Sleeper raised bed calculator
Your raised bed, planned in a minute.
Pick the size. We count the sleepers, plan every cut, estimate the topsoil and add it all to your basket.
Popular sizes
Your raised bed
sleepers 200 × 100mmCut list
- Delivered from next day, Mon–Fri
- Or pre-order and collect the same day
Assumes: long sides run the full length; short sides fit between them (width minus 200mm); 5mm per saw cut; posts 300mm into the ground; topsoil at 1.3–1.5 tonnes per m³. Fix with 150–200mm timber screws (not supplied).
Good to know: our calculators are accurate, but they work on the assumptions shown. Wood is a natural material, so it can swell, shrink, bend and vary slightly in size. Please check your own measurements before you order, and add a little extra if you're unsure.
Sleepers on the same van as your fencing
“Pleased with my order. The fencing is perfect. Sleepers arrived on the same delivery. Right on time.”
“Very pleased with my delivery. Polite. Trustworthy. Kept me informed all along the way.”
“Fast and easy service to order fence boards and get them delivered. Admin and delivery staff fantastic to deal with.”
From idea to built in three steps
- Pick your sizeLength, width and how many sleepers high.
- Add it in one tapSleepers and posts go straight in your basket.
- Choose your dayDelivered from next day, or pre-order to collect the same day (subject to stock).
Raised bed questions
How many sleepers for a raised bed?
Each course needs two long sides and two short ends. A 2.4 × 1.2m bed two high uses six 2.4m sleepers: four full lengths for the sides, and two each cut into a pair of 1m ends.
How high should a raised bed be?
One sleeper (200mm) for borders, two (400mm) for most veg, three (600mm) if you want less bending.
Do I need corner posts?
Not usually for one or two courses on firm ground. For three high, posts inside the corners stop the sides bowing.
How much topsoil will I need?
The builder shows the volume and an estimate in tonnes. Ask us about topsoil when you order.
Your bed, counted and cut. Add it now.
- Sleepers and cuts worked out
- Delivered from next day, Mon–Fri
- Or pre-order and collect the same day
“Pleased with my order. The fencing is perfect. Sleepers arrived on the same delivery. Right on time.” P Jeremy, Cramlington