Run a gardening blog, a landscaping business site or a community allotment page? Give your readers a working calculator inside your own articles. Each of our 13 UK calculators embeds with one line of code — no sign-up, no cost, and your readers never leave your page.
Every embed shows just the calculator — no menus, no adverts — works beautifully on phones, and updates itself automatically whenever we improve it.
Choose the calculator that fits your article from the grid below — each one covers a single material, so it matches your topic exactly.
Hit 'Embed this calculator' on the card, then 'Copy embed code'. You get a ready-made iframe snippet with the credit line included.
In WordPress, add a 'Custom HTML' block and paste. On Wix, Squarespace or plain HTML, paste it where you want the calculator to appear. Done.
Free topsoil calculator. Enter your area and depth to get litres and m³, then compare bulk bag and handy bag prices to find the cheapest way to buy.
Free mulch calculator for bark, wood chip and composted mulch. Enter your beds' area and depth to get litres and the best-value bags to buy.
Free gravel calculator for paths, driveways and borders. Get litres and m³, plus optional stabilising grids and weed membrane — priced for best value.
Free turf calculator. Enter your lawn size to get the roll count with 5% cutting allowance — or switch to grass seed and compare the cost.
Free sand calculator for patio bedding, screeds and rendering. Enter area and depth for litres and m³, priced across bulk and handy bags.
Free fence panel calculator. Enter your fence run in metres and get whole 1.83m panels in lap or picket styles — singles vs trade packs priced.
Free decking calculator. Enter your deck size to get the board count with 10% cutting allowance, priced from real UK board sizes.
Free patio slab calculator. Enter your patio area to get whole slab counts with 10% cutting allowance, across 600x600 and other UK sizes.
Free sleeper calculator for raised beds, edging and retaining walls. We mix 2.4m sleepers and halves for the cheapest fit.
Free concrete calculator for post holes, shed bases and small slabs. Get litres and bag counts for post mix and ready-mix concrete.
Free grass seed calculator. Enter your lawn area to get the kilograms you need for new sowing or overseeding — priced across boxes and trade bags.
Free gravel driveway calculator. Enter your drive's size to get litres and bulk bags at the right depth — with stabilising grids and membrane priced in.
Free brick calculator. Enter your wall size for the exact brick or block count — 60 per m² single skin, 120 double, 10 blocks — with mortar priced in one tick.
Yes — completely free, forever, for any website. No sign-up, no API key, no usage limits. All we ask is that you keep the small credit line under the embed, which links back to gardencalculator.co.uk.