STRUCTURAL
Second moment of area
Area moment of inertia for section stiffness.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result20736 in⁴1 ft⁴ = 20736 in⁴
EVERYDAY · ENGINEERING · SCIENCE
ft⁴ to in⁴ Converter
Convert foot to the fourth power (ft⁴) to inch to the fourth power (in⁴). Enter a value for an instant result, or use the examples and reverse conversion below.
520units ready to convert
HOW IT IS CALCULATED
Convert through metre to the fourth power
Enter a foot to the fourth power value to calculate inch to the fourth power with full internal precision before display rounding.
Display PrecisionAuto · 6 significant digits
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| millimetre to the fourth powerfrom ft⁴ | mm⁴ | 8630970000 |
| centimetre to the fourth powerfrom ft⁴ | cm⁴ | 863097 |
| metre to the fourth powerfrom ft⁴ | m⁴ | 0.00863097 |
| inch to the fourth powerfrom ft⁴ | in⁴ | 20736 |
| foot to the fourth powerfrom ft⁴ | ft⁴ | 1 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
ft⁴ to in⁴ Conversion Reference
Foot To The Fourth Power (ft⁴) and inch to the fourth power (in⁴) are units of second moment of area. Use this page to convert in either direction.
Conversion Examples
| Foot To The Fourth Power (ft⁴) | Inch To The Fourth Power (in⁴) |
|---|---|
| 1 ft⁴ | 20736 in⁴ |
| 5 ft⁴ | 103680 in⁴ |
| 10 ft⁴ | 207360 in⁴ |
| 100 ft⁴ | 2073600 in⁴ |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
Reverse Conversion
in⁴ to ft⁴ (inch to the fourth power to foot to the fourth power)