How do I convert ft² to in²?

Use the formula shown above or enter a value to see ft² converted to in² instantly.

What is the formula for ft² to in²?

The converter calculates in² by applying the category-specific conversion factor for Area.

When should I use ft² vs in²?

ft² and in² are both part of the Area category; pick the unit that matches your measurement context (e.g., scale, region, or industry standard).

Area Converter & Surface Reference

Convert ft² to in²

Use the live converter below to translate between Square Foot (ft²) and Square Inch (in²). Scroll further for quick examples, formula tips, and related units.

Formula insight: Most unit conversions use a simple multiplication or division by a conversion factor. The calculator shows the exact formula used.

Convert

ft² → in²

Square Foot

ft²

Square Inch

144

in²

Rounded result (4 decimals max)

Formula

1 ft² = 144 in²

Conversion sourcesTap or click to view references

The International System of Units (SI) — NIST Special Publication 330
National Institute of Standards and Technology (NIST). The SI Brochure (SP 330) is the definitive English edition of the BIPM SI tables. NIST’s edition lists the official constants and conversion factors tying inch-pound units to SI, which SwapUnits applies for length, mass, temperature, pressure, volume, and related conversions. See /standards/nist-si-tenfold for the complete decimal multiple/submultiple table. View source · View SI table

Results update as you type. Swap the direction to convert back from in² to ft².

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ft² to in² quick table

Multiply any row by the same factor to scale results. Use the converter above to enter exact values with your own units.

Square Foot (ft²)	Square Inch (in²)
0.25 ft²	36 in²
0.5 ft²	72 in²
1 ft²	144 in²
2 ft²	288 in²
5 ft²	720 in²
10 ft²	1,440 in²
25 ft²	3,600 in²
100 ft²	14,400 in²

in² back to ft²

Keep the reciprocal handy when double-checking calculations or undoing a conversion.

Square Inch (in²)	Square Foot (ft²)
0.25 in²	0.0017 ft²
0.5 in²	0.0035 ft²
1 in²	0.0069 ft²
2 in²	0.0139 ft²
5 in²	0.0347 ft²
10 in²	0.0694 ft²
25 in²	0.1736 ft²
100 in²	0.6944 ft²

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