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T-shirt weight refers to the thickness and heaviness of the fabric, usually measured in GSM (grams per square metre) or ounces. It indicates how light or heavy the shirt feels when worn. Heavier weights offer more durability, while lighter ones are softer and more breathable.
The weight of a T-shirt can vary significantly based on the fabric thickness, type, and size. Generally, a medium-sized cotton T-shirt weighs around 4.5 to 5.5 ounces, which is approximately 130–155 GSM. The fabric weight of a tee is typically measured in ounces per square yard or grams per square metre (GSM).
There are three types of t-shirts depending upon the weight, lightweight t-shirts, midweight (also known as middleweight or mediumweight) t-shirts, and heavyweight t-shirts. Lightweight T-shirts usually range from 120–160 GSM (3.5–4.7 oz), midweight tees fall between 160–200 GSM (4.7–5.9 oz), and heavyweight options start from 200 GSM (5.9 oz and above). Knowing the fabric weight helps determine comfort, durability, and how well the shirt will perform with different printing techniques.
The weight of your tee influences various factors, from the feel and fit to the durability and print results. Lightweight T-shirts (typically under 160 GSM) are ideal for hot climates and casual wear but may not hold up as well with heavy ink coverage or repeated washes. Midweight and heavyweight tees offer more structure, better opacity, and enhanced print clarity—making them a solid choice for detailed designs or premium merchandise. Choosing the right T-shirt weight ensures comfort for the wearer and a polished finish for personalised prints.
How much does an average T-shirt Weigh?
The weight of a T-shirt can vary based on several factors, including the fabric type (cotton, blends, synthetics), garment size, knit density, and whether it’s lightweight or heavyweight. On average, a medium-sized T-shirt made from standard cotton fabric weighs between 4.5 to 5.5 ounces, which is roughly 130 to 155 grams. Lightweight T-shirts (around 120–160 GSM or 3.5–4.7 oz) are ideal for warm climates and casual wear, while heavier shirts (200+ GSM or 6 oz and above) offer more structure and durability. Fabric weight is commonly measured in grams per square metre (GSM) or ounces per square yard (oz/yd²), helping manufacturers and consumers determine comfort, print suitability, and overall garment quality.
How to Measure the Weight of the T-Shirt?
T-shirt fabric weight is commonly measured using one of three key systems:
- GSM (grams per square metre)
- Ounces per square yard (oz/yd²)
- “Singles” (yarn count)
Each measuring method gives insight into the fabric’s density, feel, durability, and suitability for printing or daily wear. Let’s break them down:
1. Grams per Square Metre (GSM)
GSM is the metric standard used to measure how much one square metre of fabric weighs. A higher GSM means a thicker, denser, and generally more durable fabric, while a lower GSM indicates a lighter, airier material.
- Low GSM (120–160): Ideal for summer wear and lightweight, breathable tees.
- Mid GSM (160–200): Offers a balance between comfort and structure—great for everyday wear and printing.
- High GSM (200+): Heavier and more robust, suited for colder weather or premium tees.
2. Ounces per Square Yard (oz/yd²)
This is the imperial equivalent of GSM and expresses the fabric’s weight in ounces over one square yard. It’s widely used in the U.S. and Australia for comparing T-shirt weights.
- A standard T-shirt typically weighs between 4 to 7 oz/yd².
- The higher the oz/yd², the thicker and sturdier the fabric tends to be.
3. Singles (Yarn Count)
“Singles” refers to the yarn’s thickness and how many times the fibres have been twisted together during spinning.
- Higher singles (e.g., 30s or 40s): Finer, smoother, lighter fabric—often used in premium, soft-feel T-shirts.
- Lower singles (e.g., 18s or 20s): Thicker, coarser, and heavier—commonly used in basic or durable tees.
