Nanograms to Femtograms Converter
Enter the weight in nanograms below to convert it to femtograms.
Convert Nanograms to Femtograms
Enter a value in nanograms (ng) to convert to femtograms (fg).
Nanogram to Femtogram Conversion Table
Table showing various nanogram measurements converted to femtograms. Click any preset value or arrow to load it into the converter.
How to Convert Nanograms to Femtograms
To convert nanograms to femtograms, multiply the weight by the following conversion ratio: 1,000,000 femtograms/nanogram.
Since one nanogram is equal to 1,000,000 femtograms, you can use this simple formula to convert:
The weight in femtograms is equal to the weight in nanograms multiplied by 1,000,000.
For example, here's how to convert 5 nanograms to femtograms using the formula above.
How Many Femtograms Are in a Nanogram?
There are 1,000,000 femtograms in a nanogram, which is why we use this value in the formula above.
Our nanogram to femtogram calculator automatically converts your weight measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Nanograms and femtograms are both units used to measure weight. Keep reading to learn more about each unit.
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). [1]
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.
What Is a Femtogram?
A femtogram is a unit of weight equal to 1/999,999,999,999,999,900 of a kilogram (1e-18 kg). 10⁻¹⁸ kilograms. [2]
The femtogram is classified as a metric and SI-compatible unit of weight. Femtograms can be abbreviated as fg; for example, 1 femtogram can be written as 1 fg.
In the metric system, "femto" is the standard SI prefix for quadrillionths, or 10⁻¹⁵. This makes the femtogram (fg) a convenient decimal multiple of the gram (g).
In practice, femtograms (fg) 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 nanograms (ng) and femtograms (fg), keep full floating-point precision (1 ng = 1,000,000 fg; 1 fg = 0.000001 ng) during intermediate calculations and round only the final femtogram figure to match your instrument tolerance.
More Nanogram & Femtogram Conversions
Need to calculate in the opposite direction? Use our femtograms to nanograms calculator to switch your starting unit immediately. You can also explore related tools such as converting femtograms to nanograms, converting kilograms to pounds, or converting pounds to kilograms.
Convert from Nanograms
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Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Mass)·Mass & Weight Metrology Standard — Nanograms (ng) to Femtograms (fg)
- [2]NIST HB 44 SpecificationNIST HB 44 (NIST Handbook 44 (Current Ed.))·Unit Specifications: Nanogram (ng) & Femtogram (fg)
- [3]BIPM ReferenceBIPM (SI Base Unit: Kilogram (kg))·Conversion Factors & Mathematical Basis (ng to fg)