Convert Milligram to Nanogram
Convert milligrams to nanograms instantly. 1 milligram = 1000000 nanogram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Nanogram to Milligram converter for the reverse conversion.
Units explained
Milligram
A milligram (mg) equals one-millionth of a kilogram, or 0.001 gram.
From the SI prefix 'milli-' (from Latin 'mille', thousand).
Standard for medicine dosing, nutrition labels, and fine jewelry.
Part of the original metric system of 1795.
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.
Milligram to Nanogram conversion formula
The relationship between milligrams and nanograms:
To convert milligrams to nanograms, multiply the value in milligrams by 1000000. To reverse, multiply nanograms by 1e-6.
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 Milligram converter for the reverse direction.
Step-by-step: convert milligrams to nanograms
- Write down the value in milligrams (mg).
- Multiply that value by the factor 1000000.
- The product is the equivalent value in nanograms (ng).
- To reverse, multiply the nanogram value by 1e-6.
Worked examples
Example 1 — Convert 1 mg to ng:
1 × 1000000 = 1000000 ng
Example 2 — Convert 100 mg to ng:
100 × 1000000 = 1e+8 ng
Real-world example — Mid-micron to nanometer
3 milligrams equals 3,000 nanograms — useful when relating mid-infrared wavelengths (typically quoted in microns) to nanometer-scale visible-light wavelength tables.
3 mg × 1000000 = 3000000 ng
Real-world example — From microns to sub-micron features
One milligram equals one thousand nanograms — the conversion semiconductor designers do constantly when comparing mask feature dimensions to actual transistor gate lengths.
1 mg × 1000000 = 1000000 ng
Real-world example — Infrared to visible-spectrum mapping
A 10-milligram thermal infrared wavelength corresponds to a much larger number in nanograms, the unit favoured for ultraviolet and visible-light specifications.
10 mg × 1000000 = 1e+7 ng
Milligram to Nanogram conversion table
Standard reference values for converting milligrams to nanograms:
| Milligram [mg] | Nanogram [ng] |
|---|---|
| 0.01 | 10000 |
| 0.1 | 100000 |
| 1 | 1000000 |
| 2 | 2000000 |
| 3 | 3000000 |
| 4 | 4000000 |
| 5 | 5000000 |
| 10 | 1e+7 |
| 20 | 2e+7 |
| 30 | 3e+7 |
| 40 | 4e+7 |
| 50 | 5e+7 |
| 100 | 1e+8 |
| 500 | 5e+8 |
| 1000 | 1e+9 |
Frequently asked questions
How many nanograms is 1 milligram?
How do I convert milligrams to nanograms?
How do I convert nanograms back to milligrams?
How many nanograms is 100 milligrams?
Popular weight unit conversions
Convert Milligram to other weight units
Show all Milligram 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 mg = 1000000 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.