Description
Require perMille in [0, 1000] and divide by 1000 for massFraction.
A unit conversion applies a defined or supplied factor to a quantity of the same physical kind. Similar unit names can have different definitions, while fraction scales depend on whether the basis is mass, amount of substance, or volume.
Require perMille in [0, 1000] and divide by 1000 for massFraction.
When to use this tool
Use Per Mille To Mass Fraction when you need a transparent conversion under the explicitly stated unit definition and quantity basis.
How to use the tool and how it works
- Enter perMille. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read massFraction. Use the output convention below.
Require perMille in [0, 1000] and divide by 1000 for massFraction.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| perMille | Per Mille | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| massFraction | Mass Fraction | Required. Finite number. |
{
"input": {
"perMille": 25
},
"output": {
"massFraction": 0.025
}
}Limitations and assumptions
- The value is parts per thousand on a mass basis; no density conversion, chemical identity, or formulation suitability is checked.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Verify the original definition, quantity type, and measurement uncertainty before combining the result with other data.
References
Similar or alternative tools
- Parts Per Hundred To Parts Per Thousand
Multiply partsPerHundred by ten for partsPerThousand.
- ppb Mole To Nmol Per Mol
Require moleFractionPpb from zero through 10^9 and return the same numeric value as nanomolesPerMole.