Astronomical Unit to Fermi Converter

Length Converter

31 units available

Decimals:

From

To

1.495979e+26

1 AU = 1.495979e+26 fm

Formula:

fm = AU × 1.495979e+26

With your value: 1 AU = 1.495979e+26 fm

How big is that?

Everyday references on a logarithmic scale, all expressed in astronomical unit so you can sanity-check the result.

Olympic pool (1/3.0e+9 your value)3.34e-10 AU

Football pitch (length) (1/1.4e+9 your value)7.02e-10 AU

Eiffel Tower (1/4.5e+8 your value)2.21e-9 AU

Burj Khalifa (1/1.8e+8 your value)5.53e-9 AU

Marathon (1/3.5e+6 your value)2.82e-7 AU

Your value1.00 AU

Other Astronomical Unit to Fermi conversions

2 AU to fm 3 AU to fm 4 AU to fm 5 AU to fm 6 AU to fm 7 AU to fm 8 AU to fm

Astronomical Unit to Fermi Conversion Table

Astronomical Unit (AU)	Fermi (fm)
0.5	7.479894e+25
1	1.495979e+26
2	2.991957e+26
5	7.479894e+26
10	1.495979e+27
15	2.243968e+27
20	2.991957e+27
25	3.739947e+27
50	7.479894e+27
100	1.495979e+28
250	3.739947e+28
500	7.479894e+28
1000	1.495979e+29

Fermi to Astronomical Unit Conversion Table

Fermi (fm)	Astronomical Unit (AU)
0.5	3.342294e-27
1	6.684587e-27
2	1.336917e-26
5	3.342294e-26
10	6.684587e-26
15	1.002688e-25
20	1.336917e-25
25	1.671147e-25
50	3.342294e-25
100	6.684587e-25
250	1.671147e-24
500	3.342294e-24
1000	6.684587e-24

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.

Astronomical Unit (AU)

Length

Exact conversion

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

Fermi (fm)

Length

Exact conversion

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

How to Convert Astronomical Unit to Fermi

To convert from Astronomical Unit (AU) to Fermi (fm), multiply the value by 1.495979e+26.

Formula: fm = AU × 1.495979e+26

Reverse: AU = fm × 6.684587e-27

Step-by-Step Example

Start with your value in Astronomical Unit. For example: 5 AU
Multiply by the conversion factor: 5 x 1.495979e+26
The result is: 7.479894e+26 fm

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: planetary science, orbital mechanics, astronomy.

About Fermi

The fermi (fm) is a unit of distance and length. One fermi equals 1.000000 × 10^-15 metres. UnitConvertLab converts it against every other length unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: length calculations, engineering and science, education.

Frequently Asked Questions

How many Fermi are in 1 Astronomical Unit?

There are exactly 1.495979e+26 Fermi in 1 Astronomical Unit. This means the conversion factor from Astronomical Unit to Fermi is 1.495979e+26.

What is the formula to convert Astronomical Unit to Fermi?

The formula to convert Astronomical Unit to Fermi is: fm = AU × 1.495979e+26. For example, to convert 10 Astronomical Unit to Fermi, you would multiply 10 by 1.495979e+26.

What is a Astronomical Unit?