Engineered Wood Fiber Calculator

Use our tool to calculate how much engineered wood fiber (EWF) you need for your project.

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Mulch Calculator

Estimate the amount of engineered wood fiber you need for your project.

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How to Calculate Engineered Wood Fiber

Use the steps below to get the proper measurements needed for your project's surfacing needs.

  1. Measure the Area - To calculate how much mulch you'll need for your project, start by measuring the length and width of the desired area and multiplying them. This will give you the square footage.
  2. Determine the Depth - Depending on the type of project, there may be a required depth for your surface. Always refer to safety guidelines for your project to ensure you are properly selecting the required depth. For example, a playground surface needs to meet fall height requirements, which suggests 9-12 inches.
  3. Get the Results - Enter your measurements into our mulch calculator to determine how much engineered wood fiber you need for your project. If you have questions, please reach out to our team.
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Frequently Asked Questions

Engineered wood fiber (EWF) should be re-topped regularly to maintain proper safety levels, as it can compress, disperse, or decompose over time due to foot traffic, weather conditions, and natural settling.

The required depth for a playground surface using engineered wood fiber (EWF) depends on the fall height of the playground equipment, as well as safety guidelines set by the Consumer Product Safety Commission (CPSC) and American Society for Testing and Materials (ASTM). The goal is to ensure that the surface provides adequate shock absorption to minimize injury from falls. Learn more on our industry standards page. 

Engineered wood fiber (EWF) is more affordable upfront, offers a natural look, and requires regular maintenance due to compaction, while rubber mulch is more expensive initially but provides superior durability, less maintenance, and longer-lasting fall protection.

"KABOOM! is grateful for our longstanding partnership with Fibar! Fibar shares our values of ensuring that all kids have access to play. They are consistently supportive and responsive in making sure that the safety surfacing they provide arrives on time. Their support of our mission is appreciated and evident in the care they take to deliver quality surfacing and customer service."

Kathryn Lusk
KaBOOM!

"Rosalynn and I are grateful to Fibar Corporation for providing accessible ground cover for the playground in Plains..."

Former President Jimmy Carter

"...The delivery of the Fibar was flawless, and that I know in large part was due to you, your excellent organization and follow through..."

Sonia Blue, Walking Shield American Indian Society

"Congratulations! The Fibar System exceeds all of our stringent expectations. I’m convinced that this system gives us the optimum measure of playground surface safety."

Bob Burnett, Highlands School 
Edina, MN

"Moms with strollers can just zoom across [the Fibar surface], and it’s accessible to children in wheelchairs."

Christine Russell, Winner of United Cerebral Palsy’s Accessible Design Award/playground
Colorado Springs, CO