Weighted Blanket Size Calculator
Calculate weighted blanket size easily with our free tool. Get practical results, tips, and comparisons for everyday decisions.
Reviewed by Daniel Agrici, Founder & Lead Developer
Formula
Ideal Blanket Weight = Body Weight x 10%
The standard guideline is that a weighted blanket should weigh approximately 10% of the user body weight. The acceptable range is 8-12% of body weight. Adjustments are made for sleep position (side and stomach sleepers benefit from slightly lighter blankets) and user type (children should use strict 10%, elderly should use 8%). The blanket should be sized to the mattress top, not draping over edges.
Worked Examples
Example 1: Adult Individual Blanket
Problem:A 75kg adult who is 180cm tall sleeps on their side in a queen bed. What weighted blanket should they buy?
Solution:Ideal weight = 75kg x 10% = 7.5kg\nSide sleeper adjustment = -0.5kg\nAdjusted weight = 7.0kg (15.4 lbs)\nAcceptable range: 6.0kg - 9.0kg\nClosest standard: 6.8kg (15 lbs)\nBlanket size for queen: 152cm x 203cm (60 x 80 in)\nWeight density: 7.0 / (1.52 x 2.03) = 2.27 kg/sq m
Result:Buy a 15-lb (6.8kg) weighted blanket in queen size (60x80 inches). Glass micro-bead fill recommended.
Example 2: Child Weighted Blanket
Problem:A 30kg child who is 130cm tall sleeps on their back in a twin bed. What size and weight is appropriate?
Solution:Weight check: 30kg > 20kg minimum (safe to use)\nIdeal weight = 30kg x 10% = 3.0kg (6.6 lbs)\nBack sleeper: no adjustment needed\nClosest standard: 3.2kg (7 lbs)\nBlanket size for twin: 107cm x 152cm (42 x 60 in)\nChild must be able to remove blanket independently
Result:Buy a 7-lb (3.2kg) weighted blanket in twin size (42x60 inches). Ensure the child can remove it independently.
Frequently Asked Questions
How heavy should a weighted blanket be?
The standard recommendation is that a weighted blanket should weigh approximately 10 percent of your body weight. For a 150-pound person, that means a 15-pound blanket. For a 200-pound person, a 20-pound blanket. The acceptable range is 8 to 12 percent of body weight, allowing personal preference to guide the final choice. Some people prefer slightly lighter blankets at 8 percent for a gentle calming sensation, while others prefer the deeper pressure at 12 percent. First-time users should start with the 10 percent guideline and adjust from there. The weight should feel like a firm, comforting hug rather than a crushing burden. If the blanket feels too heavy to easily roll over or adjust position during sleep, it is too heavy.
What size weighted blanket should I buy?
Weighted blankets should be sized to cover the person, not the bed. Unlike regular comforters that drape over the mattress edges, weighted blankets should sit on top of the mattress surface only. If a weighted blanket drapes over the edges, the weight pulls it off the bed during sleep. For an individual sleeper, choose a blanket roughly the size of the mattress top or slightly smaller. Twin size blankets of 42 by 60 inches work for children and smaller adults. Full size at 48 by 72 inches suits most single adult sleepers. Queen size at 60 by 80 inches covers one person on a queen or king bed. Couples who both want weighted blankets should each have their own rather than sharing a single heavy blanket.
Are weighted blankets safe for children?
Weighted blankets can be safe and beneficial for children, but with important restrictions. Children should weigh at least 20 kilograms or about 44 pounds before using a weighted blanket. The blanket should be strictly 10 percent of the child body weight and never more. Children under 2 years old should never use weighted blankets due to suffocation risk. The child must be able to remove the blanket independently without assistance. Children with respiratory conditions, circulation problems, or certain developmental conditions should consult a pediatrician before use. Supervision during initial use is recommended. Many occupational therapists recommend weighted blankets for children with autism spectrum disorder, ADHD, and sensory processing difficulties, as the deep pressure stimulation can help with calming and sleep quality.
What are the benefits of weighted blankets?
Weighted blankets provide deep pressure stimulation, which activates the parasympathetic nervous system and triggers the release of serotonin and melatonin while reducing cortisol levels. Research has shown benefits for several conditions. A 2020 study in the Journal of Clinical Sleep Medicine found that weighted blankets significantly improved insomnia symptoms and reduced daytime sleepiness. They have been shown to reduce anxiety by up to 33 percent in clinical settings. Occupational therapists use them for sensory processing disorders, autism, and ADHD. The gentle, distributed pressure mimics the sensation of being held or hugged, activating the same calming neural pathways. Some users report reduced restless leg syndrome symptoms and improved overall sleep quality. The effects are similar to those achieved through massage therapy or deep pressure touch techniques.
References
Reviewed by Daniel Agrici, Founder & Lead Developer · Editorial policy