1. What is a Wattage to Amps Calculator?

Definition: This calculator converts electrical power in watts to current in amps using the voltage.

Purpose: It helps electricians, engineers, and DIY enthusiasts determine the current draw of electrical devices.

2. How Does the Calculator Work?

The calculator uses Ohm's Law formula:

Where:

• \( I \) — Current in amperes (amps)
• \( P \) — Power in watts
• \( V \) — Voltage in volts

Explanation: The power (watts) is divided by voltage (volts) to get the current (amps).

3. Importance of Current Calculation

Details: Proper current calculation ensures safe circuit design, proper wire sizing, and prevents electrical overloads.

4. Using the Calculator

Tips: Enter the power in watts and voltage in volts (default 120V). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What voltage should I use?
A: Use 120V for standard US household circuits, 240V for large appliances, or check your device specifications.

Q2: Does this work for DC and AC circuits?
A: Yes, for DC and AC resistive loads. For AC inductive loads, power factor must be considered.

Q3: How do I find the wattage of a device?
A: Check the device label or specifications. Watts = Volts × Amps if only current is known.

Q4: Why is my result showing many decimal places?
A: The calculator shows precise results. Round to 1-2 decimal places for practical applications.

Q5: What if I know amps but need watts?
A: Use the formula P = V × I or our Amps to Watts calculator.