While GSM and oz/yd² tell you about the overall fabric weight, singles give insight into yarn fineness and fabric texture. Choosing the right T-shirt weight isn’t about higher = better. It depends on your intended use—whether you want something breathable and light for summer, thick and structured for long-term wear or bold prints. Understanding these measurements helps you choose a T-shirt that suits your climate, comfort preferences, and custom printing needs.
What are the Different T-shirt Weights?
T-shirts are generally classified into three categories based on fabric weight: lightweight (120–150 GSM / 3.5–4.5 oz), midweight (160–200 GSM / 4.7–5.9 oz), and heavyweight (200+ GSM / 6 oz and above).
- Lightweight T-Shirts (120–150 GSM / 3.5–4.5 oz/yd²): Lightweight t-shirts are soft, breathable, and ideal for hot climates, layering, or casual summer wear. They are great for DTG and light screen printing, but not suitable for embroidery due to thin fabric.
- Mediumweight T-Shirts (150–180 GSM / 4.5–5.3 oz/yd²): The midweight t-shirts are the most versatile option—comfortable for year-round use with a balanced feel. They work well with all major printing methods (DTG, screen, sublimation) and are suitable for embroidery.
- Heavyweight T-Shirts (180–200+ GSM / 5.3–6+ oz/yd²): Heavyweight t-shirts are thick, structured, and durable—great for cooler weather or premium apparel. They are ideal for bold, detailed prints and hold embroidery exceptionally well.
| T-Shirt Type | Weight Range | Best Printing Methods |
|---|---|---|
| Lightweight | 120–150 GSM / 3.5–4.5 oz/yd² | DTG, screen printing (light designs only) Not ideal for embroidery (may cause puckering) |
| Mediumweight | 150–180 GSM / 4.5–5.3 oz/yd² | DTG, screen printing, sublimation Embroidery (suitable for small-to-medium designs) |
| Heavyweight | 180–200+ GSM / 5.3–6+ oz/yd² | Screen printing, DTG (bold & detailed prints) Embroidery (ideal for stability and structure) |
Lightweight T-Shirts (120–150 GSM / 3.5–4.5 oz/yd²)
Lightweight T-shirts fall into the featherweight category, typically ranging from 120 to 150 GSM or 3.5 to 4.5 oz/yd². While the term “lightweight” might sound like a compromise on quality, these tees are anything but basic. Loved for their breathable comfort and versatility, they’re a go-to choice for warm climates, layering, or casual wear.
Feel and Comfort
Lightweight T-shirts are soft, airy, and almost weightless—perfect for hot weather or active use. The fabric drapes naturally over the body, giving it a flattering, relaxed fit across various shapes and sizes. Whether you’re designing merch for a summer event or creating a laid-back fashion line, lightweight tees are the ultimate crowd-pleasers.
Breathability
Thanks to their lower fabric density, these tees allow excellent airflow, helping to keep wearers cool during physical activity or in hot environments. They’re a favourite for fitness-focused brands, outdoor events, or anyone prioritising comfort without extra bulk.
Printability
Lightweight T-shirts are well-suited for DTG (direct-to-garment) printing, especially when using fine, intricate designs. The smooth surface allows crisp detail, though it’s important to avoid heavy ink saturation which may affect the fabric’s flexibility. These shirts aren’t ideal for embroidery, as the thin fabric can pucker under dense stitching.
Durability and Care
While lighter tees offer unbeatable comfort, they’re generally more delicate than mid or heavyweight alternatives. To extend their lifespan, it’s best to wash in cold water, use a gentle cycle, and air dry. Including care instructions with each garment helps customers keep their tees in top shape longer.
Mediumweight T-Shirts (150–180 GSM / 4.5–5.3 oz/yd²)
Mediumweight T-shirts fall right in the sweet spot—not too light, not too heavy, just a perfect in-between. Ranging from 150 to 180 GSM or 4.5 to 5.3 oz/yd², these tees strike a great balance between comfort, durability, and style. They’re versatile enough for year-round wear and tough enough to withstand regular use, making them a go-to for both casual fashion and everyday basics.
