Official

Official

Comprehensive size conversion and international sizing resource

Official Size Guide - Clothing & Footwear Sizing

Official Size Guide

Official is a contemporary casualwear and sportswear brand specialising in high-quality clothing and footwear for men, women, and children. Known for its inclusive sizing range and accessible style, Official caters to those seeking versatile everyday essentials, from basic tees and comfortable jeans to performance-oriented jackets and trainers. The brand's sizing philosophy prioritises comfort and fit across diverse body types, offering extended size ranges that ensure customers can find their perfect fit whether shopping for casual basics or more specialised sportswear. Official products are designed for modern, active lifestyles and reflect current fashion trends whilst maintaining practical durability.

How to Measure

To ensure the perfect fit, follow these simple measurement steps using a soft measuring tape. Wear minimal, fitted clothing and measure against bare skin where possible.

  1. Chest Measurement: Measure around the fullest part of your chest, keeping the tape parallel to the ground. Ensure the tape is snug but not tight, and take the measurement at a natural breathing point.
  2. Waist Measurement: Find your natural waistline (typically just above the hip bone) and measure horizontally around this area. The tape should be comfortable and not pulled tight.
  3. Hip Measurement: Stand with feet together and measure around the fullest part of your hips and bottom, keeping the tape level and parallel to the ground.
  4. Sleeve Length (for tops): Start at the centre back of your neck, measure across your shoulder to the edge, then down your arm to your wrist bone. Alternatively, measure from your shoulder seam to your wrist when wearing a well-fitting top.
  5. Inside Leg Length (for trousers): Measure from the top of your inner thigh to your ankle bone, or try on a pair of well-fitting trousers and measure the inside seam from crotch to hem.
  6. Foot Length (for footwear): Place your foot on a flat surface and measure from the heel to the tip of your longest toe. Measure both feet, as one may be slightly larger, and use the larger measurement when selecting shoe sizes.
  7. Record Your Measurements: Write down all measurements in both centimetres and inches, then compare these figures to the Official size charts below to identify your ideal size.

Women's Clothing Size Chart

Official women's clothing is available in sizes from XS through to XXL, with detailed measurements provided to help you select the right fit. All measurements are in inches and centimetres.

Size Label UK US EU Chest (in) Chest (cm) Waist (in) Waist (cm) Hips (in) Hips (cm)
XS 4 0 32 31–32 79–81 24–25 61–64 33–34 84–86
S 6 2 34 32–33 81–84 25–26 64–66 34–35 86–89
M 8 4 36 33–34 84–86 26–27 66–69 35–37 89–94
L 10 6 38 35–36 89–91 27–28 69–71 37–38 94–97
XL 12 8 40 37–38 94–97 29–30 74–76 39–40 99–102
XXL 14 10 42 39–40 99–102 31–32 79–81 41–42 104–107
XXXL 16 12 44 41–42 104–107 33–34 84–86 43–44 109–112
4XL 18 14 46 43–44 109–112 35–36 89–91 45–47 114–119
5XL 20 16 48 45–46 114–117 38–39 97–99 47–48 119–122

Men's Clothing Size Chart

Official men's clothing is designed with a contemporary fit, available in sizes from XS through to XXL. Measurements below reflect chest, waist, and inseam dimensions in inches and centimetres.

Size Label UK US EU Chest (in) Chest (cm) Waist (in) Waist (cm) Inseam (in) Inseam (cm)
XS 32–34 XS 44 34–36 86–91 28–30 71–76 30–31 76–79
S 36–38 S 46 36–38 91–96 30–32 76–81 31–32 79–81
M 38–40 M 48 38–40 96–101 32–34 81–86 32–33 81–84
L 40–42 L 50 40–42 101–107 34–36 86–91 33–34 84–86
XL 42–44 XL 52 42–44 107–112 36–38 91–97 34–35 86–89
XXL 44–46 XXL 54 44–46 112–117 38–40 97–102 35–36 89–91
XXXL 46–48 XXXL 56 46–48 117–122 40–42 102–107 36–37 91–94

Children's Clothing Size Chart

Official children's clothing is sized by age range and chest measurement, making it simple to find the right fit for growing children. Sizes are provided in centimetres and inches.

