Weighted Blanket Weight Calculator
Recommended weighted-blanket weight from body weight (lb or kg) using the 10 percent rule, with sleeper-preference and child-vs-adult adjustments. Output in both imperial and metric.
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Find your weighted-blanket weight
Enter body weight in lb or kg. Pick sleeper type and preference. The calculator returns the recommended blanket weight in both unit systems.
15 lb (7 kg)
Adult, standard preference, 150 lb (68 kg) body weight at 10 percent of body weight.
How to use this calculator
Enter body weight and pick a unit (lb or kg). Pick sleeper type (adult, teen, or child between 2 and 12). Set sleeper preference (lighter, standard, or heavier) and any sensory considerations (sensory-seeking or restless sleeper). The calculator applies the 10 percent rule with adjustments and shows the result in both imperial and metric. The buying-range output covers the typical 1 to 2 lb (0.5 to 1 kg) tolerance built into commercial blanket sizes.
Tips for success
- Start with the 10 percent recommendation. Use the blanket for 1 to 2 weeks before deciding to size up or down. Most people land within 1 to 2 lb (0.5 to 1 kg) of the calculator output.
- Cooling fill matters in summer. Glass-bead fill runs more thermally neutral than plastic-pellet fill; cotton or bamboo cover beats poly. Expect 30 to 50 percent more for cooling-specific blankets.
- Two blankets, not one couples blanket. Sized correctly per person beats a compromise that fits neither sleeper.
- Wash at the recommended frequency. Most weighted blankets need a duvet cover (washable) and gentle wash for the inner only every 1 to 3 months. Heavy weighted blankets (15+ lb / 7+ kg) often need commercial-machine washing.
- Sensory-seeking sleepers can go heavier. Up to 12 to 15 percent of body weight gives more deep-pressure feedback. Diminishing returns above 12 percent; the chest pressure becomes uncomfortable.
Common mistakes
- Using a weighted blanket on infants or toddlers under 2. Suffocation risk is real. Pediatric weighted blankets are explicitly age-rated for children 2+ who can move the blanket off themselves.
- Going too heavy. 15 percent of body weight is the upper limit for almost everyone; above that, chest pressure restricts breathing and disrupts sleep more than it helps.
- Buying a couples blanket sized for the heavier person. The lighter sleeper feels crushed. Two individual blankets work better.
- Skipping the duvet cover. Inner blanket fill (glass beads or plastic pellets) is much harder to wash than a removable cover. Always use a washable cover.
- Treating it as a medical device. Weighted blankets help with insomnia and anxiety in modest amounts but do not replace medical care. Talk to a doctor if persistent sleep or anxiety issues drive the purchase.
- Wrong size dimensions. A 15 lb (7 kg) twin-sized blanket distributes pressure differently than a 15 lb queen-sized one. Match the bed size for even weight distribution.
FAQ
What is the 10% rule for weighted blankets?
The standard recommendation is a weighted blanket equal to about 10 percent of your body weight, with a 1 to 2 lb (0.5 to 1 kg) tolerance up or down for personal preference. A 150 lb (68 kg) adult lands at 15 lb (7 kg); a 200 lb (91 kg) adult lands at 20 lb (9 kg). The rule is a starting point, not a strict prescription. Try the recommended weight, then adjust by 1 to 2 lb either direction after a week of use.
Are weighted blankets safe for kids?
For children over 2 years old who can safely move the blanket off themselves, yes, with caveats. Use the 10% rule but cap the blanket weight at the child’s body weight + 1 lb (0.5 kg), never more. Pediatric weighted blankets typically cap at 7 lb (3 kg) for children up to about 70 lb (32 kg). Never use weighted blankets for infants, toddlers under 2, or children with respiratory issues. Always supervise initial use.
Why does sleeper preference matter?
Some people sleep best with a heavier-than-standard blanket (12 to 15 percent of body weight) because they want maximum deep-pressure stimulation. Others find 10 percent too warm or too restrictive and prefer 7 to 8 percent. Sensory-seeking individuals (autism spectrum, ADHD, anxiety) often benefit from the higher end; restless sleepers and people with claustrophobia tend toward the lower end. The calculator factors preference into the recommendation.
Should I get a heavier blanket if I have anxiety or insomnia?
Research on weighted blankets for generalized anxiety disorder, ADHD, and primary insomnia suggests modest benefit at the standard 10 percent of body weight, with diminishing returns above 12 percent. The deep-pressure stimulation effect plateaus; going heavier doesn’t equal better. Start at 10 percent, evaluate after 1 to 2 weeks, then move to 12 percent if you want more pressure.
What if I share the bed?
Weighted blankets are individual; the recommendation is per-person. If you and a partner share a bed, each pick a blanket sized for your own body weight. A blanket sized for the heavier person will feel uncomfortably heavy on the lighter sleeper. Two blankets work fine on the same bed; couples-sized weighted blankets exist but tend to compromise both sleepers.
Are weighted blankets safe in summer?
They retain heat by design. Cooling weighted blankets use breathable fabrics (bamboo viscose, Tencel, Coolmax) or glass-bead fill (more thermally neutral than plastic-pellet fill) to reduce overheating. In hot climates or for hot sleepers, look for these specifically; expect to pay 30 to 50 percent more than a standard cotton/poly weighted blanket.