Is it possible to work out the total calories from nutritional info?

SteveMFP123

This may be a stupid question but can you work out a foods calories from the nutritional info? I enjoy the freshly topped pizzas from Sainsbury's but there's no label on them so I emailed them and they gave me the following info:

Energy 1176.7g
Fat 10.1g
Saturates 5.0g
Sugars 4.9g
Salt 1.63g

But there's nothing about the calories, and I was wondering if it's possible to calculate it from the information they gave me.

Regards,

rungirl1973

Calories are energy.

segacs

Yes, the calories in this case are 1176.7.

And to answer your other question, sort of but not really. In theory, if you add up protein x 4, carbs x 4 and fat x 9, you'd get total calories. In practice, due to rounding errors, this can be off by quite a bit.

Remember that all nutrition labels have about a 20% margin of error that's allowable by law.

SteveMFP123

rungirl1973 wrote: »

Calories are energy.

I was right then, it was a stupid question

jgnatca

1176.7 calories. What's the portion size?

segacs

SteveMFP123 wrote: »

rungirl1973 wrote: »

Calories are energy.

I was right then, it was a stupid question

Nah. No stupid questions. The only stupidity is not asking the questions and therefore not learning.

jim180155

SteveMFP123 wrote: »

This may be a stupid question but can you work out a foods calories from the nutritional info? I enjoy the freshly topped pizzas from Sainsbury's but there's no label on them so I emailed them and they gave me the following info:

Energy 1176.7g
Fat 10.1g
Saturates 5.0g
Sugars 4.9g
Salt 1.63g

But there's nothing about the calories, and I was wondering if it's possible to calculate it from the information they gave me.

Regards,

Protein and carbs are about 4 calories per gram and fat is about 9 calories per gram. So yes.

Or no. I looked again at the info they gave you. "Energy" is not measured in grams. I don't know what that's supposed to mean. And I don't see any protein listed, which I think is probably a mistake. And it has only 10.1 grams of fat. What kind of crappy pizza has only 10 grams of fat?

If I were you I'd make sure I never ate that pizza again.

SteveMFP123

jgnatca wrote: »

1176.7 calories. What's the portion size?

I have half for dinner.

segacs

jim180155 wrote: »

Or no. I looked again at the info they gave you. "Energy" is not measured in grams. I don't know what that's supposed to mean.

I'd just assume it's a typo in the email. Sounds like calories to me.

jim180155

But where is the protein? And what kind of fake pizza has only 10 grams of fat?

RUN away from that "pizza."

Abby2205

I think the 1176.7 is supposed to be in kilojoules, ie. 281 calories. I did a little search and this is how Sainsbury's reports their nutrition info for pizza:
http://www.sainsburys.co.uk/shop/gb/groceries/sainsburys-thin---crispy-meat-feast-pizza-10-325g
So I think for your pizza, 1/2 pizza is 1176.7 kJ or 281 calories with 10.1 g of fat. Unfortunately because you only received the upper part, you can't figure out the carbs or protein. The best you can say is carbs+protein=190 calories=47 grams. For me I might just estimate 24 g carbs and 23 G protein because that seems to be a reasonable split. That was a lot of work for one little pizza.

jgnatca

no kidding!
You guys are amazing.

NK1112