How to Hang a Hammock Outdoors | The Right Way

To hang a hammock outdoors, you need two sturdy trees about 15 feet apart, wide tree straps, and a 30-degree angle.

Hanging a hammock seems simple, but the details decide whether you get a relaxing sway or a sore back and damaged trees. The core method boils down to choosing the right spot, wrapping wide straps around two healthy trees, and adjusting the tension until the hammock has a gentle sag with its lowest point about 18 inches off the ground.

Choosing the Right Trees and Spot

The right anchors make the whole setup safer and more comfortable. Look for two healthy, living trees with trunks at least 6 inches in diameter, per REI’s guidance. Avoid anything dead, rotting, or showing signs of instability, and check for dead branches overhead that could fall.

Spacing matters. REI’s experts note most people hang successfully with trees roughly 10–15 feet apart, while Home Depot’s guide suggests looking for trees about 14–16 feet apart. A practical rule: aim for trees about the length of your hammock, plus a little slack for the straps. If the trees are too close, the hammock sits too upright; too far apart and you’ll struggle to get the right sag.

Also consider the ground beneath you. Clear away rocks and debris, and make sure the ground is stable. REI also advises setting up away from water sources and using an already established campsite to minimize your impact.

Picking the Right Straps and Attaching Them

Never hang a hammock with thin rope or cord wrapped directly around a tree. That cuts into the bark and damages the tree. REI recommends straps at least 0.75 inches wide, noting that 1.5 inches is even better. Some public parks and campgrounds require straps that are 2 inches wide, so check the local rules before you go.

To attach the straps, wrap each one around a trunk at about the same height—chest level is a good starting point. Thread the loose end through the loop at the strap’s end and pull it snug, but not so tight that it digs into the bark. Then clip the hammock’s carabiner or hardware to the strap’s loops.

Before you climb in, give the setup a solid tug test. Verify every buckle, knot, and carabiner is secure before committing your full weight.

Getting the Angle and Height Right

The angle of the straps and the height of the hammock are what turn an awkward rope tangle into a comfortable bed. REI’s guidance is to aim for a strap angle of about 30 degrees from horizontal. That angle mimics a natural sitting position and reduces the load on the trees and hardware.

Your target low point sits about 18 inches off the ground, per REI and hammock maker ENO’s guidance. That height is low enough to make getting in and out safe but high enough that you won’t drag on the ground. A good rule of thumb is to start with the straps about 5 feet high on the trees and then adjust from there, as ENO suggests.

When you sit in the hammock, it should form a gentle, banana-like curve—not a tight, flat line. Sag is your friend. A hammock pulled too tight is uncomfortable and puts extra strain on the anchors.

If you’re considering a hammock for your backyard but lack two suitable trees, you might prefer a model that comes with its own support structure. Our roundup of the best backyard hammocks with stands covers tested options that set up anywhere.

Common Mistakes and How to Avoid Them

Most hanging problems come down to a few recurring errors. Here’s what to watch for:

• Using dead or weak trees. The tree needs to be alive and healthy to safely hold your weight. Check for signs of rot or damage.
• Thin cord instead of straps. This damages the tree and creates a safety risk. Always use wide, tree-friendly straps.
• Hanging too tight. A rigid, flat hammock is uncomfortable and increases stress on the anchor points. Aim for that 30-degree angle and a visible sag.
• Setting the height wrong. The lowest point should hover around 18 inches, not scrape the ground or sit so high that getting in becomes a gymnastic feat.
• Ignoring site rules. Some public lands prohibit hammocks entirely or require wide straps. REI specifically recommends checking with land managers first.

By sticking to these basics, you get a comfortable, safe setup that respects both the trees and the land. A little patience adjusting the straps pays off in an afternoon of easy swaying.