Fence Picket Calculator
Estimate the number of fence pickets needed for a straight fence run.
Calculation example
Inputs: Fence Length (ft): 100 ft, Picket Width (in): 5.5 in, Gap (in): 1.5 in
Result: 172 pickets
A 100 ft fence with 5.5 inch pickets and a 1.5 inch gap needs 172 pickets in this simplified straight-run calculation.
Formula
Pickets needed = fence length in inches รท (picket width + gap), rounded up.
How to use this calculator
Convert fence length to inches and divide by the picket width plus the gap, then round up.
Before you calculate
Measure the project dimensions as accurately as practical and keep all measurements in compatible units. For material products, use the coverage, yield, density, or package size stated by the manufacturer or supplier rather than a generic assumption.
Choose the waste allowance based on the project shape, installation method, cutting requirements, and material characteristics. A simple rectangular estimate may need adjustment for openings, corners, slopes, joints, patterns, compaction, or other site conditions.
Understanding the result
The calculator provides a planning estimate based on the inputs shown above. It is not a substitute for project drawings, structural design, manufacturer instructions, or local requirements. Before ordering, compare the calculated quantity with the supplier's package sizes and ordering units.
Tips
- Check the actual picket width and desired spacing before ordering.
Frequently asked questions
How are pickets counted?
Fence length is divided by picket width plus gap and rounded up.
Do gates affect this result?
This basic calculator models a straight run only.
Related calculators
Use compatible units and verify estimates against project specifications, local requirements and manufacturer instructions.