18,000 Coulombs of charge.
What is the relation between Ohms and Siemens?
Siemens (S) is the SI unit of electrical conductance, which is the exact mathematical reciprocal of resistance in Ohms (G = 1 / R). A 50 Ohm resistor has a conductance of 1 / 50 = 0.02 Siemens (20 mS).
What is the difference between Microfarads (µF), Nanofarads (nF), and Picofarads (pF)?
1 Microfarad (µF) = 1,000 Nanofarads (nF) = 1,000,000 Picofarads (pF). These metric prefixes represent 10⁻⁶, 10⁻⁹, and 10⁻¹² Farads respectively.
What does Ohm's Law state?
Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R): V = I × R.