Raised Bed Tool

Cinder Block Garden Bed
Calculator

Calculate the exact number of blocks for your raised vegetable or flower beds.

Wall Dimensions (Feet)

Block Specifications

Estimation Results

Enter dimensions to see results

Pro Tip

A standard 8x8x16 block actually measures 7 5/8" x 7 5/8" x 15 5/8" to account for 3/8" mortar joints.

Building Raised Beds with Concrete Blocks

Raised garden beds built from cinder blocks are incredibly popular because they are the perfect height for comfortable gardening and provide excellent drainage for your plants.

Standard Raised Bed Dimensions

Most gardeners build beds that are 4 feet wide and 8 to 12 feet long. A 4-foot width allows you to reach the center of the bed from either side without stepping on and compacting the soil.

  • 1 Course High (8"): Good for shallow-rooted vegetables like lettuce and herbs.
  • 2 Courses High (16"): Ideal for most garden plants, providing plenty of root space and reducing bending over.