Home Back

Electric Radiator Size Calculator

Radiator Size Formula:

\[ W = V \times 40 \]

Watts (W)

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is an Electric Radiator Size Calculator?

Definition: This calculator estimates the required wattage for an electric radiator based on room volume.

Purpose: It helps homeowners and professionals determine the appropriate radiator size for efficient room heating.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ W = V \times 40 \]

Where:

Explanation: The standard calculation uses 40 Watts per cubic meter as a general rule for well-insulated rooms.

3. Importance of Proper Radiator Sizing

Details: Correct radiator sizing ensures efficient heating, energy savings, and prevents under- or over-heating of spaces.

4. Using the Calculator

Tips: Simply enter the room volume in cubic meters. The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 40 Watts per cubic meter?
A: This is a standard value for well-insulated rooms. Poor insulation may require 50-60 W/m³.

Q2: How do I calculate room volume?
A: Multiply room length × width × height in meters.

Q3: When would I need more than 40 W/m³?
A: For rooms with high ceilings, poor insulation, or in very cold climates.

Q4: Does this work for all room types?
A: Bathrooms typically need more (about 60 W/m³), while bedrooms may need less.

Q5: Should I round up the calculated wattage?
A: Yes, it's recommended to round up to the nearest available radiator size.

Electric Radiator Size Calculator© - All Rights Reserved 2025