Post and Rail Calculator

Transform your boundary, paddock, or driveway with a classic post and rail fence, use our Post and Rail Calculator to accurately estimate the posts, rails, and fixings you’ll need, as well as the Post and Rail Fencing cost. Whether you’re fencing a small garden edge or several acres, the tool helps you plan with confidence, reduce waste, and order the right quantities first time.

What is Post & Rail Fencing?

Post and rail is a simple, strong, and attractive fencing style made from vertical fence posts and horizontal rails. It’s ideal for agricultural land, equestrian paddocks, rural driveways, and natural-looking garden boundaries. Common configurations include 2-rail, 3-rail, or 4-rail setups using sawn, half-round, or machine-round components. Wire stock fencing can be added for stock-proofing without spoiling the open look.

How does the Post & Rail Calculator help?

Our calculator removes the guesswork by giving you a clear, itemised list of materials based on your fence length. You’ll be able to order with confidence and keep your project on schedule. Please note this calculator generates material quantities for a 3-rail fence.

You’ll get:

• Number of posts
• Number of rails
• Amount of nails needed

Expert tips for a professional finish

• Mark out corners first: set and plumb end/corner posts, then run a string line for straight, even bays.
• Choose UC4 posts: posts in ground contact should be UC4-treated; treat any cut ends with end-grain preservative.
• Mind your centres: wider post centres reduce posts but may increase rail deflection; 2.4m – 3.0m is a reliable sweet spot.
• Gates: allow for gate openings and add strainer posts, hanging sets, and gate furniture where required.