20 Micrometer to Astronomical Unit
Quick answer
20 Micrometer (µm) equals
1.336917e-16 AU
To convert 20 Micrometers to Astronomical Units, multiply by 6.684587e-18. Therefore, 20 Micrometer (µm) equals 1.336917e-16 Astronomical Unit (AU).
Formula: AU = µm × 6.684587e-18. Calculation: 20 × 6.684587e-18 = 1.336917e-16 AU.
Convert Micrometer (µm) to Astronomical Unit (AU) online with our free unit converter. In length, 1 µm = 6.684587e-18 AU. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Micrometer to Astronomical Unit
- Step 1 — start with the formula. AU = µm × 6.684587e-18
- Step 2 — substitute your figure. 20 µm × 6.684587e-18
- Step 3 — read the result. 20 µm = 1.336917e-16 AU
- Step 4 — check it in reverse. µm = AU × 1.495979e+17 returns 20 µm, which matches the figure you started with.
Length Converter
31 units available
20 µm = 1.336917e-16 AU
Formula:
AU = µm × 6.684587e-18With your value: 20 µm = 1.336917e-16 AU
How big is that?
Everyday references on a logarithmic scale, all expressed in micrometer so you can sanity-check the result.
Other Micrometer to Astronomical Unit conversions
Micrometer to Astronomical Unit Conversion Table
| Micrometer (µm) | Astronomical Unit (AU) |
|---|---|
| 0.5 | 3.342294e-18 |
| 1 | 6.684587e-18 |
| 2 | 1.336917e-17 |
| 5 | 3.342294e-17 |
| 10 | 6.684587e-17 |
| 15 | 1.002688e-16 |
| 20 | 1.336917e-16 |
| 25 | 1.671147e-16 |
| 50 | 3.342294e-16 |
| 100 | 6.684587e-16 |
| 250 | 1.671147e-15 |
| 500 | 3.342294e-15 |
| 1000 | 6.684587e-15 |
Astronomical Unit to Micrometer Conversion Table
| Astronomical Unit (AU) | Micrometer (µm) |
|---|---|
| 0.5 | 7.479894e+16 |
| 1 | 1.495979e+17 |
| 2 | 2.991957e+17 |
| 5 | 7.479894e+17 |
| 10 | 1.495979e+18 |
| 15 | 2.243968e+18 |
| 20 | 2.991957e+18 |
| 25 | 3.739947e+18 |
| 50 | 7.479894e+18 |
| 100 | 1.495979e+19 |
| 250 | 3.739947e+19 |
| 500 | 7.479894e+19 |
| 1000 | 1.495979e+20 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Micrometer (µm)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Astronomical Unit (AU)
Length
The astronomical unit is exactly 149 597 870 700 m (IAU Resolution B2, 2012).
Source: IAU Resolution B2 (2012) — definition of the astronomical unit; IAU B2 (2015) nominal values
International Astronomical Union · Reviewed 2026-07-01
How to Convert Micrometer to Astronomical Unit
To convert from Micrometer (µm) to Astronomical Unit (AU), multiply the value by 6.684587e-18.
Formula: AU = µm × 6.684587e-18
Reverse: µm = AU × 1.495979e+17
Step-by-Step Example
- Start with your value in Micrometer. For example: 5 µm
- Multiply by the conversion factor: 5 x 6.684587e-18
- The result is: 3.342294e-17 AU
Micrometer and Astronomical Unit Relationship
This conversion bridges the Metric (SI) and Astronomical measurement systems, commonly required when translating scientific data, international engineering specifications, or trade standards. Since 1 Micrometer represents a fraction of a Astronomical Unit (1 Astronomical Unit ≈ 1.496e+17 Micrometers), the Astronomical Unit is the larger measurement interval. Understanding the relationship between Micrometer and Astronomical Unit is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Micrometer
The micrometre (micron) equals one millionth of a metre. It is the working scale of cells, machining tolerances and airborne particulates.
Common uses of Micrometer: microscopy, machining tolerances, air quality (PM).
About Astronomical Unit
The astronomical unit (AU) is defined as exactly 149,597,870,700 metres, close to the mean Earth–Sun distance. It is the natural yardstick for the Solar System.
Common uses of Astronomical Unit: planetary science, orbital mechanics, astronomy.
Frequently Asked Questions
- What is 20 Micrometer in Astronomical Unit?
- 20 Micrometer equals 1.336917e-16 Astronomical Unit.
- How many Astronomical Units are in 1 Micrometer?
- There are exactly 6.684587e-18 Astronomical Units in 1 Micrometer. This means the conversion factor from Micrometer to Astronomical Unit is 6.684587e-18.
- What is the formula to convert Micrometer to Astronomical Unit?
- The formula to convert Micrometer to Astronomical Unit is: AU = µm × 6.684587e-18. For example, to convert 10 Micrometers to Astronomical Units, you would multiply 10 by 6.684587e-18.
- What is a Micrometer?
- The micrometre (micron) equals one millionth of a metre. It is the working scale of cells, machining tolerances and airborne particulates.
- What is a Astronomical Unit?
- The astronomical unit (AU) is defined as exactly 149,597,870,700 metres, close to the mean Earth–Sun distance. It is the natural yardstick for the Solar System.
- What are the common uses of Micrometer?
- The Micrometer is commonly used in microscopy, machining tolerances, air quality (PM).
Related Length Conversions
Cite this page
UnitConvertLab. (2026). 20 Micrometer to Astronomical Unit. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/20-micrometer-to-astronomical_unit