Mass concentration.
Milligrams per Fluid ounce to Parts per million water Converter — mg/fl oz to ppm
Convert Milligram per Fluid ounce (mg/fl oz) to Parts per million water (ppm) using the exact conversion factor (1 milligram per fluid ounce = 33.8140227 parts per million water). See the formula, worked examples, and conversion table.
Milligrams per Fluid ounce to Parts per million water converter
Converter
Chemistry Converter
Convert concentration, molarity, amount, and laboratory scientific units by compatible family.
Context values
Some unit families need one extra value for a physically accurate result.
Approximate mg/L in water.
Result = input x 0.0338140227 / 0.001.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Fluid ounce to Parts per million water
Milligram per Fluid ounce and Parts per million water both measure mass concentration — how much of a substance is dissolved or dispersed in a given volume — a core calculation for preparing lab solutions, checking water quality against a regulatory limit, or formulating a pharmaceutical dose. Specifically: Mass concentration, and approximate mg/L in water.
Formula
parts per million water = milligrams per fluid ounce × 33.8140227018
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram per fluid ounce equals 0.0338140227018 base units, and 1 parts per million water equals 0.001 base units, so dividing one by the other gives the direct milligram per fluid ounce-to-parts per million water factor of 33.8140227018.
Simple example
1 mg/fl oz × 33.8140227 = 33.8140227 ppm
1 milligram per fluid ounce = 33.8140227 parts per million water.
Real-world example
100 mg/fl oz × 33.8140227 = 3,381.40227 ppm
100 milligrams per fluid ounce = 3,381.40227 parts per million water.
Conversion table
| Milligram per Fluid ounce (mg/fl oz) | Parts per million water (ppm) |
|---|---|
| 0.001 mg/fl oz | 0.0338140227 ppm |
| 0.01 mg/fl oz | 0.338140227 ppm |
| 0.1 mg/fl oz | 3.38140227 ppm |
| 1 mg/fl oz | 33.8140227 ppm |
| 10 mg/fl oz | 338.140227 ppm |
| 100 mg/fl oz | 3,381.40227 ppm |
Reverse conversion: Parts per million water to Milligram per Fluid ounce
33.8140227 ppm × 0.02957352956 = 0.9999999999 mg/fl oz
33.8140227 parts per million water = 0.9999999999 milligrams per fluid ounce.
milligrams per fluid ounce = parts per million water × 0.0295735295625
For a page dedicated to this direction, see Parts per million water to Milligram per Fluid ounce.
Understanding the Milligram per Fluid ounce (mg/fl oz)
Mass concentration.
Understanding the Parts per million water (ppm)
Approximate mg/L in water.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many parts per million water are in 1 milligram per fluid ounce?
1 milligram per fluid ounce equals 33.8140227 parts per million water, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per fluid ounce to parts per million water?
Multiply the milligram per fluid ounce value by 33.8140227. The converter above does this instantly to whatever precision you set.
How do I convert parts per million water back to milligram per fluid ounce?
Use the reverse factor: 1 parts per million water equals 0.0295735296 milligrams per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram per fluid ounce?
Milligram per Fluid ounce (mg/fl oz) is a unit of chemistry.
What is a parts per million water?
Parts per million water (ppm) is a unit of chemistry.
Is the milligram per fluid ounce to parts per million water conversion exact?
Yes. Both milligram per fluid ounce and parts per million water are defined by fixed standards rather than physical artifacts, so the factor of 33.8140227 used above is exact to as many digits as you choose to display.
What's the difference between mass concentration and molarity?
Mass concentration expresses how much mass of a substance is present per unit volume (for example, grams per liter). Molarity expresses the amount in moles per liter instead, which accounts for the substance's molecular weight. This category converts mass-concentration units.