📐 Square Feet ⇄ Square Meters Converter

Convert area between square feet and square meters in one step. This converter is ideal for comparing floor plans, estimating flooring or paint, and working with international building drawings that mix US and metric units.

Square feet and square meters conversion results

Enter an area value and choose whether it's in square feet or square meters, then select Convert Square Feet ⇄ Square Meters to see both units side by side.

Area conversion breakdown

Once you run a conversion, this section will summarize the starting value, direction of conversion, and the factors used so you can double-check the math or share it with others.

Area converter inputs and key terms

This converter keeps things simple by focusing on two of the most common area units used in construction, real estate, and remodeling. Here's what each input means.

• Area value: The numeric size of the area you want to convert. This might be a room size from a floor plan, the area of a patio, the surface to be painted, or the coverage listed on a product.
• Starting unit: The unit that your original number is expressed in. If your plan says “250 sq ft,” choose square feet; if it says “23.2 m²,” choose square meters.
• Square feet (ft²): A unit of area commonly used in the United States. One square foot is the area of a square that is 1 foot on each side (12 inches × 12 inches).
• Square meters (m²): The standard metric unit of area, widely used in building plans, international listings, and engineering documents. One square meter is a square that is 1 meter on each side.
• Conversion factor (sq ft → sq m): One square foot is approximately 0.092903 square meters. Multiplying by this factor converts ft² to m².
• Conversion factor (sq m → sq ft): One square meter is approximately 10.7639 square feet. Multiplying by this factor converts m² to ft².
• Rounded precision: Results are shown with a few decimal places to balance accuracy with readability. For cost estimates or material orders, it's common to round to 2–3 decimal places or the nearest practical value.

Formulas used in the Square Feet ⇄ Square Meters Converter

The converter uses international standard conversion factors between square feet and square meters. All calculations are simple multiplications based on those constants.

1. Converting square feet to square meters

Let:
Aft² = area in square feet
Am² = area in square meters
kft→m = conversion factor from ft² to m²
Using the standard factor:
kft→m ≈ 0.09290304
Then:
Am² = Aft² × kft→m

2. Converting square meters to square feet

Let:
Am² = area in square meters
Aft² = area in square feet
km→ft = conversion factor from m² to ft²
Using the standard factor:
km→ft ≈ 10.7639104167
Then:
Aft² = Am² × km→ft

3. Relationship between the two factors

The factors are reciprocals:
kft→m = 1 ÷ km→ft
so that:
1 m² × km→ft ≈ 10.7639 ft²
and:
1 ft² × kft→m ≈ 0.092903 m²

The calculator keeps a more precise internal factor and rounds the displayed result to a user-friendly number of decimal places. This avoids rounding drift when converting back and forth.

Square Feet ⇄ Square Meters Converter FAQs

• Why do I need to convert between square feet and square meters?
  Many real estate listings, floor plans, and building documents mix units. US-based projects often list square footage, while international plans and product data use square meters. Converting between them helps you compare spaces, estimate materials, and understand drawings regardless of the units used.
• How accurate are the square feet to square meters conversions?
  The calculator uses standard engineering conversion factors with more precision behind the scenes than is usually needed for construction or home projects. For everyday use, rounding to a few decimal places is more than sufficient. If a project requires very tight tolerances, designers typically work in a single unit system from the start.
• Should I round the converted area before ordering materials?
  Yes. Most materials are sold in whole units (boxes of flooring, gallons of paint, rolls of membrane, etc.). It's normal to round the area up slightly and add a waste factor recommended by the manufacturer or installer to avoid running short during the job.
• Can I use this converter for any type of area measurement?
  Absolutely. The math is the same whether you're converting a bedroom floor, a deck, a parking space, a roof section, or the surface area for coatings. As long as the measurement is an area in square feet or square meters, this tool applies.
• Why do square meters and square feet use different decimal places?
  The number of decimal places is a readability choice. Because 1 m² is larger than 1 ft², the same physical area will look like a smaller number in square meters. Showing a few decimal places in both units helps you see the relationship without overwhelming you with digits.
• Do building codes care whether I use square feet or square meters?
  Most codes specify one primary unit system (imperial or metric) depending on your region. However, many reference guides and international standards provide both. This converter helps you read and compare values across systems, but you should always follow the unit system specified by your local building authority and design professional.