How to choose paracord
Updated June 2026Independently researchedNo paid placement.
For most tasks, standard 550 paracord (type III) made from 100% nylon with a minimum of 7 inner strands offers the best balance of strength, durability, and flexibility. Avoid cheap polyester or polypropylene blends for critical uses. Start with a 100-foot spool of mil-spec 550 cord to cover 90% of your projects.
What is paracord and why does it matter?
Paracord, short for parachute cord, is a lightweight nylon kernmantle rope originally used in suspension lines of parachutes. The outer sheath protects an inner core of twisted strands, giving it a high strength-to-weight ratio. Modern paracord is a go-to for camping, survival kits, crafts, and everyday carry because it’s strong, versatile, and easy to work with. Understanding the different types and materials helps you choose cord that won’t let you down when you need it most. A poor choice can mean fraying, snapping under load, or rotting after a few months outdoors.
550 paracord vs 650 vs 275: which one should you buy?
Type III, commonly called 550 paracord, is the standard for most uses. It’s rated for about 550 pounds of tensile strength and has a 4-millimeter diameter with 7 to 9 inner strands. It works well for shelter building, lashing gear, bracelets, and general utility. Type IV (650 cord) is thicker and stronger, rated around 650 pounds, with more inner strands. It’s better for heavy-duty tasks like towing or bear bags. Type II (275 cord) is thinner and lighter, good for lightweight repairs or fishing line but not load-bearing. For almost everyone, start with 550 cord and only go thicker or thinner if you have a specific need.
Nylon vs polypropylene: which material is better?
Nylon is the traditional and superior choice for paracord. It has excellent abrasion resistance, stretches slightly under load (which absorbs shock), and resists mold and mildew. Military-spec paracord is always nylon. Polypropylene is cheaper, floats on water, and doesn’t absorb moisture, but it’s weaker, degrades faster in sunlight, and has poor durability. If you’re using paracord for anything that matters, survival, securing gear, or even a dog leash, choose 100% nylon. Polypropylene blends are fine for low-stress projects like garden ties or decorative macrame, but don’t trust them for load-bearing tasks.
How many inner strands do you really need?
The inner strands (also called cores or yarns) greatly affect the cord’s strength and utility. Standard 550 paracord typically has 7 to 9 inner strands. More strands generally mean higher strength and more material for emergency use, since you can pull out the cores to use as sewing thread or fishing line. However, some manufacturers skimp on core count to cut costs. For critical applications, look for cord labeled “mil-spec” or “type III” with at least 7 inner strands. If you plan to gut the cord for crafting or fine work, 9-strand cord gives you more to work with. Avoid cord with fewer than 4 strands; it’s likely decorative and not trustworthy under load.
What about UV resistance and shelf life?
Nylon paracord naturally degrades when exposed to prolonged direct sunlight, losing about 20–30% of its strength over a year of constant sun. Quality paracord has UV inhibitors in the dye, but no cord is fully UV-proof. For outdoor gear that lives in the sun (like hammock lines or tent guylines), expect to replace it every season. Storage matters too. Keep your paracord in a cool, dark, dry place. Avoid contact with gasoline, solvents, or battery acid. Under normal indoor storage, nylon paracord lasts many years without significant strength loss.
How much paracord should you buy for common projects?
For a survival bracelet or keychain fob, you’ll need 8 to 12 feet. A basic dog leash takes 15 to 20 feet. Hanging a bear bag or building a ridgeline might use 30 to 50 feet. For most people, a single 100-foot spool is a solid starter size. If you’re making multiple lanyards or bracelets, a 250-foot spool is more economical. Buying in bulk (500 or 1,000 feet) is fine if you know you’ll use it, but test the brand’s quality on a short length first. Some cheap bulk cord has uneven weave, brittle inner strands, or false strength ratings.
Frequently asked questions
What is 550 paracord?
550 paracord, or type III, is a nylon cord originally rated for 550 pounds of tensile strength. It has a 4 mm diameter and typically contains 7 to 9 inner strands. It’s the most versatile and widely used paracord for survival, camping, and everyday carry.
Can paracord hold a person’s weight?
A single strand of quality 550 paracord is not rated for climbing or life support, even though its breaking strength exceeds 550 pounds. Knots, wear, and dynamic loads can reduce strength by 30–50%. Never rely on paracord alone for climbing or rescue harnesses.
Is paracord waterproof?
Nylon paracord absorbs water and can gain weight, but it does not lose much strength when wet. Polypropylene cord floats and does not absorb water. Neither is truly waterproof; nylon wicks moisture through the weave. For submerged use, you’ll want to dry it afterward to prevent mildew.
What’s the difference between type III and type IV paracord?
Type III (550 cord) is 4 mm in diameter and rated around 550 pounds. Type IV (650 cord) is about 5 mm thick and rated around 650 pounds, with more inner strands (typically 9 or more). Type IV is stiffer and better for heavy lashing or towing, but less flexible for knotting.
How can I tell if my paracord is real mil-spec?
Real mil-spec paracord has a tight, even weave, a minimum of 7 inner strands, and a nylon construction that feels smooth but not slippery. The outer sheath should not slide easily off the core. A common test: cut a 6-inch length and try to separate the inner strands, they should be twisted, not straight fibers. Also compare weight; cheap cord feels noticeably lighter than a proper 550 cord.
Can I use paracord for a dog leash?
Yes, but only with a proper knot like a figure-eight or a fisherman’s bend, and never trust a cheap friction knot. A 6-foot leash made from 550 cord can hold most dogs, but check the leash regularly for fraying. For large, strong pullers, consider 650 cord or a reinforced weave like a cobra stitch.