Fence Materials Calculator
How many fence panels and posts do you need for your garden? Our simple calculator does all the hard work for you. Enter some details below and we will generate a list of everything you need.Installation Service
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Frequently Asked Questions
How do I measure my garden for a new fence?
Measure the total length of the boundary line in either feet or metres using a long tape measure. To work out how many panels you need, you divide the total length by the width of a standard panel plus the width of one post. Our calculator handles the exact maths for you, ensuring the correct allowance for the final end post.
Are standard UK fence panels exactly 6ft wide?
Usually, yes! Most standard UK fence panels are manufactured to be exactly 6ft wide, which equates to 1.83 metres (1830mm). It is important to use this specific metric measurement when mapping out your post holes to ensure the panels fit snugly without leaving gaps or requiring you to trim the timber.
How deep should I set my fence posts into the ground?
As a general rule of thumb, fence posts should be buried 2ft (600mm) into the ground to provide adequate stability, particularly to withstand high winds. This means if you are aiming for a fence height of 6ft, you will need to purchase 8ft (2.4m) posts.
Do I really need to use gravel boards?
While not strictly mandatory, gravel boards are highly recommended. They lift the timber fence panels off the ground, protecting them from soil moisture, damp, and rot. This significantly extends the lifespan of your fencing. They typically come in 6-inch (150mm) or 12-inch (300mm) heights, with the taller option being particularly useful for leveling fencing on sloped or uneven ground.
How much post mix do I need per fence post?
For standard 8ft posts carrying a 6ft fence, we recommend using two 20kg bags of post mix (or Postcrete) per hole. This ensures a solid, secure anchor. For smaller fences (3ft or 4ft), one and a half bags per hole is usually sufficient.
What is the maximum legal height for a garden fence in the UK?
In the UK, the maximum height for a garden fence or wall without requiring planning permission is typically 2 metres (approximately 6.5 feet) from ground level. However, if your fence fronts a public highway or public footpath, the permitted height drops to 1 metre. If you are unsure or live in a conservation area, it is always best to check with your local council before ordering materials.
Should I choose concrete or timber fence posts?
Concrete posts offer maximum durability and will not succumb to rot, making them a low-maintenance, long-term investment. They also feature slotted channels, making it easy to slide replacement panels in down the line. Timber posts offer a more traditional, seamless aesthetic that blends naturally into the garden, but they will eventually require treatment or replacement due to ground exposure.
