Fencing Accessories
Tools
DeWalt
$5-$20

Fence Post Levels for Perfectly Plumb Post Installation

Fence post levels are L-shaped or T-shaped levels that strap directly to fence posts, freeing both hands for bracing and fastening while checking plumb on two adjacent faces simultaneously. Unlike a standard level that must be held against each side individually, a post level reads two planes at once and stays attached to the post throughout the setting process. This simple tool eliminates crooked posts and is essential for anyone installing fence posts, deck posts, or mailbox posts.

Key Features

  • Reads two planes simultaneously
  • Straps to post hands-free
  • Fits 4x4 and 6x6 posts
  • Elastic strap attachment
  • High-visibility vials
  • Durable ABS construction

Specifications

Type: L-shaped or T-shaped | Vials: 2 or 3 (plumb on 2 faces + optional level) | Fits: 3.5-5.5 in posts | Strap: Elastic with hook | Material: ABS plastic | Accuracy: 0.029 in per inch

Best For

Setting fence posts
deck posts
mailbox posts
and sign posts perfectly plumb during installation.

Compatible Materials

Pressure-treated 4x4 posts
Pressure-treated 6x6 posts
Cedar posts
Metal fence posts
Composite posts
Round posts (with adapter)

Pros & Cons

Pros

  • ✓ Hands-free operation
  • ✓ Reads two planes at once
  • ✓ Inexpensive
  • ✓ Fits multiple post sizes
  • ✓ Elastic strap is fast
  • ✓ Durable plastic construction

Cons

  • ✗ Less accurate than precision levels
  • ✗ Strap can slip on wet posts
  • ✗ Not for round posts without adapter
  • ✗ Vials can bubble in extreme heat
  • ✗ Limited to post applications

Installation Tips

Strap the level to the post before placing it in the hole. Check plumb after each shovel of concrete or dirt. Adjust the post by tapping the top with a rubber mallet. Brace the post with angled 2x4s staked to the ground until concrete sets. Recheck after 10 minutes as concrete settling can shift the post.

Frequently Asked Questions