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Length Converter
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Folate — nmol/L to ng/mL
Converts folate from nmol/L to ng/mL, the factor taken from its molar mass. One nmol/L is 0.441398 ng/mL.
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In short
To convert folate from nmol/L to ng/mL, multiply by 0.441398 — so one nmol/L is 0.441398 ng/mL, and one ng/mL is 2.26553 nmol/L. 4 ng/mL is 9.1 nmol/L; 10 ng/mL is 22.7 nmol/L; 20 ng/mL is 45.3 nmol/L. The factor comes from the molar mass, because folic acid has a molar mass of 441.4 g/mol; that is why it differs for every analyte and why a single "lab unit converter" factor does not exist. Serum folate and red cell folate are reported in the same units and convert with the same factor, but they are not interchangeable measurements — red cell folate reflects months of intake and serum folate reflects days. Converting the units correctly does not make the two figures comparable. This converts units. It does not interpret results, does not compare your value against a reference interval, and is not a substitute for the clinician who ordered the test — reference intervals differ between laboratories, methods and populations.
How to use the Folate — nmol/L to ng/mL
- Type the value you want to convert.
- Pick the unit you are converting from and the unit you want.
- The converted value and the exact conversion factor are shown instantly.
About the Folate — nmol/L to ng/mL
Serum folate and red cell folate are reported in the same units and convert with the same factor, but they are not interchangeable measurements — red cell folate reflects months of intake and serum folate reflects days. Converting the units correctly does not make the two figures comparable.
What people use it for
- Reading a folate result issued in nmol/L when you are used to ng/mL.
- Comparing an old report with a new one after moving country or changing laboratory.
- Following a study or a guideline written in the other unit system.
Details
| This conversion | 1 nmol/L = 0.441398 ng/mL |
|---|---|
| Conventional unit | ng/mL — ng/mL in the US; nmol/L in the UK, Europe, Canada and Australia. |
| Factor | 1 ng/mL = 2.26553 nmol/L (divide by 0.441398 to go back) |
| Where it comes from | Molar mass: folic acid has a molar mass of 441.4 g/mol |
| Worked examples | 4 ng/mL is 9.1 nmol/L; 10 ng/mL is 22.7 nmol/L; 20 ng/mL is 45.3 nmol/L |
| Privacy | The arithmetic runs in your browser. Nothing you type is sent anywhere or stored. |
The factor is printed on the page so the arithmetic can be checked rather than trusted. This converts units. It does not interpret results, does not compare your value against a reference interval, and is not a substitute for the clinician who ordered the test — reference intervals differ between laboratories, methods and populations.
Where this tool stops
This converts units. It does not interpret results, does not compare your value against a reference interval, and is not a substitute for the clinician who ordered the test — reference intervals differ between laboratories, methods and populations.
Frequently asked questions
Can I compare a serum folate result with a red cell folate result?
Not directly, even in the same units. Red cell folate values are several times higher because they measure stores accumulated over the life of the cell, while serum folate follows recent diet. The conversion factor is the same for both; the reference intervals are not.
What is the exact factor?
One nmol/L is 0.441398 ng/mL, and the reverse is 2.26553. It is derived rather than looked up: folic acid has a molar mass of 441.4 g/mol, and the conversion follows from that.
Does this tool tell me if my result is normal?
No. It converts a number between two units and stops there, on purpose. Reference intervals differ between laboratories and methods, and a single value means little without the rest of your results and the person who ordered them.
Does the Folate — nmol/L to ng/mL cost anything?
No charge and no sign-up. There is no free tier to run out of because there is no paid tier — inputtesthub.com is funded by advertising rather than by metering the utility.
Is the Folate — nmol/L to ng/mL safe to use with private information?
No. The Folate — nmol/L to ng/mL runs entirely in your browser using JavaScript. Because the work happens locally, the utility also keeps working if your connection drops, and closing the tab is all it takes to discard everything.
What problem does the Folate — nmol/L to ng/mL solve?
In practice it gets used for three things: reading a folate result issued in nmol/L when you are used to ng/mL. Comparing an old report with a new one after moving country or changing laboratory. Following a study or a guideline written in the other unit system. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
When is the Folate — nmol/L to ng/mL not the right tool?
This converts units. It does not interpret results, does not compare your value against a reference interval, and is not a substitute for the clinician who ordered the test — reference intervals differ between laboratories, methods and populations. Knowing where a tool stops being trustworthy matters more than the cases where it works.
Which values should I know?
This conversion is 1 nmol/L = 0.441398 ng/mL. Conventional unit is ng/mL — ng/mL in the US; nmol/L in the UK, Europe, Canada and Australia.. Factor is 1 ng/mL = 2.26553 nmol/L (divide by 0.441398 to go back). These are printed on the page itself, so you do not have to take them on trust.
Can I rely on this for exact work?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.
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