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oakiiedoe · October 15th, 2008

I need some help I'm getting hoodies manufactured. what is the convertion of 8ounces to Gsm? and how can you calculate that equation is there a formula.I know 7.1ounce is 215 gsm ..........

Thanks
Best Regards Mr.Fredeling

ino · October 16th, 2008

1 ounce is 28.35 grams.
1 gram is 0.03527 ounces.

Solmu · October 16th, 2008

Ignore ino's advice, as it's dead wrong. The measurements are area, not linear distance/weight. So one ounce per square yard is equal to 33.90 grams per square meter. Making a typical 6.1oz shirt 206.82gsm (commonly labelled 205gsm).

One of Google's much under-utilised features is a calculator. It can convert all kinds of things, for example:

Quote:

Originally Posted by Jason Kottke


	In addition to playing with big numbers, the calculator can help you finally figure out the number of drams in a pennyweight (~0.878 drams/pennyweight), rods in a fathom (~0.364 rods/fathom), or the speed of light in knots (582,749,918 knots)

Not to mention Douglas Adam's meaning of life (42), the number of horns on a unicorn (1), cooking measures (teaspoons, etc.). So I now know that one cubic mile holds 8.45657969 × 10^14 US teaspoons. Basically if it's a known and quantified system of measurement, there's a good chance it'll be built in.

So... if you go to Google and type something like this into the search bar:

8 ounces per square yard = ? grams per square meter

You will see this:

(8 ounces) per (square yard) = 271.24598 grams per (square meter)

...it will also tell you that 7.1sq/oz is actually 240gsm.

skdave · October 16th, 2008

You seem to be confused. "grams per sq metre?"

ino · October 17th, 2008

Now I,m really confused. Oh well.

Solmu · October 17th, 2008

I'm not sure which part is confusing - is it the difference between area, volume, and linear measurement? Fabric weight is measured by weight per area. Otherwise it wouldn't be consistent across clothing sizes, or fabric bolt widths.

moksha · April 23rd, 2009

Knit fabrics are measured according to weight.
Woven fabrics are measured according to area.

To make this easier consider this...

1 yard does not equal 1 meter, so you can't directly convert them. To get the proper conversion you need to take into account that 1 meter equals 1.09 yards.

Here is how to convert oz/yard2 to g/m2

1oz/yard2 = 33.9g/m2
1g/m2 = 1oz/yard2 / 33.9

33.9 x oz = gsm weight (grams per square meter)

oakiiedoe · April 23rd, 2009

I honestly for about this thread I'e posted but thanks for the great info.

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Converting ounces to grams per sq metre?