What’s the difference between cubic metres and tonnes for soil?

Cubic metres measure volume, tonnes measure weight. Multiply m³ by material density (e.g., dry topsoil ~1.3 t/m³) to get tonnes.

How do you calculate cubic meters of a cylinder (e.g., water tank)?

Use π × radius² × height. Radius and height in metres. Example: radius 1.2m, height 3m → 3.14×1.44×3 ≈ 13.57 m³.

Is this cubic meter calculator accurate for concrete orders in Australia?

It provides accurate estimates. Always add 5–10% waste allowance and confirm with your concrete supplier (2026 Australian standards).

How many litres in a cubic metre?

1 cubic metre = 1,000 litres. Our tool shows litres automatically.

Can I use this calculator for soil and landscaping in Sydney / Melbourne?

Yes — choose soil type density for tonnes conversion. Perfect for garden beds, raised planters and fill dirt projects.

How do I convert cm or mm to metres for cubic meter calculation?

Divide cm by 100, mm by 1000. Example: 250cm = 2.5m; 4500mm = 4.5m. Then use length × width × height.

🇦🇺 Cubic Meter Calculator Australia: Volume, Concrete & Soil Estimator 2026

Q: How do I calculate cubic meters of concrete for a slab?

Multiply length (m) × width (m) × thickness (m). For a 5m x 4m slab 0.125m thick: 5×4×0.125 = 2.5 m³. Use our calculator for instant results.

Calculate cubic meters instantly – perfect for concrete slabs, landscaping soil, shipping, and construction projects. Get tonnes conversion, litres, and step‑by‑step formulas. Trusted by Aussie builders, landscapers, and DIYers. Updated for 2026 building standards.

📐 Interactive cubic meter calculator

Choose shape, enter dimensions → volume (m³), weight (tonnes) & litres.

Rectangle / Slab

Cylinder / Round

Length (metres)

Width (metres)

Height / Depth (metres)

Material density (for tonnes conversion)

Estimated volume & weight

0.00 m³

📦 0 litres

⚖️ 0.00 metric tonnes

Based on density selection | Always add 5–10% waste for concrete/soil

How to calculate cubic meters (step‑by‑step)

Whether you're ordering concrete for a driveway, estimating soil for garden beds, or calculating shipping volume, the formula is simple: Volume (m³) = Length × Width × Height (all in metres). For cylinders: π × radius² × height. Follow these 2026‑ready steps:

Step 1: Measure all dimensions in metres – if using cm, divide by 100; mm divide by 1000.
Step 2: For rectangle: multiply L × W × H. Example: 6m length, 3m width, 0.2m depth = 3.6 m³.
Step 3: For cylinder: radius (half of diameter) squared × π × height.
Step 4: Use our tool above to avoid errors and get automatic tonnes conversion (essential for concrete & soil orders).

Pro tip (Australia 2026): When ordering concrete, round up to nearest 0.2 m³ and include 10% shrinkage/wastage. For soil, consider compaction factor (+15%).

Concrete cubic meter calculator – slabs, footings, columns

Planning a slab? Input length, width, thickness. Our calculator instantly shows cubic metres and tonnes. Australian concrete mix typically weighs 2.4 tonnes/m³. For a 4m × 6m slab 125mm thick: volume = 3 m³ → approx 7.2 tonnes of concrete. Perfect for residential & commercial builds (updated 2026 NCC standards).

Formula: m³ = L × W × D. Use the tool above with concrete density selected.

Soil cubic meter calculator – landscaping, fill dirt & garden beds

Whether you're in Sydney, Melbourne, Brisbane or Perth, calculating topsoil or fill dirt is easy. How to calculate cubic meters of soil: measure bed length × width × depth (m). Multiply by density (~1.3 to 1.6 t/m³) to get tonnes. Avoid over-ordering: our calculator handles both m³ and tonnes. For raised garden beds, always verify depth.

Example: 5m × 2m × 0.3m = 3 m³ of soil = about 4.2 tonnes (dry topsoil).

Cubic meters to tonnes: Australian material guide

Material	Density (t/m³)	1 m³ → tonnes	Common uses
Concrete (standard)	2.4	2.4 tonnes	Slabs, footings, driveways
Dry topsoil	1.3	1.3 tonnes	Garden beds, lawn
Wet soil / loam	1.6	1.6 tonnes	Landscaping fill
Sand (dry)	1.6	1.6 tonnes	Levelling, pavers
Gravel (20mm)	1.7	1.7 tonnes	Drainage, pathways
Road base / crushed rock	2.0	2.0 tonnes	Driveway base

Use density dropdown in calculator for real‑time tonne conversion.

Volume to cubic meters calculator: cylinder, pool, round tank

Need to calculate cubic metres for a round water tank, concrete pipe, or cylindrical footing? Switch to cylinder mode in our calculator. Input radius (half diameter) and height: m³ = π × r² × h. For swimming pools: measure average depth. Our cubic meter calculator cylinder tool also shows litres and tonnes if filled with water (density 1 t/m³). Ideal for rainwater tanks, silos, and columns.

📏 Quick tip: To convert from square metres to cubic metres, multiply area (m²) by depth (m). Our rectangular calculator already does that.

Australian specific insights: ordering concrete & soil in 2026

Concrete supply: Most suppliers require volume in m³, with minimum order 0.5 m³. Prices range from $280–$350/m³ (2026 estimates). Always add 5% waste.
Soil delivery: Landscape suppliers sell by cubic metre or tonne. Use our soil cubic meter calculator to avoid under/over ordering. Typical trailer holds 0.8–1.2 m³.
Construction code: NCC 2026 updates recommend higher strength concrete for bushfire zones – density remains 2.4 t/m³.
Concrete slab for shed / house: Use the calculator for accurate footing volume; 0.1m (100mm) thick for pathways, 0.125m for residential slabs.

✅ Instant checklist: how to calculate cubic meters without mistakes

Measure in metres (if cm/ mm convert)

Use our calculator for complex shapes

Always multiply L×W×H

Cylinder: π × r² × height

Factor waste (+10% concrete, +15% soil)

Frequently asked questions – Cubic meter calculator

❓ How do I calculate cubic meters of concrete for a slab?
Length (m) × width (m) × thickness (m). Use concrete density 2.4 t/m³ to get tonnes. Our tool handles it live.

❓ What's the difference between cubic meters and square meters?
Square meters (m²) measure area; cubic meters (m³) measure volume. To convert area to volume, multiply m² by depth.

❓ How many cubic meters in a standard tipper truck?
In Australia, a 6x4 tipper typically carries 8–12 m³ of soil or gravel.

❓ Can I calculate cubic meters from cm?
Yes, divide centimetres by 100 to get metres. Example: 250 cm = 2.5 m. Then apply formula.

❓ How to calculate cubic metres for irregular shapes?
Break into rectangles/cylinders, compute each volume and sum. Our calculator gives per‑shape accuracy.

❓ Is this concrete calculator suitable for post holes?
Yes — for round post holes use cylinder mode (radius and depth). Get m³ and concrete tonnes instantly.

❓ How do I convert cubic meters to litres?
Multiply m³ by 1,000. Our calculator shows litres automatically.

Disclaimer: This cubic meter calculator provides estimates only. Always verify with local suppliers, engineers, or building professionals. Material densities are typical values; actual weights may vary. TotalCalcHub is not liable for ordering errors. Updated 2026-03-23.