mmol to pg Converter
To convert mmol to pg, multiply the value in millimoles by the molecular weight (g/mol), then multiply by 1,000,000,000.
How to Convert mmol to pg
Use this mmol to pg converter to change millimoles into picograms. Enter mmol and the molecular weight.
mmol × MW gives milligrams. One milligram is 109 picograms, so pg = mmol × MW × 109.
For example, 1 × 10−9 mmol (1 pmol) of cholesterol (MW 386.664 g/mol) is 386.664 pg.
pg = mmol × MW × 1,000,000,000Multiply the millimoles by the molecular weight (g/mol), then multiply by 1,000,000,000 (10⁹) to get picograms.Conversion Formula
The formula to convert mmol to pg is:
Where:
- mmol = amount in millimoles (10⁻³ mol)
- pg = mass in picograms (10⁻¹² g)
- MW = molecular weight (molar mass) in g/mol
Conversion Table
Common mmol to pg conversions are shown below. The last column uses cholesterol (MW 386.664 g/mol) as an example.
| mmol | pg (formula) | pg for cholesterol |
|---|---|---|
| 0.01 | 10,000,000 × MW | 3,866,640,000 |
| 0.1 | 100,000,000 × MW | 38,666,400,000 |
| 0.33 | 330,000,000 × MW | 127,599,120,000 |
| 0.5 | 500,000,000 × MW | 193,332,000,000 |
| 1 | 1,000,000,000 × MW | 386,664,000,000 |
| 2.5 | 2,500,000,000 × MW | 966,660,000,000 |
| 5 | 5,000,000,000 × MW | 1.93332 × 10¹² |
| 10 | 10,000,000,000 × MW | 3.86664 × 10¹² |
| 33 | 33,000,000,000 × MW | 1.2759912 × 10¹³ |
| 50 | 50,000,000,000 × MW | 1.93332 × 10¹³ |
| 100 | 100,000,000,000 × MW | 3.86664 × 10¹³ |
| 250 | 250,000,000,000 × MW | 9.6666 × 10¹³ |
| 500 | 500,000,000,000 × MW | 1.93332 × 10¹⁴ |
| 1,000 | 1 × 10¹² × MW | 3.86664 × 10¹⁴ |
Worked Examples
Here are some common examples of mmol to pg conversion, using cholesterol (MW 386.664 g/mol):
- 386,664,000,000 pg = 1 mmol
- 1.93332 × 10¹² pg = 5 mmol
- 1.2759912 × 10¹³ pg = 33 mmol
- 3.86664 × 10¹³ pg = 100 mmol
Unit Definitions
What is a millimole (mmol)?
A millimole (mmol) is a unit of amount of substance equal to 10⁻³ mole.
The prefix milli- (m) means 10⁻³, or one thousandth. So 1 mmol = 0.001 mol.
What is a picogram (pg)?
A picogram (pg) is a unit of mass equal to 10⁻¹² gram.
The prefix pico- (p) means 10⁻¹², or one trillionth. So 1 pg = 0.000000000001 g.
Why Is Molecular Weight Needed?
Moles count particles. Grams measure mass. One particle of each substance has its own mass, so the link between them is the molecular weight (MW), also called molar mass.
MW tells you how many grams one mole of a substance weighs. For example, one mole of water weighs about 18.015 g, while one mole of glucose weighs about 180.16 g.
Therefore, to convert mmol to pg, you multiply by MW, then multiply by 1,000,000,000. The extra step (× 1,000,000,000) only adjusts for the different sizes of the two units.
Uses and Importance of mmol and pg
This conversion spans nine powers of ten. It is used mainly to plan dilutions from a millimole stock down to picogram standards.
Ultra-trace standards
Very sensitive instruments are calibrated with picogram amounts made from a much larger stock.
Lipid research
Sterols such as cholesterol are measured across a very wide range, from mmol in blood to pg in small tissue samples.
Teaching scale
It shows students how many picograms fit into a single millimole.
Frequently Asked Questions (FAQ)
How many pg are in 1 mmol of cholesterol?
1 × 386.664 × 109 ≈ 3.867 × 1011 pg, or about 387 mg.
How is cholesterol reported in blood tests?
In mg/dL or mmol/L. Labcorp lists a factor of 0.0259 to convert cholesterol from mg/dL to mmol/L.
Why is the number so large?
A picogram is 10−12 g, while a millimole of cholesterol weighs hundreds of milligrams.
Can I prepare picogram amounts by weighing?
No. They are prepared by serial dilution of a solution with a known concentration.
How much does a rounded molecular weight matter at pg scale?
For picogram work, use the most precise value you have. Small MW differences matter less than dilution errors.
Other Related Tools
Accuracy and Scope
The result depends on the molecular weight you enter.
This tool does not interpret cholesterol results.
Sources