Voltage Calculator

Enter 2 values to get the other values and press the Calculate button:

Voltage Calculator – Easily Calculate Voltage Online

Need to quickly calculate voltage? Our free online Voltage Calculator makes it easy to find voltage using current and resistance based on Ohm's Law. Whether you’re an electrical engineer, technician, or a student, this tool can help you get fast and accurate results.

What is Voltage?

Voltage, also called electric potential difference, is the amount of electric potential energy between two points in a circuit. It’s measured in volts (V) and is essential in understanding how electric circuits function. Voltage is what pushes electrical current through a conductor.

How to Use the Voltage Calculator

  1. Enter the Current (I) in Amperes (A).
  2. Enter the Resistance (R) in Ohms (Ω).
  3. Click the Calculate button to get the result in Volts (V).

Formula Used in Voltage Calculator

The voltage calculator uses Ohm’s Law to calculate voltage:

Voltage (V) = Current (I) × Resistance (R)

Where:

  • V = Voltage in volts
  • I = Current in amperes
  • R = Resistance in ohms

Example Calculation

If the current is 5 A and the resistance is 10 Ω, then:

Voltage = 5 × 10 = 50 V

Benefits of Using Our Voltage Calculator

  • Quick and accurate results using Ohm's Law
  • Free and easy-to-use interface
  • Works on all devices (mobile, desktop, tablet)
  • Perfect for electricians, students, engineers, and DIYers

Real-World Applications of Voltage Calculation

Understanding voltage is vital in many practical situations:

  • Designing electrical circuits
  • Home appliance diagnostics
  • Solar panel installations
  • Battery voltage estimation

Who Should Use This Tool?

  • Electrical Engineers
  • Technicians & Electricians
  • Physics & Engineering Students
  • DIY Electronics Hobbyists

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Frequently Asked Questions (FAQs)

1. What is the unit of voltage?

Voltage is measured in volts (V), which represents the potential energy difference between two points.

2. Can I calculate voltage without resistance?

You need either current and resistance or current and power to calculate voltage.

3. Is this calculator suitable for high voltage systems?

Yes, but it's recommended to verify with industrial-grade instruments for critical operations.

4. Can I use this for battery voltage calculation?

Yes, if you know the current and resistance involved in the battery circuit.

5. Is this calculator accurate?

It follows Ohm's Law precisely and provides accurate theoretical results.