Rubber Chippings Coverage Calculator — How Much Do You Need?
Work out exactly how much rubber chippings you need with our free coverage calculators below — enter your length, width and depth and get an instant bulk bag recommendation with pricing. Rubber chippings are also known as rubber mulch, rubber play bark or play chippings — different names for the same recycled rubber product, and the coverage maths is identical whichever term you use.
Standard Rubber Chippings Calculator
For our 10–20mm standard playground rubber chippings — available in black from 300kg to 5,000kg.
Coloured Rubber Chippings Calculator
For our 20mm coloured rubber chippings — select your colour and the calculator links directly to the right variant.
How the coverage calculation works
The quantity depends on three measurements — length, width and depth. Rubber chippings weigh around 20kg per m² at a 50mm depth, so:
- Area (m²) = length × width
- Kg required = area × 20 × (your depth ÷ 50)
The calculators above handle this automatically.
If you've been using a bark calculator or bark chippings calculator to price the same area, the coverage maths works the same way — but the materials don't perform the same. Bark chippings decompose, fade and need topping up every 1–2 years; rubber chippings don't rot, don't blow away as easily and last 10+ years without replacement. The same area calculation that prices a bark mulch project prices a rubber one — the difference is you only buy rubber once.
What depth do you need?
For garden borders, pathways and decorative use, 40–50mm gives solid coverage and helps suppress weeds when laid over a permeable membrane. See our guide to installing rubber chippings for ground preparation advice.
For children's play areas beneath equipment, depth is a safety matter governed by BS EN 1177:2018. Required depths increase with the Critical Fall Height (CFH) of the equipment. Always confirm against the supplier's test certificate — decorative chippings are not a substitute for certified impact-attenuating surfacing.
Worked example
Covering a garden play patch 4m × 3m at 50mm depth:
- Area = 4 × 3 = 12m²
- Kg needed = 12 × 20 = 240kg
A 300kg bulk bag covers this comfortably with some to spare for levelling. For larger areas, a 1 tonne (1,000kg) bulk bag of rubber chippings covers roughly 50m² at 50mm depth. Use the calculator above for your exact dimensions.
Standard or coloured rubber chippings?
Coverage is identical for both — only the appearance and price differ. Our 10–20mm standard playground rubber chippings are the more economical option for play area rubber chippings and garden use; the 20mm coloured rubber chippings are available in 7 shades. Use the relevant calculator above for accurate pricing.
Frequently asked questions
How much rubber chippings do I need per square metre?
At a 50mm depth, approximately 20kg per m². Use the calculator above for your specific dimensions.
How much does 1 tonne of rubber chippings cover?
A 1,000kg bulk bag covers roughly 50m² at 50mm depth. Coverage reduces at greater depths.
What depth of rubber chippings should I use?
Around 40–50mm for decorative borders and pathways. For children's play areas, depth is set by the Critical Fall Height — surfacing must be certified to BS EN 1177:2018.
Are rubber chippings suitable as playground safety surfacing?
Decorative rubber chippings are not a substitute for certified fall protection. For fall-from-height areas, choose surfacing certified to BS EN 1177:2018 and obtain the test certificate.
What is rubber mulch — is it the same as rubber chippings?
Yes. Rubber mulch, rubber chippings, rubber play bark and play chippings are different names for the same product — shredded recycled rubber used as a decorative and play surface. The coverage calculation is identical: around 20kg per m² at a 50mm depth.
Does a bark calculator work for rubber chippings?
The area maths is the same — length × width × depth — but the weights differ, so use the rubber chippings calculator above for accurate bag quantities. Unlike bark, rubber doesn't decompose, so you won't need the annual top-up a bark calculation usually has to allow for.