Carats to Nanograms Converter
Enter the weight in carats below to convert it to nanograms.
Convert Carats to Nanograms
Enter a value in carats (ct) to convert to nanograms (ng).
Metric Carat to Nanogram Conversion Table
Table showing various metric carat measurements converted to nanograms. Click any preset value or arrow to load it into the converter.
How to Convert Carats to Nanograms
To convert carats to nanograms, multiply the weight by the following conversion ratio: 200,000,000 nanograms/metric carat.
Since one metric carat is equal to 200,000,000 nanograms, you can use this simple formula to convert:
The weight in nanograms is equal to the weight in carats multiplied by 200,000,000.
For example, here's how to convert 5 carats to nanograms using the formula above.
How Many Nanograms Are in a Metric Carat?
There are 200,000,000 nanograms in a metric carat, which is why we use this value in the formula above.
Our metric carat to nanogram calculator automatically converts your weight measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Carats and nanograms are both units used to measure weight. Keep reading to learn more about each unit.
What Is a Metric Carat?
A metric carat is a unit of weight equal to 1/5,000 of a kilogram (0.0002 kg). Gemstone mass unit equal to 0.2 grams (200 mg). [1]
The metric carat is classified as a metric and SI-compatible unit of weight. Carats can be abbreviated as ct; for example, 1 metric carat can be written as 1 ct.
When working with carats (ct) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, carats (ct) 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 carats (ct) and nanograms (ng), keep full floating-point precision (1 ct = 200,000,000 ng; 1 ng = 5e-9 ct) during intermediate calculations and round only the final nanogram figure to match your instrument tolerance.
More Carat & Nanogram Conversions
Need to calculate in the opposite direction? Use our nanograms to carats calculator to switch your starting unit immediately. You can also explore related tools such as converting nanograms to carats, converting carats to grams, or converting kilograms to pounds.
Convert from Carats
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 — Carats (ct) to Nanograms (ng)
- [2]NIST HB 44 SpecificationNIST HB 44 (NIST Handbook 44 (Current Ed.))·Unit Specifications: Metric Carat (ct) & Nanogram (ng)
- [3]BIPM ReferenceBIPM (SI Base Unit: Kilogram (kg))·Conversion Factors & Mathematical Basis (ct to ng)