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Buying a T-shirt online but unsure which size to choose? One of the most common questions is: “What size L fits for my weight?” The simple answer is that size L usually fits people around 65–75 kg, but weight alone is not enough to choose the right size.
Your height, chest width, body shape, fabric type, and preferred fit all matter. A size L in Gildan may feel different from a size L in American Apparel or Comfort Colors. This guide helps you choose the right T-shirt size based on body weight, height, fit preference, and brand.
T-Shirt Size by Body Weight: General Guide
Use this table as a starting point for unisex T-shirts. For a more accurate fit, compare your body measurements with the product’s actual size chart.
| Size | Body Weight | Approx. Height | Fit Notes |
|---|---|---|---|
| S | 45–55 kg | 155–163 cm | Slim or close fit |
| M | 55–65 kg | 160–168 cm | Regular everyday fit |
| L | 65–75 kg | 165–173 cm | True-to-size or slightly relaxed |
| XL | 75–85 kg | 170–178 cm | Comfortable and roomy |
| 2XL | 85–95 kg | 175–185 cm | Relaxed or oversized feel |
Quick answer: If your body weight is around 65–75 kg, size L is usually the safest starting point. If you prefer an oversized fit, consider XL.
Why Weight Alone Is Not Enough
Two people can have the same body weight but need different T-shirt sizes. For example, someone who is 170 cm and 70 kg may fit size L, while someone who is 180 cm and 70 kg may prefer XL for better length.
Before choosing a size, consider:
- Height: Taller people may need a longer body length.
- Chest width: This affects how tight or relaxed the T-shirt feels.
- Shoulder width: Important for regular and fitted styles.
- Fit preference: Regular, relaxed, boxy, or oversized.
- Fabric type: Some cotton T-shirts may shrink after washing.
If you are unsure how to read measurements, see our guide on how to read a T-shirt size chart.
Regular Fit vs Oversized Fit
A regular-fit T-shirt follows your body shape without feeling too tight. An oversized T-shirt gives more room around the chest, shoulders, sleeves, and body length.
| Fit Type | Best For | Size Advice |
|---|---|---|
| Regular Fit | Daily wear, clean casual looks | Choose your normal size |
| Relaxed Fit | Comfortable everyday outfits | Choose normal size or size up |
| Oversized Fit | Streetwear and loose styling | Size up by 1–2 sizes |
| Boxy Fit | Modern streetwear shape | Choose based on chest width |
For oversized styling, explore our oversized fit collection, boxy T-shirts, or read the oversized T-shirt size guide.
Gildan — Everyday T-Shirts & Custom Printing
Gildan is a reliable choice for everyday wear, custom printing, and simple casual outfits. If you want T-shirts specifically, browse Gildan T-shirts.
| Gildan Size | Recommended Body Weight | Fit Feel |
|---|---|---|
| S | 47–55 kg | Slim to regular |
| M | 55–65 kg | Regular fit |
| L | 65–73 kg | True-to-size |
| XL | 73–82 kg | Comfortable fit |
| 2XL | 82–92 kg | Relaxed fit |
Gildan tip: If you are between two sizes, size up for better comfort, especially if you prefer a relaxed fit or plan to use the T-shirt for printing.
Helpful links: Gildan 76000, Gildan 76000L, Gildan 76000 size chart, and Gildan 76000L size chart.
American Apparel — Slim, Modern & Premium
American Apparel usually has a cleaner, more modern fit. Compared with Gildan, it can feel slightly slimmer depending on the style. For T-shirts, visit American Apparel T-shirts.
| American Apparel Size | Recommended Body Weight | Fit Feel |
|---|---|---|
| S | 47–55 kg | Fitted |
| M | 53–62 kg | Slim regular |
| L | 60–70 kg | Modern regular |
| XL | 68–78 kg | Comfortable regular |
| 2XL | 78–88 kg | Relaxed fit |
American Apparel tip: If you want a relaxed or oversized look, consider sizing up. If you prefer a sharp fitted look, choose your normal size.
Helpful links: American Apparel 2001CVC, American Apparel 1301, American Apparel 1301GD, American Apparel 9001, American Apparel 1PQ, and American Apparel size chart.
Comfort Colors — Relaxed, Boxy & Vintage Inspired
Comfort Colors is ideal if you like a relaxed, garment-dyed, vintage-inspired look. The fit usually feels more boxy and casual, making it a great option for oversized styling. Browse Comfort Colors T-shirts or Comfort Colors boxy T-shirts.
| Comfort Colors Size | Recommended Body Weight | Fit Feel |
|---|---|---|
| S | 47–56 kg | Relaxed regular |
| M | 55–65 kg | Comfortable regular |
| L | 63–72 kg | Relaxed fit |
| XL | 70–80 kg | Loose fit |
| 2XL | 78–88 kg | Oversized feel |
Comfort Colors tip: Since the look is naturally relaxed, choose your normal size for an easy fit or size up for a stronger oversized silhouette.
Helpful links: Comfort Colors 1717, Comfort Colors 3023CL, and Comfort Colors 1717 size chart.
Quick Brand Comparison
| Brand | Fit Style | Best For | Size Advice |
|---|---|---|---|
| Gildan | Regular fit | Daily wear and printing | Size up if between sizes |
| American Apparel | Slim to modern fit | Clean, fitted, premium looks | Size up for relaxed styling |
| Comfort Colors | Relaxed and boxy | Vintage and oversized outfits | Normal size for relaxed, size up for oversized |
How to Measure Your T-Shirt Size
The easiest way to choose the right size is to measure a T-shirt you already own and like.
- Lay the T-shirt flat on a table.
- Measure the chest width from armpit to armpit.
- Measure body length from the shoulder seam to the bottom hem.
- Compare those numbers with the size chart of the product you want to buy.
For more help, read our full guide on how to read a T-shirt size chart.
Best Size by Styling Preference
| Your Goal | Recommended Choice |
|---|---|
| Clean everyday fit | Choose your normal size |
| Relaxed casual fit | Choose normal size or one size up |
| Oversized streetwear fit | Size up by 1–2 sizes |
| Boxy modern fit | Choose boxy-fit styles or size up |
| Custom printing | Choose regular fit with enough chest space |
You may also like: what pants go with oversized T-shirts, oversized outfit ideas, and men’s plain white T-shirt outfit ideas.
FAQs About T-Shirt Sizes
What size is L for body weight?
Size L usually fits people around 65–75 kg, depending on height, chest width, and fit preference.
What size should I choose if I am 70 kg?
If you are around 70 kg, size L is usually a good starting point. Choose XL if you prefer a relaxed or oversized fit.
Should I size up for American Apparel?
Yes, if you prefer a relaxed fit. American Apparel often feels slimmer than standard regular-fit T-shirts.
Is Comfort Colors oversized?
Comfort Colors generally has a relaxed and boxy feel. Choose your normal size for a relaxed look or size up for oversized styling.
How do I avoid choosing the wrong size?
Measure a T-shirt you already like, check chest width and body length, then compare it with the brand’s size chart.
Need Help Choosing the Right Size?
If you are still unsure, compare products through our compare page, browse all collections, or contact us through the contact page.
You can also explore more sizing and styling guides on the Clavis blog.
