Instead, it may be simpler to remember that 1 lbf is equal to roughly 4.45 Newtons. Using this value, you can solve for mass and weight in an internationally approved way. What Is Mass, Fundamentally?

With that number known, we can solve the mass equation for the whole world. Every time you step on a bathroom scale, you're measuring the mass of the planet.

Atomic Number and Atomic Mass: Get here the easy notes on atomic number and atomic mass for all the first 30 elements. Know how to calculate atomic mass using atomic number.