Convert 338 mg/kg to PPM | 338 mg/kg = 338 ppm

Quick Answer: 338 mg/kg = 338 ppm

Milligrams per kilogram
=
Parts per million
Conversion Result
338 mg/kg = 338 ppm

mg/kg and PPM are identical by definition

338 mg/kg = 338 ppm

Explanation:

  1. By definition: 1 mg/kg = 1 mg per 1,000,000 mg = 1 part per million
  2. Therefore: 338 mg/kg = 338 ppm (always equal)

Similar mg/kg to PPM Conversions

Values close to 338 mg/kg for quick reference:

mg/kg PPM Application context
0.1 mg/kg 0.1 ppm
100.1 mg/kg 100.1 ppm Typical agricultural threshold
200.1 mg/kg 200.1 ppm
300.1 mg/kg 300.1 ppm
400.1 mg/kg 400.1 ppm EPA lead limit (play areas)
500.1 mg/kg 500.1 ppm Common food additive limit
600.1 mg/kg 600.1 ppm
700.1 mg/kg 700.1 ppm
800.1 mg/kg 800.1 ppm

See Also

Frequently Asked Questions

How much is 338 mg/kg in ppm?

338 mg/kg equals 338 ppm. mg/kg and PPM are always equal by definition.

How do I convert 338 mg/kg to ppm?

338 mg/kg = 338 ppm. No calculation needed — mg/kg and ppm are the same unit expressed differently.

Are mg/kg and ppm always equal?

Yes, always. 1 mg/kg = 1 ppm by definition. Unlike mg/L (which depends on solution density), mg/kg is a mass/mass ratio identical to ppm in all cases.

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.

Conversion factors verified against NIST, BIPM Based on SI definitions (BIPM). Last reviewed: March 2026
Tiago Fernandes Reviewed by Tiago Fernandes