How Much Should My Weighted Blanket Weigh? | The 10% Rule

For most adults, a weighted blanket should weigh about 10% of body weight, though a range of 5% to 12% works for many.

Figuring out the right weight is the difference between a restful night and a blanket that feels either useless or suffocating. The common advice—aim for roughly 10% of your body weight—is a solid starting point for most adults, but the truth is a bit more flexible. Whether you’re a restless sleeper or buying for a child, here’s how to find the sweet spot.

The 10% Rule For Weighted Blankets

Most sleep experts and manufacturers point to the same starting formula: a weighted blanket at about 10% of your body weight. If you weigh 150 pounds, you’d look for a 15-pound blanket; at 180 pounds, you’d target an 18-pound option. This weight provides enough gentle, even pressure to trigger the calming effect most people buy these blankets for, without feeling like you’re pinned down.

The Sleep Foundation notes that recommendations vary between 5% and 12% of body weight, with most people preferring right around 10%. Here’s a quick frame of reference:

• If you weigh 100–120 lbs: a 10–12 lb blanket suits most.
• If you weigh 130–160 lbs: a 12–15 lb blanket is typical.
• If you weigh 170–200 lbs: a 15–20 lb blanket fits well.
• If you weigh 200+ lbs: a 20–25 lb blanket is the usual range.

Remember, those are starting points—your comfort, sleep position, and sensitivity all shift where you land.

A Weighted Blanket Weight Chart

If you land near the top of that adult range, a solid 20 lb weighted blanket option is worth reviewing—it’s the most common weight for adults in the 180–220 pound range.

Safety Guidance For Children And Higher-Risk Users

Weighted blankets aren’t for everyone. Safety guidance consistently says these blankets can be unsafe for infants and very young children, and should be used with caution by anyone with heart or lung problems. The firm rule across sources: never use a weighted blanket on a child under 2 years old.

For children, keep the weight conservative. The Oxford Health NHS briefing cites a maximum of 10% of the child’s weight, drawn from the Ordre des Ergothérapeutes du Québec, and emphasizes that there’s no evidence specifying an exact required weight. Their guidance is straightforward: use the lightest blanket that achieves the intended outcome. The same logic applies to anyone with breathing conditions, circulation issues, or limited mobility—start lighter, and get clinical advice if there’s any doubt.

Why 10% Might Not Be The Right Number For You

Ten percent is a starting point, not a law. A few real-world factors can push the ideal weight in either direction:

• Sleep position. Back sleepers often prefer a lighter blanket; side sleepers frequently size up a few pounds because the extra weight helps the blanket drape over the shoulder.
• Temperature sensitivity. Heavier blankets trap more heat. If you sleep hot, aim for the lower end of your range.
• Mobility. If you turn frequently at night, a blanket on the heavier side can feel restrictive. Lighter is easier to shift.
• Sharing the blanket. If you’re splitting a weighted blanket with a partner, total body weight matters—but most couples find one blanket rarely works for both. Individual blankets are far more practical.

When you’re deciding between two weights, err toward the lighter option first. You can always add a regular throw on top if it doesn’t feel like enough. A blanket that’s too heavy is harder to sleep under than one that’s slightly light.