Convert cubic feet to cubic inches or back, with optional cubic yards, cubic meters, liters, cubic centimeters, and milliliter units.
Assumptions Assumptions
- Conversions are volume-to-volume only; no density or weight factors are considered.
- International definitions are used: 1 inch = 2.54 cm exactly; therefore 1 in³ = 16.387064 cm³ exactly.
- Core factors: 1 ft³ = 1728 in³; 1 yd³ = 27 ft³; 1 m³ ≈ 61023.74409473229 in³; 1 L = 1000 cm³ ≈ 61.02374409473229 in³; 1 mL = 1 cm³.
- Results use up to 6 decimal places, or scientific notation for very small or large values.
When to Use This Calculator
- Converting container, box, or room volumes between ft³ and in³.
- Shipping, storage, HVAC/duct sizing, aquarium/tank volume estimates.
- Quick cross-unit checks involving yd³, m³, liters, cm³, and mL.
Input Definitions
- Volume — enter a nonnegative quantity and choose ft³, in³, yd³, m³, L, cm³, or mL.
- Convert to — choose the desired result unit, then select Calculate.
- Conversions — in³ = ft³ × 1728; ft³ = in³ ÷ 1728. General: output = input × (source_to_in³ ÷ target_to_in³).
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ft^3 to Inches Formula
The following formulas convert cubic feet to cubic inches and back using the International inch/foot definitions.
in³ = ft³ × 1728
ft³ = (in³) / (1728)
- 1 ft³ = 1728 in³
- 1 yd³ = 27 ft³ = 46,656 in³
- 1 m³ ≈ 61,023.7441 in³
- 1 L = 1000 cm³ ≈ 61.0237441 in³; 1 cm³ = 1 mL
How do you convert cubic feet to cubic inches? Multiply cubic feet by 1728 to get cubic inches.
How do you convert cubic inches to cubic feet? Divide cubic inches by 1728 to get cubic feet.
ft^3 to Inches Conversion Table
| Cubic Feet (ft³) | Cubic Inches (in³) |
|---|---|
| 1/16 | 108 |
| ⅛ | 216 |
| 1/6 | 288 |
| ¼ | 432 |
| ⅓ | 576 |
| ⅜ | 648 |
| ½ | 864 |
| ⅝ | 1,080 |
| ⅔ | 1,152 |
| ¾ | 1,296 |
| ⅞ | 1,512 |
| 1 | 1,728 |
| 1¼ | 2,160 |
| 1⅓ | 2,304 |
| 1½ | 2,592 |
| 1¾ | 3,024 |
| 2 | 3,456 |
| 2½ | 4,320 |
| 3 | 5,184 |
| 4 | 6,912 |
| * US customary (International): 1 cubic foot = 1728 cubic inches. | |
Example Problem
Convert 2.5 ft³ to in³.
Use the formula: in³ = ft³ × 1728.
in³ = 2.5 × 1728 = 4320 in³