Feel and Comfort
Mediumweight T-shirts offer a well-rounded feel—soft and comfortable without feeling flimsy. They’re breathable enough for warm days but provide enough substance for layering during cooler weather. Customers will appreciate their premium hand feel, with just the right amount of drape and structure for a clean, polished look.
Breathability
Thanks to their balanced fabric density, these tees provide great airflow while still feeling substantial on the body. They’re comfortable for activewear, commuting, or lounging—perfect for when you want something that’s easy to wear in different temperatures and conditions.
Printability
Mediumweight tees are one of the most print-friendly options available. They handle a wide range of custom printing methods—including screen printing, DTG, and sublimation—with ease. The slightly thicker surface ensures bold, crisp results without compromising comfort, making them ideal for detailed logos, branding, or vibrant artwork.
Durability and Performance
These tees are more durable than lightweight options but still flexible enough for everyday comfort. They resist stretching and distortion, holding their shape well over time—even after multiple washes. For brands or businesses wanting reliable quality that lasts, mediumweight tees are a dependable choice.
If you’re catering to a wide audience, mediumweight T-shirts are your most adaptable option. They work across seasons, printing methods, and style preferences, offering excellent value without sacrificing quality or wearability. Ideal for daily use, branded merch, retail collections, or uniforms.
Heavyweight T-Shirts (180–200+ GSM / 5.3–6+ oz/yd²)
Heavyweight T-shirts, typically falling in the 180 to 200+ GSM or 5.3 to 6+ oz/yd² range, are built for comfort, durability, and style. They have a noticeably thicker and more substantial feel, offering a premium hand feel that signals quality from the first touch. These tees drape differently—creating a structured silhouette that’s both stylish and polished, making them a popular choice for streetwear, high-end fashion drops, and winter-ready collections.
Feel and Comfort
Heavyweight tees offer a denser, softer fabric that feels plush and luxurious. They provide a more structured fit that holds its shape well, giving a tailored look without sacrificing comfort. Ideal for customers who want a shirt that feels like a wardrobe staple—not just a throwaway layer.
Breathability
While they’re not the most breathable choice for hot summer days, heavyweight T-shirts shine in milder or cooler weather. Think autumn afternoons, breezy nights, or layering during winter—this is where they excel. They offer a touch of extra warmth without needing a second layer.
Printability
When it comes to printing, heavyweight tees are unmatched in performance. The thicker surface holds screen prints, DTG, and heat transfers with clarity and definition, helping bold graphics and colours pop. Their structure prevents puckering and preserves designs over time—even after many washes.
Durability and Longevity
Durability is where heavyweight T-shirts truly stand out. Their dense knit resists stretching, fading, and wear, making them ideal for high-wash environments, workwear, or long-term merchandise. If you’re offering premium products or limited runs, heavyweight T-shirts send the message of quality and longevity.
If you’re creating a premium collection or want a shirt that lasts the distance, heavyweight T-shirts are a solid investment. They combine durability, style, and standout print quality—making them a favourite for serious buyers, bold brands, and cooler weather essentials.
What is a T-Shirt Weight?
T-shirt weight refers to the thickness and density of the fabric, typically measured in grams per square metre (GSM) or ounces per square yard (oz/yd²). It indicates how heavy or light the material feels and plays a key role in determining the shirt’s comfort, durability, breathability, and printability. Lightweight T-shirts are thin and airy, ideal for warm climates, while heavyweight options are thicker, more structured, and suited for cooler weather or bold prints. Understanding T-shirt weight helps you choose the right garment for its purpose—whether it’s for casual wear, active use, or custom printing.
How many grams does a good quality T-shirt weigh?
A good quality T-shirt typically weighs between 150 to 180 grams per square metre (GSM). This midweight range is considered the sweet spot for everyday wear—offering a balance between softness, structure, and durability. It’s comfortable enough for regular use, strong enough to hold up after multiple washes, and versatile for various printing techniques like DTG, screen printing, or sublimation. Whether you’re designing branded merch or building a casual wardrobe, this weight class delivers consistent performance and feel.
