One percent by weight equals how many ppm?

One percent by weight equals how many ppm?

• A. 10,000 ppm
• B. 1,000 ppm
• C. 100 ppm
• D. 100,000 ppm

Answer: (A)

ppm is parts per million, so to convert from percent multiply by 1,000,000. One percent by weight is 0.01, and 0.01 × 1,000,000 = 10,000. Therefore, 1% by weight equals 10,000 ppm. For context, 0.1% is 1,000 ppm; 0.01% is 100 ppm; 10% is 100,000 ppm.

ppm is parts per million, so to convert from percent multiply by 1,000,000. One percent by weight is 0.01, and 0.01 × 1,000,000 = 10,000. Therefore, 1% by weight equals 10,000 ppm. For context, 0.1% is 1,000 ppm; 0.01% is 100 ppm; 10% is 100,000 ppm.