- How do I calculate the volume of a box or room?
- Measure the length, width, and height in metres, then multiply all three together. A room 5 m × 4 m × 3 m = 60 m³ (60,000 L). This is also used for HVAC sizing: a 10 m³/kW rule means a 6 kW unit for that room.
- How do I calculate the volume of a cylinder (e.g. water tank)?
- Use V = π × r² × h. A tank with radius 1.5 m and height 2 m has a volume of π × 1.5² × 2 ≈ 14.14 m³ (14,137 L). Useful for sizing water storage, boilers, or swimming pool pumps.
- What is the formula for the volume of a sphere?
- V = (4/3) × π × r³. A sphere with radius 2 m has a volume of ≈ 33.51 m³. Used for spherical tanks, gas domes, and architectural decorative elements where pressure distribution is important.
- How do I calculate the volume of a cone?
- V = (1/3) × π × r² × h. A cone with base radius 2 m and height 4 m has a volume of ≈ 16.76 m³. Common applications: grain silo tips, industrial funnels, and conical storage hoppers.
- How do I calculate the volume of a pyramid?
- V = (1/3) × base area × height. For a rectangular base: V = (1/3) × length × width × height. A pyramid with 4 m × 3 m base and 5 m height = (1/3) × 12 × 5 = 20 m³.
- How do I convert cubic metres to litres?
- Multiply by 1,000. So 1 m³ = 1,000 L, 0.5 m³ = 500 L, and 14.14 m³ = 14,140 L. This calculator shows both m³ and litres automatically in the results.
- How many litres in a cubic metre?
- Exactly 1,000 litres. One cubic metre equals one kilolitre. So 1 m³ = 1,000 L = 1,000,000 mL = 1,000,000 cm³. This is a key conversion for water tanks and pool calculations.
- How do I convert cubic metres to gallons?
- 1 m³ ≈ 264.17 US gallons or 219.97 UK (imperial) gallons. A 50 m³ pool holds approximately 13,209 US gallons. This calculator includes a gallon conversion in its results automatically.
- How do I calculate how much water a pool holds?
- For a rectangular pool, use V = length × width × average depth. An 8 m × 4 m × 1.5 m pool = 48 m³ = 48,000 L. For irregular shapes, divide into rectangles and sum the volumes.
- How do I calculate the volume of soil needed for a raised garden bed?
- Multiply length × width × depth. A 2 m × 1.2 m bed filled to 30 cm (0.3 m) depth needs 2 × 1.2 × 0.3 = 0.72 m³ of compost or topsoil. Add 10–15% extra for settling after watering.
- How do I calculate the volume of a shipping container?
- A standard 20-foot ISO container measures approx. 5.9 m × 2.35 m × 2.39 m ≈ 33.1 m³ internal volume. A 40-foot container is roughly 67 m³. Use the Box shape with your container dimensions to verify.
- How do I calculate aquarium volume in litres?
- Measure the tank in centimetres (length × width × height), multiply, then divide by 1,000 for litres. An 80 cm × 35 cm × 40 cm tank = 112,000 cm³ ÷ 1,000 = 112 L. This determines fish stocking and filter sizing.
- What is the difference between volume and capacity?
- Volume is the total 3D space occupied by a solid object. Capacity is the maximum amount a hollow container can hold. Both use the same units (m³, litres) but capacity refers specifically to the usable interior space.
- How do I calculate cubic feet from inches?
- Multiply length × width × height in inches, then divide by 1,728 (since 12³ = 1,728 in³ per ft³). Example: 24 in × 18 in × 12 in = 5,184 in³ ÷ 1,728 = 3 ft³. This calculator shows ft³ results directly from metres.
- How do I estimate concrete volume for a cylindrical pillar?
- Use V = π × r² × h. A pillar 0.25 m radius and 3 m tall needs π × 0.0625 × 3 ≈ 0.589 m³ of concrete. Always add 5–10% wastage when ordering. Use our Concrete Calculator for full material breakdown.