How to Estimate How Much Bark/Chip You Need: Using the Calculator + Bulk vs Bag Comparison

If you’ve ever started a garden project, you’ll know how tricky it can be to estimate exactly how much bark or wood chips you actually need. Buy too little, and you’re running back for more. Buy too much, and you end up with leftover bags cluttering your shed after spending more than you needed to.

At Bark UK Online, we want to take the guesswork out of the process. That’s why we created a landscaping calculator to help you work out exactly how much bark or wood chip your project requires. In addition, we’re also here to help you decide whether to buy in bags or bulk, so you get the amount you need without the stress you don’t need.

Using Our Landscaping Calculator

Calculating the amount of bark needed is straightforward once you know your garden’s measurements. Here’s the step-by-step process we recommend:

Step 1: Measure your area – Multiply the length by the width of the space you want to cover. If it’s irregular, divide it into smaller rectangles and add them together.

Step 2: Decide your depth – For flower beds, 5–10cm is typical. For paths or play areas, you might go slightly deeper.

Step 3: Enter your measurements – Pop the numbers into our calculator. It will convert your measurements into the exact volume you need, usually in litres or cubic metres.

Example: A 2m × 3m flower bed at 5cm depth will need roughly 300 litres of bark. Thinking bigger? Then 1m³ (1,000 litres) covers approximately 20m² at 50mm depth. For smaller spaces, our 70L bags are perfect, easier to handle and ideal for DIY projects.

Bulk vs Bag: Which Option Works Best?

Once you know the quantity you need, the next decision is whether to buy bagged bark/chippings or bulk. Both have their benefits.

Bagged Bark and Chippings

Our bagged bark chippings are ideal for smaller areas or precision projects. Advantages include:

• Easy handling and storage

• Perfect for flower beds, borders, or patios

• Spreadable in sections for flexibility

Tip: Use 70L bags for small garden areas. Two or three bags might be enough for a typical flower bed or pathway.

Bulk Bark

For larger gardens or multiple projects, bulk orders are cost-effective and convenient. Bulk gives you:

• Better value for money on larger areas

• Less packaging waste

• Enough material for long-term projects

We offer bulk bags in sizes from 1,000L to 2,000L, perfect for covering medium to large areas in one go.

The Best Way to Use Bark or Wood Chippings in Your Garden

Once you have your bark or chipping, here’s how to make the most of them:

• Mulching: Spread around plants, trees, or shrubs to conserve moisture, suppress weeds, and regulate soil temperature. Keep the bark slightly away from stems and trunks to avoid rot.

• Pathways: Lay wood chippings over a weed barrier for attractive, mud-free paths.

• Play Areas: Ensure sufficient depth for cushioning. Generally allow 5–10cm depending on the type of wood chip.

Pro tip: For long-lasting mulch, refresh your bark layer annually. This keeps beds looking neat, suppresses weeds, and ensures plants receive consistent moisture.

Sustainable Tip: Bark and wood chippings can also be composted. Shred, mix with green and brown materials, and turn regularly. After a few months, you’ll have nutrient-rich compost to enrich your garden soil.

FAQs: Estimating Bark and Chips

How do you calculate landscaping areas and volumes?

Measure your area, choose the depth, and multiply: Length × Width × Depth. Our calculator does all the maths for you.

How to calculate landscaping materials?

Enter your measurements into the calculator to convert them into litres or cubic metres. Then choose between bagged or bulk based on your project size.

What area will 100 litres of bark cover?

It depends on the depth:

• 5cm depth: roughly 2m²

• 10cm depth: roughly 1m²

Can you mix bark types for one project?

Yes. Mixing hardwood and softwood bark or different coloured chippings can add visual interest. Just keep depth and coverage calculations consistent across types.

Is it better to buy slightly more than calculated?

For most projects, it’s wise to round up slightly. This ensures full coverage and avoids gaps, especially in irregular-shaped beds or pathways.

Ready to Get Started?

Estimating bark or wood chip requirements doesn’t have to be stressful. Use our calculator to work out the right amount, then decide whether bagged bark/chippings or bulk works best for your garden.

We’re a well-established Bedfordshire family business with years of experience in supplying high-quality bark and wood chips. Whatever your project, we’re here to help you get it right the first time. No guesswork, no waste, just a garden that looks great.

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