Milligrams to Nanograms Converter
Enter the weight in milligrams below to convert it to nanograms.
Convert Milligrams to Nanograms
Enter a value in milligrams (mg) to convert to nanograms (ng).
Milligram to Nanogram Conversion Table
Table showing various milligram measurements converted to nanograms. Click any preset value or arrow to load it into the converter.
How to Convert Milligrams to Nanograms
To convert milligrams to nanograms, multiply the weight by the following conversion ratio: 1,000,000 nanograms/milligram.
Since one milligram is equal to 1,000,000 nanograms, you can use this simple formula to convert:
The weight in nanograms is equal to the weight in milligrams multiplied by 1,000,000.
For example, here's how to convert 5 milligrams to nanograms using the formula above.
How Many Nanograms Are in a Milligram?
There are 1,000,000 nanograms in a milligram, which is why we use this value in the formula above.
Our milligram to nanogram calculator automatically converts your weight measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Milligrams and nanograms are both units used to measure weight. Keep reading to learn more about each unit.
What Is a Milligram?
A milligram is a unit of weight equal to 1/1,000,000 of a kilogram (0.000001 kg). One-thousandth of a gram (10⁻⁶ kg). [1]
The milligram is classified as a metric and SI-compatible unit of weight. Milligrams can be abbreviated as mg; for example, 1 milligram can be written as 1 mg.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the milligram (mg) a convenient decimal multiple of the gram (g).
In practice, milligrams (mg) are widely used across fine-tolerance laboratory, analytical, and micro-scale weight measurements within SI metric workflows, engineering documentation, and technical data sheets.
What Is a Nanogram?
A nanogram is a unit of weight equal to 1/1,000,000,000,000 of a kilogram (1e-12 kg). One-billionth of a gram (10⁻¹² kg). [2]
The nanogram is classified as a metric and SI-compatible unit of weight. Nanograms can be abbreviated as ng; for example, 1 nanogram can be written as 1 ng.
In the metric system, "nano" is the standard SI prefix for billionths, or 10⁻⁹. This makes the nanogram (ng) a convenient decimal multiple of the gram (g).
In practice, nanograms (ng) are widely used across fine-tolerance laboratory, analytical, and micro-scale weight measurements within SI metric workflows, engineering documentation, and technical data sheets.
When converting weight between milligrams (mg) and nanograms (ng), keep full floating-point precision (1 mg = 1,000,000 ng; 1 ng = 0.000001 mg) during intermediate calculations and round only the final nanogram figure to match your instrument tolerance.
More Milligram & Nanogram Conversions
Need to calculate in the opposite direction? Use our nanograms to milligrams calculator to switch your starting unit immediately. You can also explore related tools such as converting nanograms to milligrams, converting milligrams to grams, or converting milligrams to micrograms.
Convert from Milligrams
Weight and volume require ingredient density (g/mL). Choose a USDA FoodData Central verified ingredient below:
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Mass)·Mass & Weight Metrology Standard — Milligrams (mg) to Nanograms (ng)
- [2]NIST HB 44 SpecificationNIST HB 44 (NIST Handbook 44 (Current Ed.))·Unit Specifications: Milligram (mg) & Nanogram (ng)
- [3]BIPM ReferenceBIPM (SI Base Unit: Kilogram (kg))·Conversion Factors & Mathematical Basis (mg to ng)