What Weighted Blanket Should You Get? The Complete Guide

Choosing a weighted blanket should feel simple. You find a size you like, pick a weight, and check out. But most people stall at the weight step — and for a good reason. Too light, and you might not feel the therapeutic benefit. Too heavy, and it can feel restrictive, uncomfortable, or too warm to sleep under.

The good news is there is a clear starting point backed by decades of occupational therapy practice: the 10 percent body weight rule. Once you understand it — and the situations where you might want to adjust slightly up or down — the decision becomes straightforward.

This guide covers everything you need to know to choose the right weight, whether you are buying for yourself, a child, or an elderly family member.

The 10 Percent Body Weight Rule — Where It Comes From

The most widely cited guideline for weighted blanket sizing is that your blanket should weigh approximately 10 percent of your body weight. This is not a marketing claim invented to justify a product range — it originates from occupational therapy, where practitioners observed that Deep Touch Pressure Therapy (firm, evenly distributed pressure applied across the body) was most effective when the weight was proportional to the user's size.

The physiological explanation is straightforward. Deep Touch Pressure Therapy works by stimulating the parasympathetic nervous system — the body's rest-and-digest mode, as opposed to the fight-or-flight state many of us are stuck in during the evening. When pressure is too light, the nervous system does not register it strongly enough to shift out of alertness. When pressure is too heavy, it can trigger discomfort. At roughly 10 percent of body weight, most adults find the input feels grounding and appropriately firm without being overwhelming.

It is worth emphasizing that 10 percent is a starting point, not an absolute rule. Individual preference, sleep position, body composition, and prior experience with weighted products all play a role. Most experienced weighted blanket users settle on a weight within 1–2 kilograms of the formula result.

Weighted Blanket Weight Guide by Body Weight

If your weight sits between two blanket options and you are genuinely unsure, most adults find that going with the slightly heavier option gives a more noticeably therapeutic result — particularly for anxiety and sleep onset.

When to Choose a Lighter Weight Than 10 Percent

The 10 percent guideline is exactly that — a guideline. There are several situations where starting lighter is the smarter choice.

First-time users who are unsure about confined-feeling sleep environments may find a lighter blanket easier to adjust to. Starting lighter lets you experience Deep Touch Pressure Therapy without the adjustment period feeling difficult.

Hot sleepers are another clear case. More weight means slightly more fill material, which means slightly more insulation. If you run warm at night or live somewhere with a humid summer climate, a blanket 1–2 kg below the standard formula can feel more comfortable while still providing meaningful therapeutic pressure. The cover material you choose matters enormously here — see our guide on weighted blanket fabrics for more on this.

Elderly users often prefer lighter options — typically no more than 5–6 kg — not because of therapeutic preference but for practical ease of use. Getting in and out from under a 9 kg blanket multiple times during the night can be physically demanding for those with reduced mobility or lower muscle strength.

When to Choose a Heavier Weight Than 10 Percent

Some people find that standard-guideline weights feel underwhelming — particularly those with higher sensory thresholds or who have used weighted products before. If you find firm pressure inherently calming (think deep tissue massage, firm hugs, or compression clothing), you may prefer a blanket 1–2 kg heavier than the formula suggests.

Those using a weighted blanket primarily for anxiety management sometimes find stronger pressure more effective at reducing physical anxiety symptoms — racing heart, shallow breathing, restlessness. If this is your primary goal, starting at the upper end of your recommended range is a reasonable approach.

One important safety note: most manufacturers and occupational therapists recommend not exceeding 15 percent of your body weight. Beyond this threshold, the weight can begin to restrict breathing during sleep or create discomfort that outweighs the therapeutic benefit.

Choosing the Right Weight for Children

Weighted blankets are widely used by children with sensory processing differences, autism spectrum disorder, and anxiety — but choosing the right weight for a child requires more care than for an adult.

The standard guideline for children is 10 percent of body weight plus approximately 500 grams. However, for children with specific sensory or developmental needs, working with an occupational therapist to determine the right weight and usage pattern is strongly recommended before purchasing.

Never use a weighted blanket with infants or toddlers under 2 years of age. For children aged 2–5, a 2–3 kg blanket is typically appropriate for a child weighing 15–25 kg. For school-age children, 3–5 kg is the common range depending on size and sensory preference.

Crucially, always ensure children can remove the blanket independently. A weighted blanket should never restrict a child's ability to move freely or to change position during sleep. If a child cannot lift the blanket off themselves, it is too heavy.

Choosing for Seniors

For older adults, the practical considerations around weight often matter as much as the therapeutic formula. A blanket that is therapeutically optimal but difficult to manage independently will not get regular use.

Most occupational therapists working with elderly clients recommend capping blanket weight at 5–6 kg regardless of body weight, unless the individual has good upper body strength and mobility. Lap blankets — smaller, lighter weighted options used during the day while seated — are increasingly popular among elderly users as a comfortable, manageable alternative to a full-size blanket for overnight use.

If purchasing for an elderly parent or relative with a specific condition (dementia, Parkinson's, limited mobility), a conversation with their treating clinician before purchasing is always worthwhile.

How to Find Your Groundd Weight

Groundd weighted blankets are available in multiple weights to suit most adult body weights and preferences. If you are still unsure which to choose, the Groundd product finder quiz at groundd.nz takes you through a short set of questions — including body weight, typical sleep temperature, and whether you have used a weighted blanket before — and recommends the right option for you in under two minutes.

All Groundd blankets use fine glass beads as fill material. Glass beads distribute weight more evenly than plastic pellets and stay within their sewn pockets rather than migrating and creating uneven pressure spots. The cover is made from OEKO-TEX certified bamboo lyocell, which is naturally thermoregulating — meaning the weight of the blanket does not translate into excessive warmth the way polyester options tend to.

Frequently Asked Questions

Q: Can two people share a weighted blanket?

A: Weighted blankets work best when sized to the individual. Sharing typically means one person gets too little pressure and the other too much. For couples, two individual blankets — each sized to the respective person's body weight — deliver a significantly better result than a single shared option.

Q: What if my weight changes significantly?

A: Within a range of 5–10 kg, your existing blanket will still provide meaningful benefit. If your weight changes substantially, reassess using the 10 percent formula. A blanket that is 1–2 kg outside the ideal range is not wasted — many people own two weights for different seasons or moods.

Q: Is there a maximum safe weight for a weighted blanket?

A: Most manufacturers and occupational therapists recommend staying at or below 15 percent of body weight. Above this threshold, the blanket may restrict chest movement during sleep or cause discomfort that disrupts rather than aids rest.

Q: Can I use a weighted blanket during pregnancy?

A: Consult your midwife or doctor before using a weighted blanket during pregnancy, particularly in the second and third trimesters. Weight distribution and comfortable sleeping positions change significantly during pregnancy, and what is safe and comfortable varies by individual.