Convert Attogram to Nanogram
Convert attograms to nanograms instantly. 1 attogram = 1e-9 nanogram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Nanogram to Attogram converter for the reverse conversion.
Units explained
Attogram
An attogram (ag) equals 10^-21 kilogram.
From the SI prefix 'atto-' (from Danish 'atten', eighteen).
Frontier nanoscience and single-molecule mass detection.
The atto- prefix was adopted by the CGPM in 1975.
Nanogram
A nanogram (ng) equals 10^-12 kilogram.
From the SI prefix 'nano-' (from Greek 'nanos', dwarf).
Molecular biology, forensics, and toxicology.
The nano- prefix entered the SI in 1960.
Attogram to Nanogram conversion formula
The relationship between attograms and nanograms:
To convert attograms to nanograms, multiply the value in attograms by 1e-9. To reverse, multiply nanograms by 1e+9.
How to use this converter
Type a value into the calculator. The result in nanograms updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Nanogram to Attogram converter for the reverse direction.
Step-by-step: convert attograms to nanograms
- Write down the value in attograms (ag).
- Multiply that value by the factor 1e-9.
- The product is the equivalent value in nanograms (ng).
- To reverse, multiply the nanogram value by 1e+9.
Worked examples
Example 1 — Convert 1 ag to ng:
1 × 1e-9 = 1e-9 ng
Example 2 — Convert 100 ag to ng:
100 × 1e-9 = 1e-7 ng
Real-world example — Molecular dimensions
The diameter of small molecular structures (around 2 attograms) is often converted into related sub-micron units when comparing measurements across different microscopy techniques or imaging modalities.
2 ag × 1e-9 = 2e-9 ng
Real-world example — Wavelengths across the spectrum
Optical and atomic-scale phenomena are routinely cross-converted between sub-micron units. A photon of wavelength 800 attograms can be re-expressed in nanograms for direct comparison with another instrument's calibration data sheet.
800 ag × 1e-9 = 8e-7 ng
Attogram to Nanogram conversion table
Standard reference values for converting attograms to nanograms:
| Attogram [ag] | Nanogram [ng] |
|---|---|
| 0.01 | 1e-11 |
| 0.1 | 1e-10 |
| 1 | 1e-9 |
| 2 | 2e-9 |
| 3 | 3e-9 |
| 4 | 4e-9 |
| 5 | 5e-9 |
| 10 | 1e-8 |
| 20 | 2e-8 |
| 30 | 3e-8 |
| 40 | 4e-8 |
| 50 | 5e-8 |
| 100 | 1e-7 |
| 500 | 5e-7 |
| 1000 | 1e-6 |
Frequently asked questions
How many nanograms is 1 attogram?
How do I convert attograms to nanograms?
How do I convert nanograms back to attograms?
How many nanograms is 100 attograms?
Popular weight unit conversions
Convert Attogram to other weight units
Show all Attogram conversions
Metric / SI (17 units)
Avoirdupois (15 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 ag = 1e-9 ng) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.