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Convert milliamps to volts instantly with our free mA to Voltage calculator. Easy, accurate, and step-by-step voltage calculation online.
An mA to Voltage calculator is a simple online tool that helps you convert electrical current in milliamps (mA) into voltage (V). Many students, engineers, technicians, and electronics hobbyists need this calculation in daily work. Doing it manually can be confusing, especially when different units are involved.
That is why we developed this free online mA to Voltage calculator. It allows you to calculate voltage instantly using the correct scientific formula. You only need to enter current and resistance, and the tool gives you accurate results in seconds.
If you are searching for how to convert mA to V, how many volts is 5 mA, or what is 1 mA equal to, this calculator is the perfect solution for you.
mA to Voltage conversion means finding the electrical voltage when current is given in milliamps. Voltage and current are connected through resistance. You cannot directly convert mA to volts without knowing resistance.
This relationship is explained by Ohm’s Law, which is the foundation of electrical calculations.
When current flows through a resistor, it creates a voltage drop. By knowing how much current is flowing and how much resistance is present, you can easily calculate voltage.
This is why our mA to Voltage calculator always asks for resistance along with current.
The mA to Voltage calculation is based on Ohm’s Law.
The standard formula is:
Voltage (V) = Current (I) × Resistance (R)
Since current is often given in milliamps, it must first be converted into amperes.
1 Ampere = 1000 mA
So the complete formula becomes:
Voltage (V) = (mA ÷ 1000) × Resistance (Ω)
In normal text format:
V = (mA / 1000) × R
Where:
This formula is 100% accurate and is used worldwide in electrical engineering.
Our online tool is designed to be simple and beginner-friendly. You can calculate voltage in just a few steps.
Step 1: Enter Current Value
Type the current in the input box. You can choose units like mA, A, µA, or kA.
Step 2: Select Current Unit
Choose the correct unit from the dropdown menu.
Step 3: Enter Resistance
Type the resistance value and select the unit such as Ω, kΩ, or MΩ.
Step 4: Select Output Voltage Unit
Choose whether you want the result in volts, millivolts, microvolts, or kilovolts.
Step 5: Click Calculate
Press the calculate button. The tool will instantly show the result along with step-by-step calculations.
No manual math is needed. Everything is done automatically and accurately.
Let us understand the calculation with a simple example.
Example:
Current = 5 mA
Resistance = 200 Ω
Step 1: Convert mA to A
5 mA ÷ 1000 = 0.005 A
Step 2: Apply Formula
V = I × R
V = 0.005 × 200
Step 3: Calculate
V = 1 Volt
Final Answer:
5 mA with 200 Ω resistance produces 1 Volt.
Another example:
Current = 20 mA
Resistance = 250 Ω
V = (20 ÷ 1000) × 250
V = 0.02 × 250
V = 5 Volts
So, 20 mA equals 5 volts when resistance is 250 ohms.
To convert mA to V, you must know resistance.
Follow this simple process:
Convert milliamps to amperes by dividing by 1000.
Multiply the result by resistance in ohms.
The final value is voltage in volts.
Without resistance, conversion is not possible.
That is why our calculator always includes resistance input.
The voltage of 5 mA depends on resistance.
Example:
If resistance = 100 Ω
V = (5 ÷ 1000) × 100 = 0.5 V
If resistance = 200 Ω
V = (5 ÷ 1000) × 200 = 1 V
If resistance = 1000 Ω
V = (5 ÷ 1000) × 1000 = 5 V
So, 5 mA does not have a fixed voltage. It depends on resistance.
1 mA means one milliampere of current.
In amperes:
1 mA = 0.001 A
In terms of voltage, 1 mA depends on resistance.
Example:
With 1000 Ω:
V = (1 ÷ 1000) × 1000 = 1 V
So, 1 mA equals 1 volt only when resistance is 1000 ohms.
mAh and volts measure different things.
mAh measures battery capacity.
Volt measures electrical pressure.
They cannot be directly converted.
To relate them, you need power or energy formulas.
Energy (Wh) = Voltage × Capacity (Ah)
Example:
If a battery is 1 V and 1000 mAh:
1000 mAh = 1 Ah
Energy = 1 × 1 = 1 Wh
So, 1 volt does not equal any fixed mAh value.
Our calculator is built for accuracy, speed, and simplicity.
Whether you are a student, technician, or engineer, this tool saves time and avoids mistakes.
The mA to Voltage calculator is an essential tool for anyone working with electronics and electrical systems. It uses the correct Ohm’s Law formula to convert milliamps into volts with high accuracy.
Instead of doing manual calculations, you can use this online tool to get instant, reliable results. It is simple, fast, and beginner-friendly.
If you want to know how to convert mA to V, how many volts is 5 mA, or what is 1 mA equal to, this calculator gives you the right answer every time.
No. Resistance is required. Without resistance, voltage cannot be calculated.
Yes. It uses Ohm’s Law, which is the standard electrical formula.
Yes. The calculator works on phones, tablets, and computers.
Yes. It supports mA, A, µA, kA, Ω, kΩ, MΩ, V, mV, µV, and kV.
Yes. It is 100% free and unlimited.