A stone path winding through a colourful English cottage garden

Garden Calculators and Guides for Your Outdoor Space

Simple tools and practical guides to help you plan, build and maintain your garden

Calculators by project

Popular guides

All guides

Garden Material Deals

This season's best deals on garden materials — see all current offers

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Quote like a pro, before you leave the drive

Turn your calculated materials into a branded, customer-ready estimate in under a minute — free for gardeners and landscapers, no sign-up needed.

Explore the estimator tool

Got your own website?

Put these calculators on it — free. One line of code, works on WordPress, Wix, Squarespace or plain HTML, and updates itself automatically.

See the embed tools

How deep should you go?

The most-asked question in the yard, answered — recommended depths for topsoil, mulch, turf and concrete in one quick guide.

Read the full depth guide
Paul, full-time gardener and the voice behind Garden Calculator's guides

Meet the gardener

Real advice from Paul, a full-time gardener

Paul packed in a City career, retrained at Writtle College, and has gardened full-time ever since. Every note marked "Paul" in our guides comes off the back of an actual job — not a textbook.

Measure twice, order once.

Read Paul's story

Common questions

Yes — completely free, with no sign-up. The calculator covers topsoil, mulch, turf, grass seed, gravel, sand, concrete, fence panels, decking, patio slabs, railway sleepers, weed membrane and garden paint, all in UK units with bulk-bag and handy-bag pricing.