Square Foot (ft²)
A square foot is the area of a square one foot per side, equal to exactly 0.09290304 square meters.
Square feet describe US home floor area, office leases, and retail space listings.
Square Foot to Square Inch
Convert square foot to square inch instantly. Type in either field — results update live.
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Area Square Foot Square Inch
1 square foot = 144 square inches
Unit
Unit
Conversion table
Selected ft² values converted to in² using the exact factor from this tool.
| ft² | in² |
|---|---|
| 0.01 | 1.44 |
| 0.1 | 14.4 |
| 1 | 144 |
| 2 | 288 |
| 3 | 432 |
| 5 | 720 |
| 10 | 1,440 |
| 20 | 2,880 |
| 50 | 7,200 |
| 100 | 14,400 |
| 1,000 | 144,000 |
How to convert
Exact conversion factors in both directions, plus a worked example.
1 ft² = 144 in²
1 in² = 0.0069444444 ft²
To convert square foot to square inch, multiply by 144.
To convert square inch to square foot, multiply by 0.0069444444.
Example: convert 10 ft² to in²
10 × 144 = 1440 in²
About these units
Short background on the units used in this conversion.
Frequently asked questions
How many square inches are in one square foot?
One square foot equals 144 square inches. Multiply your square feet value by 144 to convert to square inches.
What is the conversion formula?
in² = ft² × 144The reverse is
ft² = in² × 0.0069444444, using the same exact factors as this converter.Is this Square Foot to Square Inch converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.
All square foot conversions
Jump to any area conversion starting from square foot — including the reverse direction and every other unit in our dataset.
square inch (in²) → square foot (ft²)
square foot (ft²) → square meter (m²)square foot (ft²) → square kilometer (km²)square foot (ft²) → square centimeter (cm²)square foot (ft²) → square millimeter (mm²)square foot (ft²) → square micrometer (µm²)square foot (ft²) → square nanometer (nm²)square foot (ft²) → square decimeter (dm²)square foot (ft²) → square dekameter (dam²)square foot (ft²) → square hectometer (hm²)square foot (ft²) → hectare (ha)square foot (ft²) → are (a)square foot (ft²) → barn (b)square foot (ft²) → square mile (mi²)square foot (ft²) → square mile (us survey) (mi² surv)square foot (ft²) → sectionsquare foot (ft²) → square yard (yd²)square foot (ft²) → square foot (us survey) (ft² surv)square foot (ft²) → sabinsquare foot (ft²) → circular inch (circ in)square foot (ft²) → acre (ac)square foot (ft²) → acre (us survey) (ac surv)square foot (ft²) → square rod (rd²)square foot (ft²) → square rod (us survey) (rd² surv)square foot (ft²) → square perch (perch²)square foot (ft²) → square pole (pole²)square foot (ft²) → square chain (ch²)square foot (ft²) → roodsquare foot (ft²) → township (twp)square foot (ft²) → homesteadsquare foot (ft²) → square mil (mil²)square foot (ft²) → circular mil (circ mil)square foot (ft²) → square nautical mile (NM²)square foot (ft²) → arpentsquare foot (ft²) → cuerdasquare foot (ft²) → plazasquare foot (ft²) → varas castellanas cuad (varas cast.)square foot (ft²) → varas conuqueras cuad (varas con.)square foot (ft²) → electron cross section (σₑ)