How much to eat if I want to gain weight?

No one can answer that.

Take a best guess. Track intake accurately and monitor weight and body composition, adjust until you are happy at the rate you are gaining.

gym4life64 wrote: »

Just eat MORE. Make sure you get at LEAST 1.5g of protein, but don't worry too much about counting...just eat

Eating more is the only good advice from this.

No one natural needs that much protein and not tracking is a sure fire way to end up gaining fat and not learning about what your body requires to change.

Dern420 wrote: »

How much do I have to eat per day to gain weight? Perfect scenario would be .5 lbs of muscle per week once I finish my physio exercises and get back into weight lifting.

Here are my stats:

Gender: male
Age: 22
Height: 5 ft 9
Weight: 134 lbs

Right now, I am trying to hit 2860 calories daily, and get at least:

328 carbohydrates
53 fat
149 protein

Which is, 45%, 15%, and 20% respectively.

Btw, this only equals 80%

You've got some good advice up there about guessing and adjusting. You can add this guess to things as well. 2500 calories per lb muscle + 3500 calories per lb of fat (that's very general and only partially correct, but it'll put you in the same ballpark as your goal). If you're going to gain 0.5 lb muscle per week it will be about 50/50 muscle/fat so you'll need about 6000 extra calories per week, or about 860 extra per day.

Oh yeah, no lifting = no muscle. Just an extra suggestion, you might want to increase your fat calories a smidge

ndj1979 wrote: »

Rusty740 wrote: »

You've got some good advice up there about guessing and adjusting. You can add this guess to things as well. 2500 calories per lb muscle + 3500 calories per lb of fat (that's very general and only partially correct, but it'll put you in the same ballpark as your goal). If you're going to gain 0.5 lb muscle per week it will be about 50/50 muscle/fat so you'll need about 6000 extra calories per week, or about 860 extra per day.

Oh yeah, no lifting = no muscle. Just an extra suggestion, you might want to increase your fat calories a smidge

To gain one pound per week at .5 muscle gain would be 3500 cals per week...

Oh yeah I messed that math up didn't I, lol. What I meant was 0.5 lb muscle at 2500 cals/lb would be an extra 1250 plus the 0.5 lb of fat that's gonna come with that 0.5 lb of muscle would be an extra 0.5 lbs at 3500 cals/lb for 1750 more and a total of 3000 per week extra.

I read the 2500 cals/lb for muscle on some hokey website but I'm stickin' with it )

psuLemon wrote: »

Dern420 wrote: »

My BMR is approximately 1600 calories a day (averaged from several calculator sites)... so how much surplus to add to that?

Just start with 2900 which is what you where eating. Monitor that for 3-4 weeks. If you do not gain, add another 10% on top of that.

This is good advice. If you like to calculate things (that's me). This is what I snagged from one of them.

If you are "lightly active"
You need 2,361 Calories/day to maintain your weight. <--- This is your TDEE at "lightly active"
You need 1,861 Calories/day to lose 1 lb per week.
You need 1,361 Calories/day to lose 2 lb per week.
You need 2,861 Calories/day to gain 1 lb per week. <--- This is you at plus 0.5 lbs muscle and 0.5 lbs fat.
You need 3,361 Calories/day to gain 2 lb per week.

Mfp calculates it for you.

Sounds like you have your TDEE figured out. Monitor how your body reacts to the 2800 calories, if you are not gaining in a few weeks, you may slowly add calories until you start getting the results you want. I wouldn't aim to gain more than 1 lb/wk or you will be adding a lot of unnecessary fat and same muscle as you would at a slower gain rate. For me personally I figure out my macros by doing 1.0-1.25 grams protein/lb bw, 0.3 grams fat/lb bw, and fill in the rest with carbs. I don't worry about percentages, they will fill out where they need to.

gym4life64 wrote: »

Just eat MORE. Make sure you get at LEAST 1.5g of protein, but don't worry too much about counting...just eat

musclesandmusic866 wrote: »

I would try to get 1.5g of protein per pound of body weight.

Here's an article about the myth of 1g/lb + for protein intake. There's no benefit past .82 g/lb and that includes a mark up. http://bayesianbodybuilding.com/the-myth-of-1glb-optimal-protein-intake-for-bodybuilders/

When people say "just eat more", they usually have a high amount of fat on themselves, but if the OP doesn't mind that, then go ahead and take that advice... depends on what you want to look like. No benefit to getting fat. You'll gain fat, but there's no reason to get fat, if you know what I mean, especially if you care about health and how you look.