Square Feet to Square Meters Converter — Convert ft² to m² (Exact: 1 ft² = 0.09290304 m²)
Accurate square feet (ft²) to square meters (m²) converter using the exact international foot (1 ft = 0.3048 m ⇒ 1 ft² = 0.09290304 m²). Ideal for real estate, architecture, flooring, facility planning, landscaping, and construction takeoffs. Includes exact formulas, step-by-step examples, precision guidance, expanded tables, and in-depth FAQs.
Exact bases: 1 ft = 0.3048 m ⇒ 1 ft² = 0.09290304 m². Therefore m² = ft² × 0.09290304 (or m² = ft² ÷ 10.7639104167). See all area unit conversion calculators.
About Square Feet to Square Meters Conversion
The square foot (ft²) remains common in US real estate, interior fit-outs, retail rollouts, and facility programs. The square meter (m²) is the SI standard used in international codes, engineering, sustainability metrics, and cross-border reporting. Converting square feet to square meters lets you present data in SI while keeping familiar US views for stakeholders.
Because the international foot is fixed exactly, the area factor is exact: 1 ft² = 0.09290304 m². This guarantees your conversions align with CAD/BIM models, spreadsheets, and permit forms—as long as you keep full precision in your pipeline and round once at display time.
Typical pattern: store area_m2 canonically, compute area_ft2 for US-facing UI, and document constants plus rounding so every team uses identical math.
Square Feet to Square Meters Formula
Exact relationship
Use either expression:
m² = ft² × 0.09290304
// or
m² = ft² ÷ 10.7639104167Example:
1000 ft² × 0.09290304 = 92.90304 m²Related Area Converters
What is a Square Foot (ft²)?
A square foot is the area of a square with 1-foot sides. Under the modern definition, 1 ft = 0.3048 m exactly, giving 1 ft² = 0.09290304 m² exactly. It’s prevalent in US-centric contracts and MLS listings but often converted to m² for code compliance and global reporting.
What is a Square Meter (m²)?
One square meter is the area of a square with 1-meter sides. It composes naturally with other SI metrics: live loads in kN/m², illuminance in lux (lm/m²), and energy intensity in kWh/m²·yr. Most international standards use m² as the canonical area unit.
Step-by-Step: Converting ft² to m²
- Read the area in square feet (ft²) from your plan, takeoff, or lease.
- Multiply by 0.09290304 to convert to square meters (m²).
- Round once at presentation (e.g., whole m² for marketing; 1–2 decimals for procurement/QA).
Example walkthrough:
Input: 402.65 ft²
Compute: 402.65 × 0.09290304 = 37.410 m²
Output: 37.41 m² (UI, 2 decimals)Common Conversions
Everyday quick checks (ft² → m²)
| ft² | m² | ft² | m² |
|---|---|---|---|
| 50 | 4.64515 | 100 | 9.29030 |
| 250 | 23.22576 | 500 | 46.45152 |
| 750 | 69.67728 | 1000 | 92.90304 |
| 1500 | 139.35456 | 2000 | 185.80608 |
| 5000 | 464.51520 | 10000 | 929.03040 |
Precision, Rounding & Significant Figures
Operational rounding
For MLS/marketing, whole m² is common; for takeoffs and schedules, 1–2 decimals balance clarity with precision. Store exact values; round once on output so reports, PDFs, and exports match.
Consistent documentation
Use unit-suffixed fields—area_ft2, area_m2—and include a methods note: “Exact: 1 ft = 0.3048 m; 1 ft² = 0.09290304 m²; m² = ft² × 0.09290304; round at presentation.”
Where This Converter Is Used
- 🏢 Real estate & leasing: Convert US-centric ft² to m² for international brochures and KPIs.
- 📐 Architecture & interiors: Schedule views and room tags in both m² and ft².
- 🧱 Construction takeoffs: Flooring, paint, roofing, and facade areas in SI for procurement.
- 🌳 Landscaping & site: Paving, turf, and planting areas with SI reporting.
- 🏭 Facilities & manufacturing: Space planning and EHS calculations in m².
Quick Reference Table
Square meters to square feet (m² → ft²)
| m² | ft² | m² | ft² |
|---|---|---|---|
| 5 | 53.81955 | 10 | 107.63910 |
| 20 | 215.27821 | 50 | 538.19552 |
| 75 | 807.29328 | 100 | 1076.39104 |
| 150 | 1614.58656 | 200 | 2152.78209 |
| 250 | 2690.97761 | 500 | 5381.95522 |
Frequently Asked Questions
What is the exact formula to convert square feet to square meters?
The international foot is defined as exactly 0.3048 meters, so 1 ft² = (0.3048 m)² = 0.09290304 m². To convert ft² → m², multiply by 0.09290304. The inverse is ft² = m² ÷ 0.09290304 (≈ m² × 10.7639104167). Because these are exact constants, results are reproducible across CAD/BIM, spreadsheets, and permitting forms.
Why do I need to square the conversion factor for area?
Area is two-dimensional. A linear conversion (feet ↔ meters) must be squared to get the correct area factor. For example, since 1 ft = 0.3048 m, then 1 ft² = (0.3048)² m² = 0.09290304 m². Forgetting to square is a common source of 3.28× vs 10.76× errors.
How should I round when publishing m² from ft²?
Keep full precision internally and round once on output. For listings and brochures, whole m² or one decimal is typical; quantity takeoffs and engineering schedules often show 1–2 decimals. Publish your rounding rule to prevent down-stream discrepancies across PDFs, invoices, and CSVs.
Do scope definitions (net/gross/carpet) change the conversion?
No—scope affects what areas you include, not the unit conversion. Our calculator only changes units. Define net vs. gross vs. carpet per your standard or lease, then convert the resulting areas using the exact factor.
What about the US survey foot—do I need to use it?
Modern projects standardize on the international foot (exactly 0.3048 m). The deprecated US survey foot differs by ~2 parts per million. Unless your contract explicitly requires survey-foot coordinates, use the international definitions for consistent ft² ↔ m² results.
How do I avoid double-rounding and unit mixups in exports?
Centralize conversions in a single utility, store a canonical unit (commonly m²), and round once at the presentation/export layer. Use unit-suffixed column names like area_ft2 and area_m2, and document constants: “1 ft² = 0.09290304 m²; round once at output.”
Can I add or average areas that are in mixed units?
Avoid mixing. Normalize everything to a canonical unit (m² or ft²), perform the math, then convert for display. Mixing units in a single column is a leading source of audit failures and off-by-percent errors.
How can I regression-test my pipeline?
Keep a short table of known pairs—e.g., 1 ft² = 0.09290304 m²; 1000 ft² = 92.90304 m²; 10 m² = 107.639104167 ft²—and assert both directions in CI to catch accidental constant edits or formatting regressions.
Tips for Working with ft² & m²
- Keep SI (m²) canonical for analytics and compliance; compute ft² for US-facing documents.
- Publish a single rounding policy and apply it uniformly across schedules, PDFs, and exports.
- Document scope (net/gross) separately from units; unit conversion does not define scope.