# How can I convert percent concentration to ppm?

##### 1 Answer

Jul 21, 2014

You multiply the % concentration by 10⁴.

% by mass =

ppm =

You want to know how many grams of solute are in 10⁶ g of solution.

10⁶ g soln ×

or

1 % = 10⁴ ppm

**EXAMPLE PROBLEM**

Convert a concentration of 0.241 % to parts per million.

**Solution**

0.241 % ×