Bedroom & Bedding Calculators
Free, practical calculators for the numbers behind a good night’s sleep — mattress sizes, duvet tog ratings, sheet thread counts, bedding fit, bed-to-room clearance, and pillow loft and firmness. Educational tools for setting up your bedroom, not medical, health, or purchasing advice.
Mattress Size Guide
Look up the exact dimensions of every standard mattress — US Twin to California King and the UK single-to-super-king range, in inches and centimetres — and check which sizes fit your room
Duvet Tog Calculator
Turn the season and your bedroom's night temperature into a recommended tog rating, adjusted for whether you sleep hot or cold, so a duvet keeps you comfortable all year
Sheet Thread Count Guide
Enter a thread count and fabric and see the honest quality tier — where a higher number genuinely means a better sheet, where it is marketing, and which fabrics aren't measured this way
Bedding Size & Fit Calculator
Match your mattress size and depth to the fitted-sheet pocket and duvet-cover size you actually need, so new bedding fits the first time instead of pulling loose at the corners
Bed & Room Fit Planner
Enter your room dimensions and a bed frame's footprint and see the walking clearance on every side, plus a verdict on whether it fits comfortably, tightly, or crowds the room
Pillow Loft & Firmness Finder
Get a recommended pillow loft and firmness from your sleeping position and body frame, so your head and neck stay aligned instead of propped too high or sinking too flat