1. What is a Watts 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 the formula:

Where:

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

Explanation: The power (watts) is divided by voltage (volts) to calculate 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's the difference between watts and amps?
A: Watts measure power (energy per unit time), while amps measure current (electron flow rate).

Q2: What voltage should I use?
A: Common voltages are 120V (US residential), 230V (EU residential), or 12V/24V (automotive/DC systems).

Q3: Does this work for both AC and DC?
A: Yes, for DC and AC resistive loads. For AC reactive loads, power factor must be considered.

Q4: How do I find the wattage of a device?
A: Check the device label or specifications. Sometimes listed as "W" or "Power".

Q5: Why is my calculated current higher than expected?
A: You might be using the wrong voltage value, or the device might have a power factor less than 1.