Calculators
Sleep Setup Calculators
Every calculator shows its formula and labels each figure as an industry standard or a convention. Where a manufacturer does not publish a number, these return no answer rather than a guess.
16 calculators
Sizing and fit
- Mattress Size Calculator The size that fits your sleepers, their height and the room, with the standard dimensions for each.
- Room Size and Clearance Calculator Whether a bed fits your room, and how much walking clearance is left on each side.
- Split Size Decision Calculator Whether a split king or split California king is worth it for your setup.
- Mattress Weight and Moving Clearance Calculator Whether a mattress turns your hallway corner, and what it takes to carry it.
Height and base
- Total Bed Height Calculator Frame plus foundation plus mattress, against the height most adults sit down on comfortably.
- Bed Frame Weight Capacity Calculator Sleepers plus mattress against the capacities published for each frame type.
- Adjustable Base Compatibility Calculator Whether an adjustable base fits inside your frame, and whether your mattress can bend.
Bedding
- Sheet Pocket Depth Calculator The fitted sheet depth your mattress needs once the topper and protector are counted.
- Duvet and Comforter Size Calculator How much drop you get on each side, and when to size up a comforter.
- Bedding Cost Per Year Calculator What sheets, protectors and pillows cost per year once replacement intervals are counted.
Comfort
- Mattress Topper Thickness Calculator The topper thickness that makes the change you want, and what it does to sheet fit.
- Pillow Loft Calculator Pillow height by sleeping position, adjusted for shoulder width when you measure it.
- Mattress Firmness Calculator A firmness range by position and body weight, on a scale each maker sets for itself.
Cost and timing
- Mattress Break-In Period Calculator How long a compressed mattress needs to expand, and how long to judge the feel.
- Mattress Replacement Timing Calculator Where your mattress sits in the typical service life for its construction.
- Cost Per Night Calculator What a mattress costs per night across the years you will actually sleep on it.