Torso length is one of the most important measurements for fitting a larger hiking or travel backpack. Height alone does not predict torso length accurately, which is why two people of the same height may need different pack sizes.

Quick Answer: Find the C7 vertebra at the base of your neck, then find the top of your iliac crest at the hips. Measure along the curve of your spine between those two points. Compare that measurement with the backpack manufacturer's current torso-size chart.

Browse Hiking Backpacks or read How Should a Hiking Backpack Fit?.

Find C7

Tilt your head forward. The prominent vertebra at the base of the neck is commonly used as the upper torso reference point.

Find the Iliac Crest

Place your hands on the top edges of your hip bones. Imagine a line across your lower back connecting those points.

Measure Along the Spine

Use a flexible tape from C7 down to the line across the iliac crest. A second person makes the measurement easier.

Compare With the Brand Chart

Backpack size ranges vary by manufacturer. A medium in one brand may not match a medium in another.

Adjustable Torso Backpacks

Adjustable harness systems cover a range of torso lengths and can be useful when you fall between fixed sizes.

Frequently Asked Questions

Is torso length the same as height?

No. People with the same height can have different leg and torso proportions.

Can I measure torso length alone?

You can, but another person usually provides a more accurate measurement.

Does torso length matter for school backpacks?

Body fit still matters, but precise torso sizing is most important for load-bearing hiking packs.

Final Verdict

Measure from C7 to the iliac crest and use that number with the specific manufacturer's sizing chart. Correct torso length is the foundation of a well-fitted hiking backpack.

Continue with our hiking backpack fit guide.