µmol to pg Converter
To convert µmol to pg, multiply the value in micromoles by the molecular weight (g/mol), then multiply by 1,000,000.
How to Convert µmol to pg
Use this µmol to pg converter to change micromoles into picograms. Enter µmol and the molecular weight.
µmol × MW gives micrograms. One microgram is 1,000,000 picograms, so pg = µmol × MW × 1,000,000.
For example, 0.00001 µmol of urea (MW 60.056 g/mol) is 0.00001 × 60.056 × 1,000,000 = 600.56 pg.
pg = µmol × MW × 1,000,000Multiply the micromoles by the molecular weight (g/mol), then multiply by 1,000,000 to get picograms.Conversion Formula
The formula to convert µmol to pg is:
Where:
- µmol = amount in micromoles (10⁻⁶ mol)
- pg = mass in picograms (10⁻¹² g)
- MW = molecular weight (molar mass) in g/mol
Conversion Table
Common µmol to pg conversions are shown below. The last column uses urea (MW 60.056 g/mol) as an example.
| µmol | pg (formula) | pg for urea |
|---|---|---|
| 0.01 | 10,000 × MW | 600,560 |
| 0.1 | 100,000 × MW | 6,005,600 |
| 0.33 | 330,000 × MW | 19,818,480 |
| 0.5 | 500,000 × MW | 30,028,000 |
| 1 | 1,000,000 × MW | 60,056,000 |
| 2.5 | 2,500,000 × MW | 150,140,000 |
| 5 | 5,000,000 × MW | 300,280,000 |
| 10 | 10,000,000 × MW | 600,560,000 |
| 33 | 33,000,000 × MW | 1,981,848,000 |
| 50 | 50,000,000 × MW | 3,002,800,000 |
| 100 | 100,000,000 × MW | 6,005,600,000 |
| 250 | 250,000,000 × MW | 15,014,000,000 |
| 500 | 500,000,000 × MW | 30,028,000,000 |
| 1,000 | 1,000,000,000 × MW | 60,056,000,000 |
Worked Examples
Here are some common examples of µmol to pg conversion, using urea (MW 60.056 g/mol):
- 60,056,000 pg = 1 µmol
- 300,280,000 pg = 5 µmol
- 1,981,848,000 pg = 33 µmol
- 6,005,600,000 pg = 100 µmol
Unit Definitions
What is a micromole (µmol)?
A micromole (µmol) is a unit of amount of substance equal to 10⁻⁶ mole.
The prefix micro- (µ) means 10⁻⁶, or one millionth. So 1 µmol = 0.000001 mol.
It is often typed as “umol” when the µ symbol is not available.
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 µmol to pg, you multiply by MW, then multiply by 1,000,000. The extra step (× 1,000,000) only adjusts for the different sizes of the two units.
Uses and Importance of µmol and pg
This conversion bridges micromole stocks and the picogram amounts used by very sensitive detectors.
Detector calibration
Detectors with picogram sensitivity are tested with standards prepared from µmol stocks.
Isotope tracer studies
Tracer masses are often tiny. Converting from µmol gives the picogram amount.
Teaching
It shows how the mass unit grows when the amount unit shrinks.
Frequently Asked Questions (FAQ)
How many pg are in 1 µmol of urea?
1 × 60.056 × 1,000,000 = 60,056,000 pg, which is about 60 µg.
Why a factor of 1,000,000?
µmol × MW gives µg, and 1 µg = 1,000,000 pg.
Is urea a good example for tiny amounts?
It is a simple, well-known molecule. The same rule works for any substance.
How is the molecular weight of urea worked out?
Add the atomic weights in CH₄N₂O: 1 C + 4 H + 2 N + 1 O, which gives about 60.056 g/mol.
Can I prepare picogram amounts directly?
Not by weighing. They are made by diluting a known solution.
Other Related Tools
Accuracy and Scope
The result depends on the molecular weight you enter.
Real picogram samples are affected by dilution error and surface losses.
Sources