Shopping guide

How to Measure Yourself Before Buying a Men's T-Shirt

Measure once, check the right chart and ask better fit questions before choosing a T-shirt size online.

By September 15, 2026
THEMENCO Varsity Arch Men’s T-Shirt with an arched light-colored THEMENCO wordmark across the chest on black

A size letter on its own tells you very little about how a T-shirt will fit. Before ordering, collect a few measurements and check which kind of chart the store provides. The THEMENCO size guide lists chest, waist and hip ranges in inches and includes fit guidance. Read the current chart rather than relying on a size you bought from another brand.

Prepare a flexible measuring tape

Stand naturally, keep your shoulders relaxed and avoid holding your breath. Use a flexible tape, ideally with help from someone who can check that it stays level across your back. Write down the measurements and units instead of trying to remember them. If you use centimeters, one inch equals 2.54 centimeters; convert consistently before comparing a chart in inches.

Record your chest measurement

Wrap the tape around the fullest part of your chest, under your arms and across your back. Keep it horizontal and comfortably close to your body without pulling it tight. Take the measurement again to check consistency. Do not puff out your chest or deliberately leave a large gap in the tape to create an oversized fit.

Check waist and hip where relevant

Measure your natural waist without drawing in your stomach. For the hip measurement, keep your feet together and pass the tape around the fullest part of your hips. These measurements help you understand how the lower part of a top may sit, particularly if you prefer a longer hem. A shoulder, sleeve or body-length measurement is useful only when you have a corresponding garment measurement to compare it with.

Do not mix body and garment measurements

A flat chest width measured across a T-shirt is not the same number as a chest circumference measured around a person. Doubling a flat width gives an approximate garment circumference, not a guarantee of fit: cut, stretch and the room built into the garment also matter. Keep your own body measurements and any measurements from a favorite tee labeled separately.

Use the chart, then resolve uncertainty

Compare the full range of measurements with the selected product's fit information. If you fall between sizes or need exact garment dimensions, contact THEMENCO with the product name, your measurements and your preferred fit. Do not assume that choosing a larger size changes only the chest; the length and sleeves may change too. Once you have resolved fit, browse the T-shirt collection for the design you want to wear.