Warhammer T-Shirt Size Guide: Finding Your Perfect Fit

Quick answer

The most reliable way to find your Warhammer t-shirt size is to measure a t-shirt you already like, then match those numbers to the size chart for the specific item you want. Do not assume you are the same size across every garment: a 100% cotton tee, a ringspun cotton-blend hoodie, and a cap all fit differently. Measure first, then order.

Official Warhammer apparel spans a wide range of garments, from a standard cotton tee to a heavyweight hoodie, and each one is cut and sized on its own terms. That is why the same person can wear a medium in one garment and a large in another without either being wrong. The goal is not to memorize a single number; it is to measure once, then apply those numbers to the item you actually want.

This guide walks you through a repeatable process: measure a shirt you already own, compare it to the size chart, and choose based on fit preference rather than guesswork. It also flags the common mistakes that lead to returns, especially around cotton shrinkage, unisex cuts, and confusing chest width with body width.

Why Warhammer apparel sizing is not one-size-fits-all

Different Warhammer garments use different fabrics and cuts. A 100% cotton t-shirt at 145 gsm behaves differently from an 80% ringspun cotton, 20% polyester hoodie at 280 gsm. Cotton-rich tees tend to have less stretch and can shrink slightly with a hot wash, while a ringspun blend usually feels softer and holds its shape more predictably. Neither is better; they just fit differently on the same body.

Caps add another variable. A cap is sized by head circumference, not chest, and many official designs use an adjustable fabric strap with a metal buckle rather than a snapback. That means you are adjusting to a range, not picking a fixed hat size. Treat each product category as its own sizing problem rather than assuming your t-shirt size transfers everywhere.

• Check the product page size chart before you measure, so you know which numbers matter.
• If a chart is missing a measurement you need, treat that as a limitation and size up rather than guessing down.

Step 1: Measure a t-shirt you already own

Lay a t-shirt you already like flat on a table. Smooth out wrinkles but do not stretch the fabric. Measure straight across the chest from one armpit seam to the other, then double that number to get the full chest circumference. Next, measure from the highest point of the shoulder down to the bottom hem for body length. Finally, measure from the shoulder seam to the end of the sleeve for sleeve length.

Write these three numbers down. They are your baseline, and they are far more useful than a vague memory of being a medium. If you are between sizes on the chart, your baseline tells you which way to go based on whether you want a closer or looser fit.

• Common mistake: measuring a stretched or shrunken old shirt and treating it as your true size.
• Checkpoint: your flat chest measurement doubled should roughly match the chart's chest circumference, not the flat width.

Step 2: Compare your measurements to the size chart

Match your chest, body length, and sleeve numbers to the chart for the exact garment you want. Charts usually list chest circumference, body length, and sometimes sleeve length. If your chest measurement lands between two sizes, decide based on fit preference: size down for a fitted look, size up for a relaxed or layered look. Do not split the difference by ordering one of each unless you plan to return one.

Pay attention to the size range offered. Some Warhammer tees run from Small to 4XL, while certain hoodies extend to 5XL. A wider range often means the cut is designed to accommodate more body types, but it does not guarantee the same fit as another garment in the same size label.

• Common mistake: assuming a size label means the same thing across every Warhammer garment.
• Checkpoint: if the chart only lists chest and length, use those two and ignore sleeve if you are unsure.

Step 3: Account for fabric and shrinkage

A 100% cotton tee can shrink slightly, especially if it is washed or dried at high heat. The care instructions for official Warhammer tees typically call for a cold machine wash with like colours, no bleach, no dry cleaning, and no tumble drying. Following those instructions protects the print and limits shrinkage, so the shirt you receive stays close to the size you measured.

Hoodies made from an 80% ringspun cotton and 20% polyester blend at 280 gsm generally feel softer and more stable, but they still have their own care rules. Some hoodies specify no ironing at all, which matters if you are tempted to press a wrinkled print. Read the care label on the product page before you decide your size, because how you wash it affects how it fits six months from now.

• Common mistake: tumble drying a cotton tee and then blaming the size chart.
• Checkpoint: if you plan to dry on high heat, size up; if you will air dry, stay true to your measurement.

Step 4: Choose the right size for the fit you want

Once you have your measurements and the chart, make a deliberate choice. A fitted look means your chest measurement should sit close to the chart's chest circumference with little extra room. A relaxed look means adding roughly 5 to 10 cm of ease over your measured chest. A layered look over a hoodie means adding more, or simply sizing up one step.

If you are buying a gift and cannot measure the recipient, a size chart is your only reliable tool. Avoid guessing based on height or build alone. When in doubt, a slightly larger size is easier to wear casually than one that is too tight, and it gives the recipient room to layer.

• Common mistake: ordering your usual letter size without checking the chart for that specific garment.
• Checkpoint: write down your target chest, length, and sleeve numbers before you add to cart.

Step 5: Check the return and exchange options before ordering

Even with careful measuring, fit is personal. Before you order, confirm how returns or exchanges work for the item you want. This is especially important for printed garments, where the design is applied to a specific blank and the sizing may differ from a plain tee you own. Knowing the policy in advance turns a risky purchase into a manageable one.

If you are ordering multiple sizes to compare, keep the tags on and avoid washing anything until you have decided. Once a garment is washed, it is usually not returnable, and shrinkage from a hot wash can make a correct size feel wrong.

• Common mistake: washing before confirming fit, which can void a return.
• Checkpoint: keep tags attached and the original packaging until you are sure.

Your five-step Warhammer t-shirt sizing process

1. Measure a shirt you already own: Lay it flat, measure armpit to armpit and double it for chest circumference, then measure body length and sleeve length. Common mistake: measuring a stretched or shrunken shirt instead of a good-fitting one.
2. Match your numbers to the product size chart: Compare chest, length, and sleeve against the chart for the exact garment, not a different Warhammer item. Checkpoint: if you land between sizes, size down for fitted and up for relaxed.
3. Adjust for fabric and shrinkage: Cotton tees can shrink with heat; ringspun blends are more stable. Follow cold wash and no tumble dry where specified. Common mistake: drying on high heat and losing the fit you measured for.
4. Pick your fit preference: Add roughly 5 to 10 cm of ease for relaxed, less for fitted, and more if you plan to layer over a hoodie. Checkpoint: write down your target chest and length before adding to cart.
5. Confirm returns before you wash: Check the exchange policy and keep tags on until you are sure the fit works. Common mistake: washing first, which usually makes the item non-returnable.

Official Warhammer apparel sizing examples

• Warhammer 40,000 3rd Edition: Codex Space Marines T Shirt: 100% cotton, 145 gsm, available in Small to 4XL on Black, Navy and Heather Grey. A cotton tee at this weight is a good baseline for measuring; expect minimal stretch and follow cold wash, no tumble dry care to limit shrinkage.
• Warhammer 40,000: Imperial Knights Graffiti Insignia Hoodie: 80% ringspun cotton, 20% polyester, 280 gsm, available in Small to 5XL. The ringspun blend feels softer and the wider size range suits more body types, but the care label says do not iron, so plan your fit around that.
• T'au Empire Icon Cap: Adjustable fabric strap with a metal buckle, not a snapback, with a pre-curved peak and stitched ventilation eyelets. Cap sizing is head circumference, not chest, so use the adjustable strap range rather than your t-shirt size.

Measure a shirt you already like, compare those numbers to the chart for the exact Warhammer garment you want, and choose based on how you actually wear it. That process takes five minutes and saves you the guesswork, the return shipping, and the disappointment of a print you cannot wear.