Garden Calculators
The ultimate free tool library for professional landscaping, gardening, and DIY outdoor projects.
Stop guessing and start planning with precision. From grass seed and sod to soil volume and mulch coverage,
get accurate estimates instantly to minimize waste, save money, and build your perfect garden today.
Grass Seed Calculator
Calculate the exact weight of grass seed needed for new lawns or overseeding projects.
Use Calculator →
Sod Calculator
Estimate how many rolls or pallets of sod you need to cover your yard instantly.
Use Calculator →
Mulch Calculator
Determine the cubic yards or bags of mulch required for your flower beds and paths.
Use Calculator →
Soil Calculator
Calculate the volume of topsoil or dirt needed to fill holes or level ground.
Use Calculator →
Fertilizer Calculator
Find the right N-P-K ratio and total amount of fertilizer for healthy plant growth.
Use Calculator →
Plant Spacing Calculator
Optimize your garden layout by calculating exactly how many plants fit in your space.
Use Calculator →
Raised Bed Soil Calculator
Calculate soil mix volume specifically for rectangular or circular raised beds.
Use Calculator →
Potting Soil Calculator
Calculate how much potting mix is needed to fill your various containers and pots.
Use Calculator →
Compost Calculator
Estimate the perfect Carbon to Nitrogen (C:N) ratio to create a healthy compost pile.
Use Calculator →
💡 Pro Tip: Before using these calculators, measure your garden area in feet (Length × Width). Accuracy in measurement ensures you don’t overspend on materials.
Why Use Our Garden Calculators?
Gardening combines art with science. Guessing material quantities often leads to wasted budget or stalled projects. Our suite of calculators helps you plan with professional precision:
- Save Money: Avoid buying excess bulk materials like mulch, gravel, or soil.
- Better Growth: Apply the exact amount of fertilizer and seeds to prevent nutrient burn or overcrowding.
- Save Time: Get the numbers right the first time so you don’t have to make multiple trips to the garden center.
Frequently Asked Questions
What is the difference between Garden Soil and Potting Soil?
Potting soil is a sterile, lightweight mix designed for containers to ensure drainage. Garden soil is heavier and meant to be mixed with native earth for in-ground planting.
How deep should mulch be?
A standard depth is 2 to 3 inches. This suppresses weeds and retains moisture without suffocating plant roots. Too deep can cause rot; too shallow won’t stop weeds.
How do I calculate cubic yards?
Most bulk materials are sold by the cubic yard. Our calculators automatically convert your measurements (feet/inches) into cubic yards so you know exactly what to order.
Can I calculate for irregular shapes?
Yes. The best method is to divide your irregular garden shape into smaller squares or rectangles, calculate the area for each, and add them together.