1. What is a Watts to kWh Calculator?

Definition: This calculator converts electrical power in watts to energy consumption in kilowatt-hours.

Purpose: It helps homeowners and businesses estimate electricity usage and costs for appliances and devices.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{kWh} \) — Kilowatt-hours (energy consumption)
• \( \text{Watts} \) — Power consumption of device
• \( \text{Hours} \) — Time device is in use

Explanation: Watts are converted to kilowatts (divided by 1000) then multiplied by hours of use to get total energy consumption.

3. Importance of Energy Calculation

Details: Understanding energy consumption helps with budgeting electricity costs and evaluating appliance efficiency.

4. Using the Calculator

Tips: Enter the device's wattage (found on label or manual) and estimated hours of use. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my appliance's wattage?
A: Check the label, manual, or manufacturer's website. Alternatively, use a wattage meter.

Q2: What's the difference between watts and kWh?
A: Watts measure power (instantaneous), kWh measures energy (power × time).

Q3: How can I estimate my electricity cost?
A: Multiply kWh result by your electricity rate (per kWh from your utility bill).

Q4: What if my device shows amps instead of watts?
A: For standard 120V circuits: Watts = Amps × 120. For 240V: Watts = Amps × 240.

Q5: Does this account for power factor?
A: This simple calculator assumes resistive loads. For motors or inductive loads, actual consumption may be higher.