Triangular prism Volume Calculator
The triangle area times the length of the prism. Tents, roof attics and Toblerone boxes are triangular prisms.
V = ½ × b × t × l
Volume of the triangular prism
60ft³
- Surface area
- 124.111 ft²
- Triangle area = ½ × 4 × 3 = 6 ft²
- V = 6 × 10 = 60 ft³
Volume in other units
| m³ | 1.699 |
| liters | 1,699.01 |
| ft³ | 60 |
| yd³ | 2.2222 |
| in³ | 103,680 |
| US gallons | 448.831 |
| cm³ (mL) | 1,699,010 |
How to find the volume of a triangular prism
Volume: V = ½ × b × t × l. Surface area: SA = bt + l(b + 2s) (isosceles cross-section, s = √((b/2)² + t²)).
- Measure in one unit. The answer comes out in that unit cubed (ft³, m³).
- Substitute into the formula; the calculator shows the steps with your numbers.
- Read liters, gallons, cubic yards and more in the conversion table. 1 ft³ ≈ 7.48 US gallons ≈ 28.32 liters.
Questions people ask
How much space is in my attic?
With a symmetric gable roof, b is the attic floor width, t the ridge height and l the house length.
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