Measure twice.
Order once.
Length × width gives area. Multiply by depth for volume, keeping all dimensions in the same unit. Use interior dimensions for raised beds and round bag counts up.
A little planning. A lot more growing.
Good gardens
start with
better numbers.
Less guesswork, more growing. Work out how much soil to buy, how far apart to plant, and what your next garden project could cost.
✓ 35 free tools✓ No account needed✓ Runs in your browser
Make room for what grows.Practical tools for your patch of green.
Your garden, worked out
A tool for every next step.
From the first bag of soil to the final row of seedlings.
No matching tools. Try a different search or category.
From wondering to working
Three small steps. One clearer plan.
01 /
Bring your measurements.
A tape measure is a good place to start. Measure the inside of beds and use the units shown beside each field.
02 /
Make it your own.
Set your spacing, depth, bag size or local price. Adjustable inputs keep the answer relevant to your garden.
03 /
Take your plan outside.
Get quantities, practical rounding and an explanation of the formula. Check site conditions before buying.
A few things worth knowing
Grow your understanding, too.
Measure twice.
Give every plant
room to thrive.
Measure spacing from plant centre to plant centre. Leave room for access, mature growth and airflow. Our layout estimate uses half-spacing edge margins.
Put your roof's
rainfall to work.
Collection starts with roof footprint and rainfall depth. Account for collection losses, storage capacity and overflow when turning a volume estimate into a plan.
Fresh from the garden
Latest from our blog.
Ideas, practical advice and inspiration for your next growing project.
Loading the latest articles…
Good questions
A little clarity
before you dig.
Simple tools, with the assumptions out in the open.
Are all 35 calculators free?
Yes. All tools on this homepage can be used without an account. Select a calculator to open it and enter your measurements.
Do I need to enter personal information?
No. These calculators run in your browser. They do not ask for your name, email address or an API key, and the calculation code does not transmit your inputs.
How accurate are the results?
Geometric results depend on your measurements. Planting and purchase estimates also depend on the chosen assumptions. Check plant labels, supplier sizes and local conditions before ordering.
Can I use my own local prices?
Yes. Material and budget tools use prices you enter, rather than claiming to know current local prices. Estimates exclude unentered delivery, labor and tax charges.
Which units do the tools use?
Every input shows its unit. Material tools primarily use feet, inches, pounds and US gallons; climate tools use Celsius. Soil results also include cubic metres and litres.
Ready when you are
Make your next garden idea add up.
Pick a tool. Bring a few measurements. Find your starting point.