Do I need to weigh eggs if I'm counting calories?

Hell no. Don't worry about such details. Even if food labels were 100% accurate (they are not), and even if you weighed every gram of everything, that still wouldn't guarantee you anything because you don't know exactly how many calories you burn that day.

Entering 2 eggs is good enough. Make sure the egg nutrition entry seems reasonable of course.

It’s not worth it past one time. That will give you a number to go off of after that. Eggs , depending on size (large,etc) won’t really vary enough to worry about.

I weigh everything (even butter) because I learned a very valuable lesson. The vegan butter I used said 1 tbsp was a serving and it was xx amount of grams (don’t remember) when I weighed it versus using the tablespoon, the amount of grams was slightly more than 1/2 a tablespoon (and the weight is was they calculate calories on) so each time I used that, I was getting 50 more calories than I thought. No 2 eggs are exactly the same size.

I'm pretty close to the "weigh everything" end of the spectrum, but I don't weigh eggs. Here in the US, the calorie variation in commercial size-graded eggs is quite small.

Normally, US large eggs will vary in the range of 54.34 to 61.41 grams. USDA says eggs are around 143 calories per 100g. Therefore, the calorie range would be around 77.7-87.8 calories per large egg. Some eggs will be around the lower end, others higher end, so it'll average out.

Personally, I'd have to eat a lot more eggs than I do for the calorie variation around that average to make much difference in my body weight results. (I don't even know whether the 143 calories per 100g includes the shell or not, and don't much care.) I'm not going to obsess over 10 calories per egg.

You see my point: All of this is estimates. Much of it will vary in ways we can't measure. (One apple is sweeter than the next, one piece of meat of a certain grade has a little more or less fat, etc. . . . plus we all routinely move a little more or less on some days vs. others on the job or doing home chores.)

Pretty close on average is good enough to succeed.

It's good to be accurate, it's not good to obsess. The exact line where obsession starts varies from one person to the next, because it's a psychological state, not an objective behavioral act. Me, I rough guess at some point at the impact, as described above, decide, and go on with life.

You can decide what works for you.

Best wishes!

I would weigh one egg of the size you usually eat and then call every egg that weight.

You do have to do this system reasonably accurately - you do not have to do it to nth degree of perfection.