T-Shirt size calculator | calculate shirt size by height and weight

The Ultimate T-Shirt Size Calculator: Find Your Perfect Size

Finding the right t-shirt size is sometimes like finding a needle in a hay stack when you're shopping online - is it size Small, Medium or Large? If your measurements put you in between sizes, what does that mean? Our T-Shirt Size Calculator will help you find your ideal size (and even the fit) using your height, your weight, your body build, and fit preference.

So whether you want a slim fit, regular fit or oversized fit, the guide will identify the size shirt you should wear with confidence.


T-Shirt Size Calculator

 

Using the T-Shirt Size Calculator

Our shirt size calculator measures a number of variables to make the most accurate recommendation possible:

  • Gender/Age Group – Sizes vary between men, women and youth. Select the appropriate option.

  • Weight (kg or lbs) – Your weight is recorded in the unit you are using.

  • Height (feet/inches or cm) – You can use either imperial or metric units.

  • Body Build – The calculators are designed to account for build (i.e., select Slim, Average, or Athletic to take your muscle into consideration.)

  • Preferred Fit – Do you prefer a snug, normal or loose fit?


When you enter your data points for the foregoing, the size does calculator will produce for you:

  1. Recommended T-Shirt Size (XS-XXL or Youth Sizes)
  2. Size Chart Comparison (Chest & Waist Measurements)
  3. Fit Recommendations


Calculate Your Shirt Size Based on Height & Weight

Using the BMI and Body Type

For Adults (Men & Women)

Our t-shirt size cm calculator uses the BMI (Body Mass Index) scale, plus your body type, to find the best fit:


  • BMI < 18.5 → Probably XS or S (Slim body type)

  • BMI 18.5-24.9 → Probably S or M (Average body type)

  • BMI 25-29.9 → Probably L or XL (Athletic or broader body type)

  • BMI 30+ → Probably XL or XXL (Loose fitting is appropriate)


T-Shirt Size Guidelines & Fit Tips

1. Slim Fit vs. Regular vs. Loose Fit

  • Tight/Slim Fit → Snug/runs to body shape (size down if in-between sizes).

  • Regular Fit → Standard cut (true to size).

  • Loose Fit → Relaxed/runs big (size up if in-between sizes).


2. How body build affects sizing

  • Slim Build → may need to go to a smaller size for a fitted look.

  • Average Build → Normally go with standard sizing.

  • Athletic Build (Broad shoulders/chest) → you may need a bigger size for comfort.


Conclusion Notes: What size T-shirt should I purchase?

Our T-shirt size calculator helps remove doubt of size by using height, weight, and body type to find your best fit. You need this guide regardless of casual wear shirts, gym shirts, or fashion t-shirts, it will assist you in choosing the right t-shirt size every time.