Mass per volume density.
Micrograms per Fluid ounce to Kilograms per Milliliter Converter — ug/fl oz to kg/mL
Convert Microgram per Fluid ounce (ug/fl oz) to Kilogram per Milliliter (kg/mL) using the exact conversion factor (1 microgram per fluid ounce = 3.381402e-11 kilogram per milliliter). See the formula, worked examples, and conversion table.
Micrograms per Fluid ounce to Kilograms per Milliliter converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 3.38140227e-5 / 1e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micrograms per Fluid ounce to Kilograms per Milliliter
Microgram per Fluid ounce and Kilogram per Milliliter both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
kilograms per milliliter = micrograms per fluid ounce × 3.381402e-11
This factor comes from each unit's defined relationship to the category's base unit: 1 microgram per fluid ounce equals 0.0000338140227018 base units, and 1 kilogram per milliliter equals 1000000 base units, so dividing one by the other gives the direct microgram per fluid ounce-to-kilogram per milliliter factor of 3.381402e-11.
Simple example
1 ug/fl oz × 3.381402e-11 = 3.381402e-11 kg/mL
1 microgram per fluid ounce = 3.381402e-11 kilograms per milliliter.
Real-world example
1,000 ug/fl oz × 3.381402e-11 = 3.381402e-8 kg/mL
1,000 micrograms per fluid ounce = 3.381402e-8 kilograms per milliliter.
Conversion table
| Microgram per Fluid ounce (ug/fl oz) | Kilogram per Milliliter (kg/mL) |
|---|---|
| 0.1 ug/fl oz | 3.381402e-12 kg/mL |
| 1 ug/fl oz | 3.381402e-11 kg/mL |
| 10 ug/fl oz | 3.381402e-10 kg/mL |
| 100 ug/fl oz | 3.381402e-9 kg/mL |
| 1,000 ug/fl oz | 3.381402e-8 kg/mL |
| 10,000 ug/fl oz | 3.381402e-7 kg/mL |
Reverse conversion: Kilogram per Milliliter to Microgram per Fluid ounce
3.381402e-11 kg/mL × 29573529560 = 0.9999999201 ug/fl oz
3.381402e-11 kilograms per milliliter = 0.9999999201 micrograms per fluid ounce.
micrograms per fluid ounce = kilograms per milliliter × 29573529562.5
For a page dedicated to this direction, see Kilogram per Milliliter to Microgram per Fluid ounce.
Understanding the Microgram per Fluid ounce (ug/fl oz)
Mass per volume density.
Understanding the Kilogram per Milliliter (kg/mL)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per milliliter are in 1 microgram per fluid ounce?
1 microgram per fluid ounce equals 3.381402e-11 kilograms per milliliter, using the exact defined conversion factor rather than an estimate.
How do I convert microgram per fluid ounce to kilogram per milliliter?
Multiply the microgram per fluid ounce value by 3.381402e-11. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per milliliter back to microgram per fluid ounce?
Use the reverse factor: 1 kilogram per milliliter equals 29,573,529,560 micrograms per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a microgram per fluid ounce?
Microgram per Fluid ounce (ug/fl oz) is a unit of density.
What is a kilogram per milliliter?
Kilogram per Milliliter (kg/mL) is a unit of density.
Is the microgram per fluid ounce to kilogram per milliliter conversion exact?
Yes. Both microgram per fluid ounce and kilogram per milliliter are defined by fixed standards rather than physical artifacts, so the factor of 3.381402e-11 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.