µmol/L to pmol/L Converter
To convert µmol/L to pmol/L, multiply the value in micromoles per liter by 1,000,000.
How to Convert µmol/L to pmol/L
Use this µmol/L to pmol/L converter to change micromoles per liter into picomoles per liter. Enter µmol/L and read pmol/L.
Both units are per liter. Micro- is 10−6 and pico- is 10−12, so multiply by 1,000,000.
For example, 0.00002 µmol/L × 1,000,000 = 20 pmol/L.
1 µmol/L = 1,000,000 pmol/LMultiply the value in µmol/L by 1,000,000 to get pmol/L.Conversion Formula
The formula to convert µmol/L to pmol/L is:
Where:
- µmol/L = concentration in micromoles per liter
- pmol/L = concentration in picomoles per liter
Conversion Table
Common µmol/L to pmol/L conversions are shown below:
| µmol/L | pmol/L |
|---|---|
| 0.01 | 10,000 |
| 0.1 | 100,000 |
| 0.33 | 330,000 |
| 0.5 | 500,000 |
| 1 | 1,000,000 |
| 2.5 | 2,500,000 |
| 5 | 5,000,000 |
| 10 | 10,000,000 |
| 33 | 33,000,000 |
| 50 | 50,000,000 |
| 100 | 100,000,000 |
| 250 | 250,000,000 |
| 500 | 500,000,000 |
| 1,000 | 1,000,000,000 |
Worked Examples
Here are some common examples of µmol/L to pmol/L conversion:
- 1,000,000 pmol/L = 1 µmol/L
- 5,000,000 pmol/L = 5 µmol/L
- 33,000,000 pmol/L = 33 µmol/L
- 100,000,000 pmol/L = 100 µmol/L
Unit Definitions
What is micromoles per liter (µmol/L)?
Micromoles per liter (µmol/L) is a unit of molar concentration. It tells you how many micromoles of a substance are present in one liter of liquid.
It is also written as µM (micromolar). 1 µmol/L = 0.000001 mol/L.
What is picomoles per liter (pmol/L)?
Picomoles per liter (pmol/L) is a unit of molar concentration. It tells you how many picomoles of a substance are present in one liter of liquid.
It is also written as pM (picomolar). 1 pmol/L = 10−12 mol/L.
Why Is the Conversion Factor 1,000,000?
Both units are “per liter”, so the volume part is the same. Only the amount part changes. Micromole is 10⁻⁶ mole, while picomole is 10⁻¹² mole.
Therefore, 1 micromole per liter equals 1,000,000 picomoles per liter. To convert µmol/L to pmol/L, you multiply by 1,000,000, and to convert pmol/L to µmol/L, you divide by 1,000,000.
Uses and Importance of µmol/L and pmol/L
This conversion helps when a substance is known in µM but is measured or reported at picomolar levels.
Picomolar hormones
Estradiol and free T4 are reported in pmol/L in SI units. Converting a µmol/L figure shows it on the same scale.
High-affinity binders
Antibodies and some drugs bind at pM concentrations, while stocks are kept in µM.
Assay standards
Standard curves in immunoassays often run in pM, prepared from µM stocks.
Frequently Asked Questions (FAQ)
How many pmol/L are in 1 µmol/L?
1 µmol/L = 1,000,000 pmol/L.
What is 0.001 µM in pM?
0.001 × 1,000,000 = 1,000 pM.
How do I dilute a 1 µM stock to 100 pM?
1 µM is 1,000,000 pM. 1,000,000 ÷ 100 = 10,000, so you need a 10,000-fold dilution, usually in two steps of 100-fold.
Is this the same as µg/L to pg/mL?
No. Those are mass units. This page converts molar units only.
Why are antibody affinities quoted in pM?
Strong binders hold on at very low concentrations, so pM values are common.
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Accuracy and Scope
The factor 1 µmol/L = 106 pmol/L is exact.
It changes units only; it does not interpret test results.
Sources