Convert GSM and oz/yd²

Convert GSM and oz/yd²

• GSM aka g/m² = grams per square meter
• oz/yd2 = ounces per yard squared
• g/m = gram per linear meter
• oz/yd = ounces per linear yard,
• g/yd2 = gram per yard squared *
• oz/m2 = oz per meter squared *

• 1 gram = 0.03527 ounces
• 1 lb = 16 oz = 453.59237 grams
• 1 inch = 2.54 cm
• 1 yd = 36 inches = 0.9144 m = 91.44 cm

Conversion Formulas

There is an easy way to convert gsm to oz/yd².
Divide the gsm by 33.906 - really that is all.
To determine gsm from oz/yd2 you do the reverse - multiple by 33.906.

If it helps, this is what the formulas are based upon:

• 1 oz = 28.3495231 grams (oz to grams converter)
• 1 yard = 0.9144 meters (yards to meters converter)
• 1 yard squared = 0.9144 m x 0.9144 m = 0.83612736 meters squared

Therefore

• 1 oz/yd² = 28.3495231g/.83612736 m² = 33.90574744 g/m2
• Rounded up to three decimal places it is 33.906

Question : If a fabric is 5.5oz/sq yard, how many the weight is in grams/sq meter ?
Answer : 5.5 oz/sqyd x 33.906 = 186.483 gm/sqm

 Fabric Weight Conversion Chart

g/m² (gsm)	oz/yd²	Fabric Weight width 150 cm per meter
50	1.47	75
60	1.77	90
70	2.06	105
80	2.36	120
90	2.65	135
100	2.95	150
110	3.24	165
120	3.54	180
130	3.83	195
140	4.13	210
150	4.42	225
160	4.72	240
170	5.01	255
180	5.31	270
190	5.60	285
200	5.90	300
210	6.19	315
220	6.49	330
230	6.78	345
240	7.08	360
250	7.37	375
260	7.67	390
270	7.96	405
280	8.26	420
290	8.55	435
300	8.85	450
310	9.14	465
320	9.44	480
330	9.73	495
340	10.03	510
350	10.32	525

How much does a t-shirt weigh?

This depending on the fabric weigh and size, probably from 5 to 7 ounces per square yard, size M to XXL, You should be OK with an assumption of 135g to 170g.

Fabric weight Chart