Hammock Hang Calculator
Estimate the anchor height and tension for a hammock setup.
Use the hang angle, anchor distance, seat height, and hammock measurements to size the setup.
Result
--
Run the calculation to see the hang estimate.
| Metric | Value |
|---|---|
| Suspension length per side | -- |
| Anchor height | -- |
| Tension per side | -- |
| Recommended ridgeline | -- |
Quick Answer
At a 30 degree hang angle, the tension rises quickly as the angle gets smaller, so a moderate sag is usually easier on the suspension.
How to Calculate
- Enter the anchor distance and desired seat height.
- Enter the hang angle and occupant weight.
- Optionally enter hammock and ridgeline lengths.
- Click Calculate.
Formula
Suspension length = half span / cos(angle)
Anchor height = seat height + half span x tan(angle)
Tension per side = weight force / (2 x sin(angle))
Worked Examples
Example 1: A 30 degree hang angle with a 175 lb occupant creates much higher tension than the weight alone suggests.
Example 2: A smaller angle increases suspension tension quickly.
Example 3: A ridgeline around 83 percent of hammock length is a common starting point.
How to Interpret Your Results
| Output | Meaning | Action |
|---|---|---|
| Anchor height | The approximate height where the suspension meets the tree or post. | Use it when placing straps or hardware. |
| Tension per side | The load carried by each side of the hammock suspension. | Check it against your gear rating. |
| Ridgeline | The recommended ridgeline length for the chosen hammock length. | Use it as a comfort and sag reference. |
Frequently Asked Questions
It creates a comfortable sag while keeping suspension tension manageable.
Yes. More occupant weight increases the load on the suspension.
It helps control the shape and sag of the hammock for comfort and repeatability.
Related Calculators
References
- OmniCalculator reference page
- A typical hammock hang angle is about 30 degrees from horizontal.
- Last reviewed: March 2026.