Astronomical Unit to Foot Converter
Quick answer
To convert Astronomical Units to feet, multiply by 490,806,662,401.5747 (or divide by 2.037462e-12). Therefore, 1 Astronomical Unit (AU) equals 490,806,662,401.57477 feet (ft).
Formula: ft = AU × 490,806,662,401.5747. Worked example: 10 AU = 4.908067e+12 ft.
Convert Astronomical Unit (AU) to Foot (ft) online with our free unit converter. In length, 1 AU = 490,806,662,401.57477 ft. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Astronomical Unit to Foot
- Step 1 — start with the formula. ft = AU × 4.908067e+11
- Step 2 — substitute your figure. 10 AU × 490,806,662,401.5747
- Step 3 — read the result. 10 AU = 4.908067e+12 ft
- Step 4 — check it in reverse. AU = ft × 2.037462e-12 returns 10 AU, which matches the figure you started with.
Length Converter
31 units available
1 AU = 490,806,662,401.57477 ft
Formula:
ft = AU × 4.908067e+11With your value: 1 AU = 490,806,662,401.57477 ft
How big is that?
Everyday references on a logarithmic scale, all expressed in astronomical unit so you can sanity-check the result.
Other Astronomical Unit to Foot conversions
Astronomical Unit to Foot Conversion Table
| Astronomical Unit (AU) | Foot (ft) |
|---|---|
| 0.5 | 245,403,331,200.78738 |
| 1 | 490,806,662,401.57477 |
| 2 | 981,613,324,803.1495 |
| 5 | 2.454033e+12 |
| 10 | 4.908067e+12 |
| 15 | 7.362100e+12 |
| 20 | 9.816133e+12 |
| 25 | 1.227017e+13 |
| 50 | 2.454033e+13 |
| 100 | 4.908067e+13 |
| 250 | 1.227017e+14 |
| 500 | 2.454033e+14 |
| 1000 | 4.908067e+14 |
Foot to Astronomical Unit Conversion Table
| Foot (ft) | Astronomical Unit (AU) |
|---|---|
| 0.5 | 1.018731e-12 |
| 1 | 2.037462e-12 |
| 2 | 4.074924e-12 |
| 5 | 1.018731e-11 |
| 10 | 2.037462e-11 |
| 15 | 3.056193e-11 |
| 20 | 4.074924e-11 |
| 25 | 5.093655e-11 |
| 50 | 1.018731e-10 |
| 100 | 2.037462e-10 |
| 250 | 5.093655e-10 |
| 500 | 1.018731e-9 |
| 1000 | 2.037462e-9 |
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
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
Foot (ft)
Length
1 foot = 0.3048 m exactly (international foot, 1959).
The US survey foot (1200/3937 m) was deprecated for new work on 31 December 2022 and differs by about 2 ppm.
Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442
US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01
How to Convert Astronomical Unit to Foot
To convert from Astronomical Unit (AU) to Foot (ft), multiply the value by 490,806,662,401.5747.
Formula: ft = AU × 4.908067e+11
Reverse: AU = ft × 2.037462e-12
Step-by-Step Example
- Start with your value in Astronomical Unit. For example: 5 AU
- Multiply by the conversion factor: 5 x 490,806,662,401.5747
- The result is: 2.454033e+12 ft
Astronomical Unit and Foot Relationship
This conversion bridges the Astronomical and US Customary / Imperial measurement systems, commonly required when translating scientific data, international engineering specifications, or trade standards. Since 1 Astronomical Unit equals approximately 4.908e+11 feet, the Astronomical Unit represents a larger unit interval than the Foot. Understanding the relationship between Astronomical Unit and Foot is essential for accurate calculations in physics, engineering, commerce, and daily applications.
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.
About Foot
The foot is an imperial unit equal to 12 inches or 0.3048 meters. It remains widely used in the US, UK, and Canada for everyday measurements.
Fun Fact: The foot was originally based on the length of a human foot, which varied from region to region.
Common uses of Foot: height measurement, real estate, construction.
Frequently Asked Questions
- How many feet are in 1 Astronomical Unit?
- There are exactly 490,806,662,401.5747 feet in 1 Astronomical Unit. This means the conversion factor from Astronomical Unit to Foot is 490,806,662,401.5747.
- What is the formula to convert Astronomical Unit to Foot?
- The formula to convert Astronomical Unit to Foot is: ft = AU × 4.908067e+11. For example, to convert 10 Astronomical Units to feet, you would multiply 10 by 490,806,662,401.5747.
- 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 is a Foot?
- The foot is an imperial unit equal to 12 inches or 0.3048 meters. It remains widely used in the US, UK, and Canada for everyday measurements.
- What are the common uses of Astronomical Unit?
- The Astronomical Unit is commonly used in planetary science, orbital mechanics, astronomy.
Related Length Conversions
Cite this page
UnitConvertLab. (2026). Astronomical Unit to Foot converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/astronomical_unit-to-foot