Square Meters Calculator

The online square meter calculator is a free and professional tool that allows you to accurately calculate the surface area in square meters (m²) of any environment, room, or area. Simply enter the length and width in meters to instantly get the square meter calculation.

How Are Square Meters Calculated?

The formula for calculating square meters is simple: just multiply the length by the width of the area. For example:

• Room 4m x 5m = 20 square meters (m²)
• Kitchen 3m x 4m = 12 square meters
• Terrace 2m x 6m = 12 square meters

With our calculator, you can add multiple areas to get the total surface area of an apartment, office, or any space.

When to Use the Square Meter Calculator

This tool is essential for:

• Renovations: calculate the quantity of tiles, parquet, or paint needed
• Flooring purchase: avoid waste by calculating the exact m² to cover
• Real estate transactions: verify the declared surface area of a property
• Rent: calculate the cost per square meter and compare different options
• Furnishing: plan furniture arrangement by knowing the available space
• Work estimates: provide precise data to bricklayers, tilers, and painters

Useful Conversions for Square Meters

Here are the most common conversions:

• 1 square meter = 10,000 square centimeters (cm²)
• 1 square meter = 10.764 square feet (sq ft)
• 1 hectare = 10,000 square meters
• 100 square meters = 1 are

Calculating Square Meters for Irregular Shapes

For spaces with non-rectangular shapes:

• L-shaped rooms: divide into 2 rectangles and sum the areas
• Triangles: (base x height) / 2
• Circles: π x radius²
• Trapezoids: (major base + minor base) x height / 2

FAQ - Frequently Asked Questions about Square Meters

How do I calculate the square meters of a room?

Measure the length and width of the room in meters, then multiply them together. For example, a room 4 meters by 3 meters has a surface area of 12 square meters.

How many square meters are needed for a bedroom?

A single bedroom requires at least 9 m², while a double bedroom should have at least 14 m². For a double bedroom with wardrobe space, 16-20 m² are recommended.

How are commercial square meters calculated?

Commercial square meters include the usable surface area plus a percentage for walls and common spaces. Generally, it's calculated as: walkable surface area + 10-15% for perimeter walls + share of common spaces.

How many tiles are needed to cover X square meters?

Calculate the total m² and add 10% for waste. Then divide by the surface area of a single tile. Example: for 20 m² + 10% = 22 m². With 60x60cm tiles (0.36 m²), approximately 62 tiles are needed.

What is the difference between walkable and commercial m²?

Walkable m² are the effectively usable surface area, while commercial m² also include the thickness of the walls (50% of perimeter walls and 100% of internal walls) plus a share of common spaces.