Fencing & Borders Calculators
Calculate fence panels, posts, concrete, trellis, edging, and garden border materials.
Fence Panel Calculator
Calculate how many fence panels you need for your boundary.
Fence Post Calculator
Work out the number of fence posts and spacing for your fence run.
Gravel Board Calculator
Calculate gravel boards needed to protect fence panels from rot.
Trellis Calculator
Work out trellis panel quantities and fixing requirements.
Edging Calculator
Calculate lawn or border edging quantities for straight and curved runs.
Sleeper Calculator
Work out how many railway sleepers you need for raised beds or retaining walls.
Border Edging Calculator
Calculate decorative border edging for flower beds and paths.
Post Concrete Calculator
Work out how much postcrete or concrete you need for fence posts.
Fence Paint Calculator
Calculate fence paint or stain needed for panels and posts.
Gate Width Calculator
Find the ideal gate width and calculate hardware requirements.
10 free calculators in Fencing & Borders
Planning Fences and Garden Borders in the UK
Garden fencing is one of the most common home improvement projects in the UK, with standard fence panels measuring 1.83m (6ft) wide and available in heights from 0.9m to 1.8m. Under permitted development rules, rear garden fences can be up to 2 metres tall without planning permission, while front boundaries are limited to 1 metre. Our fence panel calculator and fence post calculator help you work out exact quantities for your boundary, including the concrete posts or timber posts needed at standard 1.83m centres.
UK weather takes a real toll on garden fencing. Wind, rain, and ground moisture mean that timber posts should always be set in concrete at least 600mm deep. Use our post concrete calculator to work out how much Postcrete or ready-mix you need per post. Gravel boards are essential for protecting the bottom of fence panels from damp soil and rot, and our gravel board calculator ensures you order the right number for your run.
Beyond fencing, garden borders and edging help define planting areas and keep lawns tidy. Railway sleepers remain popular for raised beds and retaining walls, typically sold in 2.4m lengths. Our sleeper calculator works out quantities for stacked constructions, while the edging calculator covers everything from Victorian rope-top edging to modern steel lawn strips. For finishing touches, the fence paint calculator helps estimate treatment quantities — most UK fence paints cover around 4-6 square metres per litre depending on the porosity of the timber.