Cubic Metres to Tonnes Composted Bark
Instantly and accurately calculate the weight of composted bark, bark mulch, and wood chips in tonnes based on volume (m³). Essential for landscaping and gardening.
Convert Bark Volume to Weight
Enter the volume of your bark or mulch in cubic metres below to get an instant, accurate estimate of its total weight in metric tonnes.
Bark Weight Estimator
Fill in your garden or project details to see the estimated weight breakdown
Length × Width × Depth of your area
Select the specific material type
Standard UK industry average density
Estimated Total Weight
Breakdown based on standard landscaping densities
Common Bark & Mulch Densities
Standard approximate densities for common UK landscaping and gardening materials. Use this to understand how different bark products compare in weight.
| Material Type | Density (Tonnes/m³) | Density (kg/m³) | Common Use |
|---|---|---|---|
| Composted Bark | 0.40 | 400 | Soil conditioning, vegetable beds, general mulching |
| Fine Bark Mulch | 0.35 | 350 | Decorative borders, weed suppression, moisture retention |
| Coarse Bark Chips | 0.45 | 450 | Pathways, play areas, heavy-duty weed control |
| Fresh Wood Chip | 0.50 | 500 | Bulk landscaping, composting, temporary paths |
Bark Conversion FAQ
Everything you need to know about converting landscaping volumes to weight and ordering bark products.
One cubic metre of composted bark typically weighs around 0.40 tonnes (400 kg). However, this can vary between 0.35 and 0.45 tonnes depending on the moisture content and how finely the bark is shredded.
Yes, significantly. Bark mulch and composted wood products are highly absorbent. Wet or freshly rain-soaked bark can weigh 20% to 30% more than dry, stored bark due to water retention.
First, calculate the volume in cubic metres by multiplying the length, width, and desired depth of the area (all in metres). For example, a 10m x 5m area at 0.05m (5cm) deep equals 2.5 m³. Then, multiply this volume by the density (e.g., 0.40) to get the weight in tonnes.
Fresh wood chips can actually be heavier than composted bark when first delivered because they contain a high amount of natural moisture. Composted bark is more broken down and denser, but is often drier, though it compacts more over time.