You add up what you have on your string, like a brass nock or string loop and peep. I can't tell you what the different ones weigh. I use a string loop and one of the peeps that looks like a black cheerio. The string loop weighs 4 grns and the peep weight 7. If you use a bigger peep or one with an alignment tube it will weigh more. I think a brass nock weighs around 7 grns, but don't quote me on that. And they have different sizes that weigh different.

I honestly don't add string silencers to the string weight unless you have them close to the center of the string. The closer they are to the limbs the less effect it has.

Paul