Shed Size Calculator
Estimate the footprint you need based on what you plan to store.
~30 sq ft each
~10 sq ft each
~8 sq ft each
~12 sq ft each
~15 sq ft each
~5 sq ft each
25% recommended for access
Recommended Shed Dimensions
How to Choose the Right Shed Size
Choosing a shed size is about more than just fitting your current equipment. Most homeowners find that they outgrow their storage space within 24 months of installation. This calculator helps you determine the "Static Square Footage" and adds a necessary buffer for maneuverability.
Understanding the Math
Our calculator uses industry-standard footprints for common outdoor items:
- Riding Mowers: Require significant floor space and a clear path to the door.
- The 25% Rule: We recommend adding at least 25% to your total item area. This ensures you have "walking paths" so you don't have to empty the entire shed just to reach a rake at the back.
- Vertical Storage: If you plan on using high-quality shelving, you can reduce your footprint, but remember that large items like mowers and snowblowers always require floor real estate.
Common Shed Sizes and Their Uses
8×10 (80 sq ft): Ideal for a push mower, garden tools, and a few bicycles. It is the most popular small-backyard choice.
10×12 (120 sq ft): The "Goldilocks" size. Fits a riding mower plus a workbench and significant wall storage.
12×16 (192 sq ft): Approaching workshop territory. Suitable for ATVs, motorcycles, or extensive hobbyist setups.
Example Calculation
If you have 1 Riding Mower (30 sq ft), 2 Bicycles (16 sq ft), and 1 Wheelbarrow (12 sq ft), your base area is 58 sq ft. Adding a 25% buffer (14.5 sq ft) brings you to 72.5 sq ft. In this case, an 8×10 shed would be the most practical standard size.