You will need a measuring tape to measure your clothing size. Hold the measuring tape close to your neck, but without pressing it hard against the neck.
Measure your neck size at the base of the neck.
Measure your chest size at the widest part of your chest. Hold the measuring tape against your shoulder blades.
Measure your sleeve length with a slightly bent arm from the top of your shoulder blade to the place on your wrist where you would like the sleeve to end.
Measure your waist above your hips.
5. Pant length
Measure your pant length on the inner side of your leg from your groin to the floor. You can also measure the length of the internal seam from the groin to the end of the pant on a pair of pants that fits you well.