Metric Conversion -Flax Seed Wheat Bread

Could anyone give a source or help with metric conversions? I haven't a scale yet, but have seen recipes..that I would like to try. Also, what is the difference between golden flax seed and the dark?
I eat (brown) flax every day as well. I never have detected any "fishy" taste; I find the taste pleasant and nutty. I grind up about a week's worth and sprinkle 1-2 Tablespoons on my morning yoghurt. I also sometimes put ground up flax meal into bread.
TY cnemmers & titus..appreciate your response. I am going to use flax in baking this weekend... a wheat with flax, sesame, poppy seeds and dried blueberries (blaisins? LOL)..and I will grind the flax first!! My husband & I are both going to try the ground flax in our yogurt too!