Age UK Size US Size EU Size Height (cm) Height (in) Chest (cm) Chest (in)
12 months 12 months 12M 80 71–76 28–30 50–52 20–21
18 months 18 months 18M 86 76–81 30–32 52–54 21–22
24 months 24 months 24M 92 81–86 32–34 54–56 22–23
2–3 years 2–3 2T 92–98 86–98 34–39 56–58 23–24
3–4 years 3–4 4T 98–104 98–110 39–43 58–60 24–25
4–5 years 4–5 5 104–110 110–116 43–46 60–62 25–26
5–6 years 5–6 6 110–116 116–122 46–48 62–64 26–27
6–7 years 6–7 6X–7 116–122 122–128 48–50 64–66 27–28
7–8 years 7–8 7–8 122–128 128–134 50–53 66–68 28–29
8–9 years 8–9 9–10 128–134 134–140 53–55 68–70 29–30
9–10 years 9–10 10 134–140 140–146 55–57 70–73 30–31
10–11 years 10–11 11 140–146 146–152 57–60 73–76 31–32
11–12 years 11–12 14 146–152 152–158 60–63 76–79 32–33

Footwear Size Chart

Official footwear is available in a comprehensive range of sizes for men, women, and children. Use the chart below to convert between UK, US, and EU shoe sizes, with measurements provided in centimetres.

UK US Men's US Women's EU Foot Length (cm)
3 — 5 36 22.5
3.5 — 5.5 36.5 22.9
4 — 6 37 23.5
4.5 — 6.5 37.5 24
5 — 7 38 24.5
5.5 — 7.5 38.5 24.8
6 — 8 39 25.1
6.5 — 8.5 39.5 25.4
7 — 9 40 25.7
7 6 — 40 25.7
7.5 6.5 9.5 40.5 26
8 7 9 41 26.3
8.5 7.5 9.5 41.5 26.7
9 8 10 42 27
9.5 8.5 10.5 42.5 27.3
10 9 11 43 27.6
10.5 9.5 11.5 43.5 27.9
11 10 12 44 28.3
11.5 10.5 12.5 44.5 28.6
12 11 13 45 29
12.5 11.5 13.5 45.5 29.4
13 12 14 46 29.8

Kids' Footwear Size Chart

Official children's shoes are carefully sized to accommodate growing feet. The chart below provides conversions for UK, US, and EU children's shoe sizes with corresponding foot lengths in centimetres.

Age Guide UK US EU Foot Length (cm)
Infant (0–6 months) 2 2 18 10.1
Infant (3–9 months) 3 4 19 10.9
Infant (6–12 months) 4 5 20 11.7
12–18 months 5 6 22 12.6
18–24 months 6 7 23 13.4
2 years 7 8 24 14.2
2–3 years 8 9 25 15.1
3 years 9 10 27 15.9
3–4 years 10 11 28 16.8
4–5 years 11 12 29 17.5
5–6 years 12 13 31 18.5
6–7 years 13 1 32 19.3
7–8 years 1 2 33 20.2
8–9 years 2 3 34 21
9–10 years 3 4 36 21.9
10–11 years 4 5

Sizing Information

General Fit

Official sizing tends to follow standard UK sizing. However, we recommend checking the specific size chart for each item.

Fit Recommendations

  • Check product-specific size charts when available
  • Read customer reviews for fit feedback
  • Consider the item type (slim fit, regular fit, etc.)
  • When in doubt, contact customer service

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Important: This page provides essential and expertly curated size conversion information that should be used in conjunction with the complete interactive tools available at sizechart.uk. For the most accurate size conversions and access to our comprehensive database of brand-specific charts, measurement guides, and real-time conversion tools, please visit the full website. The information presented here represents only a portion of our complete sizing resources and should be evaluated within the context of your specific sizing needs and the brands you're shopping for. It is impossible to determine the anatomical size of a shoe or clothing item without the use of a measuring tape or ruler in conjunction with the size chart.