Estimate all materials needed for a fence project. Calculates posts, rails, pickets, concrete for post holes, and nails/screws based on fence length and height.
Building a fence is a substantial materials calculation: posts, rails, pickets (or panels), concrete for post holes, fasteners, gate hardware, and stain or paint. Underestimating any one component means a return trip mid-project. This calculator handles the basic counts for a typical wood picket fence — posts at standard spacing (usually 8 ft on center), 2-3 horizontal rails per section, and enough pickets to cover the length.
A 100-foot, 6-foot-tall wood privacy fence typically needs about 13 posts (one every 8 ft + corners), 39 rails (3 per 8-ft section), 343 pickets (3.5" wide at 100 ft = 343 pickets), 13-26 bags of concrete (1-2 per post), and a few pounds of galvanized nails or screws. Materials cost ~$10-20/linear foot for cedar pickets, $5-12/linear foot for pressure-treated pine, $20-40/linear foot for composite. Add installation labor ($15-30/linear foot for typical residential pro install).
The biggest cost driver is the wood species. Pressure-treated pine is cheapest ($5-8/linear foot installed); cedar adds 30-50% but lasts longer and looks better aging; composite or vinyl doubles the cost but needs zero maintenance for 25+ years.
**Scenario:** 200 ft of 6-ft tall pressure-treated pine privacy fence in backyard. **Calculation:** Posts: 26 (200/8 + 1, round up). Rails: 25 × 3 = 75. Pickets: 200 × 12/3.5 = 686. Concrete: 39 bags. At material costs ($12/post, $8/rail, $2.50/picket, $5/bag): $312 + $600 + $1715 + $195 = $2822 lumber + concrete. Plus fasteners ($75), one gate kit ($150), stain ($150): ~$3200 materials. **Result:** ~$3200 materials for DIY install. Pro install would add $3000-6000 in labor. Pressure-treated pine offers good value but requires staining/sealing every 2-3 years. Lifespan 15-20 years with maintenance.
**Scenario:** 50 ft of 4-ft cedar picket fence as front yard accent. **Calculation:** Posts: 50/8 + 1 = 8. Rails: 7 × 2 = 14. Pickets: 50 × 12/3.5 = 172. Concrete: 12 bags. At cedar pricing ($25/post, $15/rail, $4/picket): $200 + $210 + $688 + $60 = $1158. Plus fasteners, gate, finish: ~$1400 materials. **Result:** ~$1400 in cedar fence materials for accent fence. Cedar weathers to silver gray naturally; stain to maintain warm color. Lifespan 15-25 years without ground contact issues. Decorative gates add curb appeal.
**Scenario:** 150 ft of 6-ft tall composite privacy fence with low-maintenance materials. **Calculation:** Composite is sold as panels (6×8 ft typical) plus posts. Need: 19 panels + 20 posts + post caps + brackets. At composite kit pricing (~$200/panel = $3800), plus $35/post × 20 = $700, plus mounting hardware ($300): ~$4800 materials. **Result:** ~$4800 materials for composite privacy fence. Twice the cost of pressure-treated pine, but zero maintenance for 25+ years. No staining, no warping, no rot. Long-term cost (purchase + maintenance over 25 years) often favors composite over wood for landlords and long-term homeowners.
**Use fence calculations for:**
- **Privacy fencing**: most common residential application. - **Pet containment**: choosing height and material for specific pets. - **Pool fencing**: meeting safety codes. - **Property boundary marking**: legal demarcation. - **Decorative gardens**: shorter ornamental fences. - **Security fencing**: tall fences with gates and locks.
**Material selection guide:**
| Need | Material | |---|---| | Lowest upfront cost | Pressure-treated pine | | Premium look + reasonable cost | Cedar | | Premium look + premium price | Redwood | | Zero maintenance | Vinyl or composite | | Security with visibility | Aluminum or wrought iron | | Maximum security | Chain link with razor wire (commercial) | | Pool barrier code compliance | Pool-rated fencing per local code |
**Permit considerations:**
- Most jurisdictions require permits for fences over 6 feet tall. - HOAs often have height, material, and style restrictions. - Setback requirements: typically 0-6 inches from property line. - Pool fencing: separate code requirements (self-closing/latching, no climbing aids). - Front yard fences: often restricted to 3-4 ft height.
**Installation tips:**
- **Post depth matters most**: shallow posts heave with frost. - **Set corners first**: stretch string to align middle posts. - **Concrete tip**: dry-pour concrete + water in hole vs. mixing in wheelbarrow saves time. - **Plumb every post**: 4-foot level on multiple sides. - **Crown rails up**: install with arch curving upward. - **Picket gaps**: 3/8" between pickets allows for wood expansion. - **Don't over-tighten screws/nails**: wood swells and contracts.
**Maintenance schedule:**
- Pressure-treated pine: stain/seal every 2-3 years. - Cedar/redwood: stain/seal every 3-5 years (or let weather naturally). - Vinyl/composite: power wash annually. - Metal: inspect for rust spots, touch up paint. - All: check posts annually, replace damaged pickets, tighten loose fasteners.
**Gate considerations:**
- Single gate: 3-4 ft wide for walk-through, 4-5 ft for wheelbarrows. - Double gate: 8-12 ft total for vehicle access. - Hardware: heavy-duty hinges, strong latch, optional lock. - Sagging prevention: anti-sag kit ($25) or diagonal cable. - Post for gate: 6×6 minimum (vs 4×4 standard) for strength.
**Common code requirements:**
- Pool fencing: minimum 48 inches tall, self-closing gate, no climbable horizontal members under 45 inches, vertical openings ≤ 4 inches. - Property line setback: vary by jurisdiction (0 to 6 ft). - Front yard height: 3-4 ft typical. - Backyard height: 6-8 ft typical max. - Specific neighborhoods: check HOA covenants.
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Posts Needed
14
Pickets Needed
364
Picket Cost
$1,092.00
| Item | Quantity | Note |
|---|---|---|
| Fence Posts | 14 | 8 ft long (4x4) |
| Fence Sections | 13 | 8 ft spacing |
| Rail Boards | 39 | 3 rails x 13 sections (2x4) |
| Pickets | 364 | 3.5" wide x 6 ft tall |
| Concrete Bags (50 lb) | 28 | 2 bags per post |
| Screws/Nails | 45 lbs | Galvanized or stainless |
| Picket Cost | $1,092.00 | $3.00 each |