Garden Calculators
Good gardens start with the right amounts of soil, seed and spacing. Cover raised beds, lawn seed, sod, plant spacing and landscape lighting.
Garden Calculator
Plan a garden layout, soil and plants in one place.
Plant Watering Calculator
Estimate how much water your plants need.
Tree Planting Calculator
Plan hole size, spacing and soil for tree planting.
Garden Bed Soil Calculator
Calculate the soil needed to fill your garden beds.
Raised Bed Calculator
Plan raised bed size, lumber and soil volume.
Seed Spacing Calculator
Set the right spacing between seeds and rows.
Lawn Seed Calculator
Estimate the lawn seed needed for your area.
Vegetable Garden Calculator
Plan beds and spacing for a vegetable garden.
Flower Bed Calculator
Plan size, soil and plants for a flower bed.
Boxwood Spacing Calculator
Set the spacing for a boxwood hedge.
Tree Light Calculator
Plan the lights needed for your trees.
Landscape Light Calculator
Plan fixtures and spacing for landscape lighting.
Garden Light Calculator
Plan the lights your garden needs.
Sod Calculator
Estimate the sod rolls needed to cover your lawn.
Lawn Mowing Calculator
Estimate mowing time and cost for your lawn.
Weed Barrier Calculator
Estimate weed barrier fabric for your beds.
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How to Use Our Garden Calculators
Follow four simple steps to turn your garden measurements into a clear material list.
Pick a calculator
Choose the garden calculator that fits your job, such as the Raised Bed or Garden Bed Soil calculator.
Enter your measurements
Add length, width and height, plus any material details the calculator asks for.
Check the result
Read the amount you need, with a waste allowance and the formula shown.
Plan your purchase
Use the figures to compare suppliers and order the right amount of soil, seed and plants.
Why Use Our Garden Calculators
Simple tools that save you time, and help you avoid over-buying or running short.
Built for garden projects
Every calculator in this category is made for garden jobs, so the inputs match what you measure on site.
Clear, checkable math
Each result shows the formula behind it, so you can verify the numbers before you buy.
Free, with no signup
Use every garden calculator as often as you like, without creating an account.
Garden Calculator FAQs
Quick answers to common questions about our garden calculators.
Are the garden calculators free?
Yes. Every garden calculator is free to use, and you do not need an account.
How accurate are the garden calculator results?
Results follow standard formulas and use the measurements you enter. Treat them as planning figures, and confirm structural details with local codes or a professional.
How much extra material should I order for a garden?
Most projects need 5 to 10 percent more than the exact figure to cover cuts, breakage and uneven ground.
Which garden calculator should I start with?
Start with the main Garden calculator for an overview, then open the specific tools for soil, seed, spacing and lighting as you plan each stage.
Browse More Categories
Explore calculators for the rest of your backyard projects.