Introduction
These are the questions people actually ask before buying chain link — about rolls, posts, gauges, gates, concrete, and cost — answered with the numbers, not sales talk. If you’re starting from zero, the complete guide walks the full estimating process first; the Chain Link Fence Calculator itself turns your fence length and height into a material list.
Materials and Sizing
How many 50-ft rolls of chain link do I need?
Subtract your total gate width from the fence length, divide by 50, and round up. A 140-ft mesh run needs 140 ÷ 50 = 2.8 → 3 rolls. In metric: 42.67 m ÷ 15.24 m = 2.80 → 3 rolls.
What do the gauge numbers mean?
Gauge is wire thickness — and the scale runs backward: lower number = thicker wire. 11.5 ga (0.113 in / 2.87 mm) is standard residential, 11 ga (0.120 in / 3.05 mm) is a step up, and 9 ga (0.148 in / 3.76 mm) is the heavier commercial standard. Thicker wire costs more and lasts longer. The full comparison is in the material guide.
What is the standard diamond size?
Two inches (50 mm), measured diagonally across the diamond. It’s the size virtually all residential rolls, fittings, and privacy slats are built around. Lighter residential fabric sometimes uses 2-1/4 in diamonds.
How tall should my chain link fence be?
Four feet (1.2 m) suits front yards and gardens, 5 ft (1.5 m) is a common all-rounder, and 6 ft (1.8 m) is the typical choice for privacy, dogs, and security. Commercial and sports fences run 8–12 ft (2.4–3.7 m). Check local height limits before deciding — front-yard limits are often lower than backyard limits.
Galvanized, aluminized, or vinyl-coated — which lasts longest?
All three protect the steel core; vinyl-coated (usually over galvanized wire) generally offers the best corrosion resistance and the most color options, aluminized sits in the middle, and plain galvanized is the economical baseline. In coastal or high-moisture areas, the upgrade pays for itself.
Posts, Rails, and Concrete
How far apart do chain link posts go?
Line posts are spaced 10 ft (3.05 m) on center — that’s the standard maximum. Posts per straight run = run length ÷ 10 + 1. Wider spacing lets the fabric sag between posts.
What’s the difference between line posts and terminal posts?
Line posts (typically 1-5/8 in pipe) just hold the fabric up between anchors. Terminal posts — corners, ends, and gate posts in heavier 2-3/8 in or 2-7/8 in pipe — anchor the tensioned fabric and carry gate loads. They get bigger concrete footings too.
How deep should chain link post holes be?
About a third of the above-ground post height, with a 24-in minimum for 4-ft fence — so 24–36 in for typical residential work. Gate posts and soft soils go deeper (36 in is the working rule for gates). Always set below the local frost line where frost heave is a factor.
How much concrete goes in each post hole?
A standard 9-in-diameter, 30-in-deep hole holds about 1.1 ft³ (0.031 m³) — roughly two and a half 60-lb bags. Larger terminal-post holes (12 in × 36 in) take about 2.36 ft³, or roughly five and a quarter 60-lb bags each. The cylinder math is derived in the formula-explained guide.
Do I need top rail, or is tension wire enough?
Top rail is the residential standard: it stiffens the fence, keeps the top line straight, and gives a finished edge. Bottom tension wire keeps the lower edge from bowing out. Some economical or temporary fences use top tension wire instead of rail, but rail is the better long-term choice.
How many tie wires do I need?
Plan one tie every 12–16 in per line post and every 24 in along the top rail. For a 150-ft run with 16 posts, budget roughly 300 ties — buy a bag of 100 plus a spare bag. They’re cheap; running out mid-job is not.
Gates
Do I subtract gate widths when calculating mesh?
Yes. Fabric doesn’t span gate openings, so subtract every gate’s width from the fence length before dividing by roll length. But still count the gate posts (two per gate, heavier pipe) and their concrete.
What size posts do gates need?
Gate posts are terminal posts: 2-3/8 in pipe minimum for walk gates, 2-7/8 in for double drive gates, set 36 in deep in oversized holes. The most common cause of a sagging gate is an undersized or shallow gate post — the common mistakes guide covers the failure pattern.
How much clearance does a gate need?
Leave 2–3 in of total clearance in the opening for hinges, latch, and seasonal movement. Build or order the gate to fit the finished opening — hang gates last, after posts are set and the real opening is measurable.
Cost and Installation
How much does a chain link fence cost?
Typical planning ranges: $7–$12 per linear foot in DIY materials for 4-ft residential fence ($15–$25/ft installed); $10–$16/ft DIY for 6-ft ($22–$35/ft installed). A 150-ft 4-ft fence with one double gate runs roughly $1,200–$2,200 in materials or $2,250–$3,750 installed. Gates, permits, and old-fence removal add on top. The cost guide prices a full example.
Can I install chain link myself?
Yes, on straightforward sites — it’s one of the most DIY-friendly fence types. A two-person crew can typically complete a 150-ft run in 18–22 working hours plus concrete cure time. Rocky soil, steep slopes, and long commercial runs are where hiring pays off. See the DIY vs pro guide.
How long does chain link last?
Galvanized residential chain link typically lasts 15–25 years; vinyl-coated and heavier-gauge fabric can reach 25–30+ years with decent drainage at the post bases. The posts usually outlast the fabric — and post-base corrosion from standing water is the most common early failure.
Do I need a permit for a chain link fence?
Often yes — many municipalities require permits for fences over a certain height (commonly 4 ft in front yards, 6–7 ft elsewhere), and HOAs frequently have their own rules. Requirements vary widely, so check with your local building authority and HOA before buying material. What’s typically regulated is summarized in the code compliance guide.
How do I handle a sloped yard?
Two options: step the fence (level sections that drop at each post — simplest to estimate: measure each step’s horizontal run) or rack the fabric to follow the slope (smoother look, needs flexible fabric and careful tensioning). Either way, keep posts plumb and measure horizontal runs, not slope distances.
Related Guides
- Complete Guide — the full estimating walkthrough with a worked example.
- Material Guide — gauges, coatings, posts, and hardware explained.
- Cost Guide — what materials and installed fences typically cost.
- Estimating Guide — how to measure your fence line correctly.
- Pro Tips — stretching, tensioning, and install-day advice.
- DIY vs Pro — when to build it yourself and when to hire.
Get Your Number
Questions answered — now get the quantities. The Chain Link Fence Calculator turns your fence length and height into rolls, posts, rail, tension wire, and concrete in seconds. Run your numbers, check anything unfamiliar against the answers above, and price the list with a couple of local suppliers.
Disclaimer: Calculator results are planning estimates based on the dimensions you enter. Actual material needs vary with site conditions, slope, gate hardware, and installation method. Verify quantities with your supplier and consult a licensed professional or your local building authority for code-related decisions.
