Weighted Blanket Calculator - Size & Weight Guide

A weighted blanket calculator is a quick way to find the right blanket weight for one person or for a couple sharing a single blanket. The calculator above turns your body weight into a recommendation in either pounds or kilograms using the 10 percent body weight rule, and it includes a couple mode that uses 7.5 percent of the combined body weight. It is built for adults shopping for sleep or sensory-friendly bedding.

• • First-time buyer choosing a sleep blanket: Pick the right weight on the first purchase instead of guessing between 12, 15, or 20 lb options.
• • Couple shopping for one shared blanket: Compare your and your partner's body weights, get the shared blanket weight, and see whether the difference warrants buying two blankets instead of one.
• • Caregiver matching a blanket to a child or older adult: Estimate a starting blanket weight for a sensory diet plan, anxiety routine, or overnight calming tool, with a built-in safety note for very small body weights.

Most weighted blanket shopping guides repeat the same 10 percent rule, but few tools check inputs in pounds and kilograms or warn when a couple's body weights differ enough to make a shared blanket uneven.

If you want to plan the sleep schedule around the blanket, Sleep Calculator helps you line up bedtime and wake time so the deep-pressure routine pays off overnight.

The calculation takes your body weight, converts to a single working unit, and applies the standard 10 percent plus 1.5 lb rule for one person, or 7.5 percent of the combined body weight for a couple. The result rounds to one decimal and snaps to the nearest standard retail size.

• bodyWeight: Your body weight in the selected unit. The single-mode formula uses this value directly.
• partnerWeight: Your partner's body weight, only used in couple mode and multiplied by 0.075 alongside your weight.
• weightUnit: Pounds (lb) or kilograms (kg). Inputs convert to kilograms using the NIST 0.45359237 kg/lb factor.
• extraOffset: A fixed 1.5 lb (0.68 kg) baseline added in single mode to keep the result grounded for light users.
• coupleFraction: A fixed 0.075 multiplier used in couple mode to spread deep pressure across two sleepers.

The 1.5 lb baseline offset (0.68 kg) is what keeps the recommendation grounded for users on the lighter end of the range. Without it, a 100 lb user would get a 10 lb blanket that some find too gentle; with it, the result lands at 11.5 lb which most users describe as comfortably calming.

Couple mode accounts for two sleepers sharing the same total pressure across a wider area, so multiplying the combined body weight by 0.075 keeps the per-person pressure comparable to single mode.

According to Omni Calculator, the standard weighted blanket weight is your body weight divided by 10 plus 1.5 lb and a couple's blanket should weigh 7.5 percent of their combined body weight

For shoppers who want to build a weighted blanket rather than buy one ready-made, Fabric Calculator covers the fabric yardage needed for a cover, lining, and weighted insert.

These four concepts cover the language used in the calculator, on retail product pages, and in occupational therapy guidance for deep-pressure bedding.

Standard retail sizes vary by brand, but 15, 20, and 25 lb are the three sizes most stocked in the U.S. market. Choosing the closest size is usually a better shopping decision than sizing up purely for extra pressure, because the extra weight can be too much for side sleepers.

Deep touch pressure works best when the rest of the sleep environment is also intentional, so Sleep Cycle Calculator is a useful companion for lining up sleep cycles with the blanket routine.

The calculator is designed to be usable in a single pass: pick a mode, type a body weight, choose a unit, and read the result. The four steps below walk through the most common shopping decision.

1. 1 Pick single or couple mode: Use single mode for one adult sleeper. Switch to couple mode if you and a partner plan to share one blanket.
2. 2 Enter your body weight: Type your body weight in the input field, then choose pounds (lb) or kilograms (kg) from the unit selector.
3. 3 Add your partner's weight if needed: In couple mode, enter your partner's body weight in the same unit. The calculator combines both weights and checks the percentage difference.
4. 4 Read the result and shop the closest size: The result panel shows the ideal blanket weight, percentage of body weight, the closest standard retail size, and a couple note when weights differ by more than 25 percent.

A 150 lb adult entering single mode in pounds gets a 16.5 lb recommendation, snaps to a 15 lb standard size, and shops for a 15 lb twin or queen weighted blanket. A 178 lb + 178 lb couple in couple mode gets 26.7 lb and snaps to a 25 lb king-size blanket with reinforced stitching.

Once you know the ideal weight, Quilt Calculator helps if you are planning a DIY weighted blanket and need to size the backing, batting, and binding for a custom cover.

The calculator is built to save time at the shopping step and to reduce the back-and-forth of guessing between retail sizes. Each benefit below is tied to a real decision you make when you buy a weighted blanket.

• • Removes guesswork between 12, 15, and 20 lb: The result panel tells you the exact recommendation and the closest standard size, so you do not have to choose between every size on a product page.
• • Works in pounds and kilograms: Switch the unit selector to see the recommendation in lb or kg, which is helpful when shopping on international sites or comparing brands that list the weight in different units.
• • Covers both single and couple shoppers: One tool handles both common shopping decisions, so you do not need a separate calculator or chart for shared blankets.
• • Warns about uneven couple weight distribution: The couple status line flags a body weight difference of more than 25 percent and recommends two separate blankets.
• • Gives a safety note for small body weights: When the entered body weight is very low, the calculator still produces a value but flags the result so caregivers can pair it with professional guidance.

Because the calculator works in real time, you can change a body weight, switch units, or move from single to couple mode and see the result update without reloading. That makes it useful for both first-time shoppers and repeat buyers comparing two body weights side by side.

If you want to fit the blanket use around a steady bedtime, Sleep Time Calculator helps you pick a bedtime that gives the deep-pressure routine enough hours to take effect.

Body weight is the main driver of the recommendation, but the result also depends on the unit, the couple combination rule, and standard retail sizing. These five cards cover the variables you should keep in mind before you check out.

• • The 10 percent rule is a starting point, not a clinical guideline. People with breathing, mobility, circulation, or temperature regulation concerns should talk to a clinician before picking a heavy blanket.
• • Weighted blankets are not appropriate for infants and toddlers. The U.S. Consumer Product Safety Commission flags suffocation and overheating risks for weighted bedding used by very young children.

Most shoppers settle on a size after one or two nights, so treat the first recommendation as a starting point. If the result feels too light, move up to the next standard size; if it feels too heavy, move down.

According to Sleep Foundation, sleepers tend to feel most comfortable beneath a weighted blanket of roughly 10 percent of their body weight, matching the 10 percent rule the calculator uses for single-mode recommendations.

According to U.S. Consumer Product Safety Commission, weighted blankets and weighted swaddles are not recommended for infant sleep because of suffocation and overheating risks, and caregivers should ask a clinician before using one for a young child.

If you want to time the blanket use around a steady sleep schedule, 90-Minute Sleep Cycle Calculator helps you plan restful cycles around the deep-pressure routine.