What is 1 square metre in square feet?

1 square metre = approximately 10.7639 square feet. The calculator does the conversion automatically and also displays the result in square yards, acres and hectares.

How do I find the area of an L-shaped room?

Split the room into two rectangles, calculate the area of each, then add the two together. The calculator allows you to add multiple shapes by computing each separately and summing the results.

1 acre = 4,046.86 square metres = 43,560 square feet = 0.4047 hectares. About the size of a UK football pitch (without end zones).

📐 Square Footage Calculator

Floor area, room area or land size for any shape — converted instantly between m², ft², yd², acres and hectares.

Shape

Input units

Length

Width

Base

Height (perpendicular)

Radius

Side a (parallel)

Side b (parallel)

Height (perpendicular distance between parallel sides)

ℹ️ Tip. For irregular L-shaped rooms, split the area into two rectangles, calculate each separately and add the results.

About the Square Footage Calculator

The Square Footage Calculator works out the area of any room, floor or plot of land and converts the result into the unit you need. It supports four common shapes — rectangle, triangle, circle and trapezoid — and accepts measurements in metres, feet or feet + inches.

Formulas used

Rectangle: Area = length × width
Triangle: Area = ½ × base × perpendicular height
Circle: Area = π × radius²
Trapezoid: Area = ½ × (side a + side b) × perpendicular height

Unit conversions

The calculator displays the result in six common units. The exact conversions are:

1 m² = 10.7639 ft² = 1.19599 yd² = 1,550 in²
1 acre = 4,046.86 m² = 43,560 ft² = 0.4047 hectares
1 hectare = 10,000 m² = 2.4711 acres

How to measure a room or floor

Use a tape measure or laser to find the length and width.
Take measurements at floor level, ignoring skirting boards but including alcoves.
For irregular shapes, split the room into rectangles and add their areas.
Convert any feet-and-inches readings using the calculator's "Feet + Inches" mode.

Common uses

Estimating flooring (carpet, tiles, laminate, vinyl) — buy 5–10% extra for cuts and waste
Buying paint — most brands list coverage per litre or gallon (m² or ft²) on the tin
Property listings — UK floorplans often quote total internal area in ft² and m²
Garden and land sizing — convert to acres or hectares for plot deeds
Heating/cooling sizing for HVAC, radiators or air conditioning

Frequently Asked Questions

How do you calculate square footage? For a rectangle, multiply length by width. For other shapes, use the formulas above. The calculator handles all four automatically.

What is 1,000 ft² in square metres? 1,000 ft² ≈ 92.9 m². Type 1,000 into a Rectangle in feet (with 1 as the other side) and the m² result is shown immediately.

Why does my measurement seem too big? Double-check the units — feet and metres are easy to confuse. A "5 by 4" room is 20 m² (≈ 215 ft²) in metres but only 20 ft² (≈ 1.86 m²) in feet.

Does the calculator handle L-shapes? Not directly. Split the L into two rectangles, calculate each, and add the results.

Is my data stored? No — every calculation runs locally in your browser.

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Important Note: This tool is intended to provide estimates and should not be used as a substitute for professional advice. Information generated by these calculators may be incomplete and does not account for all individual circumstances. Always seek the counsel of a certified expert (such as a financial advisor, healthcare provider, or licensed engineer) before taking action based on these results.

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