Size charts
Only charts with a published standard or a named source behind every row. No brand clothing charts, because every brand sizes differently.
All size charts
Ring size chart
US, UK, EU (ISO) and Japan sizes, inside diameter, actual size on screen, printable sizer.
Hat size chart
Head circumference to US fitted, UK, EU and S to XL sizes, plus head size by age.
Shoe size chart
Foot length to US men, US women, UK, EU and Mondopoint, from the ISO conversion.
Kids shoe size chart
Baby, toddler, little kid and big kid sizes by foot length.
Ear gauge size chart
Gauges to mm and inches, exact and as sold, at actual size.
Crochet hook and knitting needle sizes
mm to US letters and numbers, old UK and Japanese sizes.
Yarn weight chart
Lace to jumbo: needle and hook size, gauge, UK and Australian names.
Bike size chart
Road, mountain, hybrid and kids bike size by height.
Ski size chart
Ski length by height, kids skis, pole length and boot Mondopoint.
Snowboard size chart
Board length by height and weight, waist width by boot size.
Baseball bat size chart
Bat length by height, weight and age; glove size by age and position.
Ball sizes
Soccer, basketball, football, volleyball, tennis, golf and baseball ball sizes.
Diamond size chart
Carat to mm for round, square and oval stones, at actual size.
Bed size comparison
Twin to California king (US) and single to super king (UK) to scale.
Paper sizes
A0 to A10, B and C sizes, US Letter, Legal, Tabloid and photo prints.
TV size comparison
Screen width and height for every size, side by side, and viewing distance.
Blanket and bedding size chart
Blanket, comforter, duvet cover, sheet and pillow sizes for every bed.
Skateboard size chart
Deck width by shoe size and height, mini and full decks, wheel sizes.
Glove size chart
Hand circumference to glove size 6 to 11 (EN ISO 21420) and S to XXL.
Belt size chart
Belt size from pant size (plus 2 in), in inches, cm and S to XL.
Necklace length chart
Chain lengths from 14 to 36 in: names and where each one sits.
Bracelet size chart
Wrist size to bracelet size, by brand rule, in cm, inches and S to XL.
Battery size chart
AA, AAA, C, D, 9V and coin cells: size in mm, voltage, at actual size.
Light bulb size chart
Bulb bases (E26, E12, GU10...) and shapes (A19, BR30, PAR38...) in mm.
Wine bottle sizes
Piccolo to Melchizedek: volume, bottles and names, plus real bottle heights.
Pool table room size
Room size for 7, 8 and 9 ft tables by cue length, and table sizes.
Paddle board and surfboard size chart
SUP size by weight and use, surfboard volume by weight and level.
Clothing size conversion
US, UK, EU, Australia, France, Italy and Japan sizes, women and men.
Bead size chart
Bead sizes in mm at actual size, beads per inch and strand, seed beads.
How these charts are made
Each chart says where its numbers come from. Standards (ISO ring and shoe sizes, the Craft Yarn Council, sports rule books, ISO 216 paper) are rules. Gear sizing by height (bikes, skis, bats) comes from makers' and shops' published guides, which are labelled as guidelines.
Related: Nail size chart, Screw size chart, Pipe size chart.
Last checked: 5 October 2026