How many grams does a heavy T-shirt weigh?
A heavy T-shirt usually weighs 180 GSM or more, with some heavyweight styles reaching up to 220 GSM or beyond. These shirts are thicker and denser and offer a more premium, structured feel. They’re ideal for colder climates, workwear, or fashion pieces where durability and shape retention are a priority. Heavyweight tees also provide a stable base for bold screen prints and detailed embroidery, making them a popular choice for premium apparel collections and streetwear brands.
What Factors Influence T-Shirt Weight?
T-shirt weight is determined by more than just fabric thickness—it’s shaped by the type of material, yarn quality, and how the fabric is processed.
- Fabric Type: The material plays a big role. Cotton tends to be heavier and more breathable, while polyester is lighter, moisture-wicking, and wrinkle-resistant. Blends like cotton-poly or tri-blends fall somewhere in between, offering balanced softness and durability.
- Yarn Count & Knit Density: Yarn count (e.g. 30s or 18s) indicates yarn thickness—higher numbers mean finer yarns and lighter fabrics, while lower counts result in thicker, heavier tees. Tighter knits increase fabric weight and improve durability.
- Finishing Treatments: Processes like enzyme washing or brushed finishes soften the fabric and can impact overall weight and feel. Some finishes lighten the fabric, while others add texture and structure.
- Added Fibres or Treatments: Fabrics with spandex, UV protection, or antibacterial coatings may weigh more due to added density or chemical treatments.
How to Pick the Right T-Shirt Fabric Weight?
The ideal T-shirt weight largely depends on how and where the shirt will be worn, as well as what you plan to do with it—whether that’s custom printing, embroidery, or simply wearing it day to day. For hot climates, fitness, or outdoor events, lightweight T-shirts (120–150 GSM) are your best bet. They’re breathable, airy, and comfortable against the skin, making them perfect for activewear or summer promotional tees.
If you’re after a versatile, all-season option suitable for casual wear, retail merchandise, or uniforms, mediumweight T-shirts (150–180 GSM) offer the best of both worlds. They strike a balance between softness and structure, providing enough body for a polished appearance without feeling too heavy. This makes them an excellent choice for custom printing, especially when combining comfort and print clarity.
For premium collections, workwear, or cooler conditions, heavyweight T-shirts (180–220+ GSM) are the go-to. Their dense, structured fabric delivers durability and a high-end feel—ideal for bold screen prints or embroidery. These tees are designed to last and maintain their shape through frequent wear and washes, making them a smart choice for customers who value quality and longevity.
Ultimately, choosing the right fabric weight ensures your T-shirts not only feel great but perform well over time. Whether you’re creating merch, building a brand, or just choosing for comfort, aligning the fabric weight with the purpose is key to getting it right.
How Does T-Shirt Weight Affect Custom Printing?
T-shirt weight directly influences how well your custom prints turn out—and how long they last. Lightweight T-shirts (120–150 GSM) have thinner fabric, which makes them ideal for soft, breathable designs using DTG (direct-to-garment) printing. They work best with fine artwork or minimalist designs, but heavy ink coverage or dense prints can cause cracking, distortion, or fabric sag over time. Embroidery is usually not recommended on lightweight tees, as the thin material may pucker.
Mediumweight T-shirts (150–180 GSM) are the most reliable for customisation. They can handle screen printing, DTG, sublimation, and even light embroidery. The fabric is thick enough to support bold colours and details while still being soft and wearable. It’s the go-to for brands and businesses that want versatility across styles and techniques.
Heavyweight T-shirts (180–220+ GSM) provide the most stable surface for screen printing and embroidery, especially for high-contrast graphics or complex logos. The thicker material prevents puckering and supports high ink saturation without bleed-through. However, DTG on heavyweight tees may feel a bit stiffer if too much ink is used, so adjusting the design and technique is key.
