Metric questions

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jmk - 25 Feb 2004 14:25 GMT

I weighed something yesterday but when I went to enter it, it said mL
and not grams. I checked the label and it sayd 1/2 cup (180 g). Grams
are always weight, right? And mL are always liquid measure? If I had a
175 g servering, would I put 175 mL? Confused.

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jmk in NC (on maintenance but still training myself on portion sizes)

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Ignoramus18484 - 25 Feb 2004 14:30 GMT

> I weighed something yesterday but when I went to enter it, it said mL
> and not grams. I checked the label and it sayd 1/2 cup (180 g). Grams
> are always weight, right? And mL are always liquid measure? If I had a
> 175 g servering, would I put 175 mL? Confused.

grams measure mass (weight in laymen parlance), and mL measure volume.

Most food, if it does not have a lot of air in it (think salad), is
approximately one gram per milliliter, the same density as water. Give
or take 10-20%.

i

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Doug Freyburger - 26 Feb 2004 18:40 GMT

> Grams are always weight, right? And mL are always liquid measure?

Yes and yes.

> If I had a 175 g servering, would I put 175 mL?

No that only works for water.

In the extreme case 175g of lead is a *lot* smaller than 175ml and
175g of feathers is a *lot* larger than 175ml.

Some foods sink so 175g will be smaller than 175ml. Some foods
float so 175g will be bigger than 175ml.

If you only use weight, is there any chance you can find listing
software than has weight entires for all of its items?

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jmk - 01 Mar 2004 13:09 GMT

>>Grams are always weight, right? And mL are always liquid measure?
>
[quoted text clipped - 12 lines]
> If you only use weight, is there any chance you can find listing
> software than has weight entires for all of its items?

Hmm. I'm talking about things like yogurt. The label lists the serving
size in grams. If I weight out a serving size from a large tub o'
yogurt, that should work, right?

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jmk in NC

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Doug Freyburger - 01 Mar 2004 20:36 GMT

> Hmm. I'm talking about things like yogurt. The label lists the serving
> size in grams. If I weight out a serving size from a large tub o'
> yogurt, that should work, right?

Chance are the label also lists the total size of the container in grams
as well. At very least, the nutrition label will say something like
"Serving size 50 grams, servings per container 3". From this you'll
know that if you divide it into 3 equal parts, they will be 50 gm
servings.

Sometimes it's easier to divide things up equally than to weight them or
put them in a cup.

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