Material & Quantity
The deterministic material & quantity cluster — the highest-demand fence queries: a fence calculator (line ft → posts + rails + pickets/panels + concrete bags), a fence post calculator (count + spacing), a picket / board count calculator, a fence panel calculator, a fence rail calculator, a concrete-per-post / post-hole bags calculator across 40/50/60/80 lb, a post-hole depth reference, a fence gate width & post calculator, and a fence area / paint-stain quantity calculator. A post depth here is a labeled planning typical + a concrete bag quantity, never a structural or geotechnical design — call 811 before you dig.
Confirm panel/picket dimensions and bag yield against your product and order a little extra (~10%) for waste, corners, terrain and uneven runs. Panel sizes, picket widths, gaps and bag yields vary by product and brand.
Typical industry planning values — NOT a structural/geotechnical design. Frost depth, soil, wind load and local code set the real post depth and footing; check your local building department and call 811 to locate utilities before you dig. A licensed engineer sizes load-bearing or high-wind fence posts.
Fence calculatorAll-in-one fence calculator: enter length, post spacing and style to get posts, sections, rails, pickets and concrete bags for the post holes, with the formula.Fence post calculatorHow many fence posts do you need? 100 ft at 8 ft spacing is 14 posts. Enter length, spacing, gates and corners to get the count and sections.Picket / board count calculatorPicket and board count calculator: enter fence length, picket width and gap to get how many pickets you need, with a waste allowance and the formula.Fence panel calculatorFence panel calculator: enter fence length and panel width to get how many pre-built panels and posts you need, with the formula and a worked example.Fence rail calculatorA 4 ft fence runs 2 rails and a 5-6 ft fence 3. Enter length, post spacing and rails per section to count the rails or stringers your fence needs.Concrete per post calculatorConcrete per fence post calculator: enter hole size, post width and bag size to get bags per post and the total for 40, 50, 60 and 80 lb bags.Post-hole depth referenceHow deep should fence posts be? A labeled planning reference: buried depth is about one-third of the above-ground height plus a 6-inch gravel base.Fence gate width & post calculatorFence gate width and post calculator: enter leaf width and gaps to get the rough opening, gate posts and the hinge, latch and drop-rod hardware count.Fence area / paint-stain calculatorFence stain and paint calculator: enter length, height, sides and coverage to get the face area and gallons of stain or paint you need, with the formula. The quantity questions these tools answer
The counts people look up most start here. How many fence posts do I need? For a straight run it is ceil(line ÷ spacing) + 1 — so 100 ft at 8 ft spacing is 14 posts — and the fence post calculator adds the gate, end and corner posts on top. How many rails for a 6 ft fence? Two rails carry a fence up to about 4 ft; a 5–6 ft fence runs three — the rail calculator multiplies that by your section count. Pickets follow their own pitch of width + gap (picket & board count), pre-built sections divide by panel width (panel calculator), and each post hole takes 2–4 bags of mix (concrete per post).
If you are starting from a bare yard rather than a measured line, first read how to measure a fence in linear feet, then work through how much fence material you need — the all-in-one fence calculator turns that single length into posts, rails, pickets and concrete in one pass.
Every Material & Quantity tool is calculated server-side — visible immediately — with its formula, a worked example and a reference table, and works on the measurements you take and the prices you enter from your own quotes. Background reading is in the guides.