Convert feet to astronomical units
1 ft = 0.00000000000203746215487 au — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
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Show this value in all 50 length units
- Gigameters Gm 3.048e-10
- Megameters Mm 0.000 000 304 8
- Kilometers km 0.000 304 8
- Hectometers hm 0.003 048
- Decameters dam 0.030 48
- Meters m 0.3048
- Decimeters dm 3.048
- Centimeters cm 30.48
- Millimeters mm 304.8
- Micrometers µm 304 800
- Nanometers nm 304 800 000
- Picometers pm 304 800 000 000
- Femtometers fm 304 800 000 000 000
- Inches in 12
- Feet ft 1
- Yards yd 0.333 333 333 333
- Miles mi 0.000 189 393 939 394
- Nautical miles nmi 0.000 164 578 833 693
- Thous thou 12 000
- Hands hh 3
- Links li 1.515 151 515 15
- Spans span 1.333 333 333 33
- Cubits cubit 0.666 666 666 667
- Ells ell 0.266 666 666 667
- Fathoms ftm 0.166 666 666 667
- Rods rd 0.060 606 060 606 1
- Chains ch 0.015 151 515 151 5
- Furlongs fur 0.001 515 151 515 15
- Leagues lea 0.000 063 131 313 131 3
- Barleycorns barleycorn 36
- US survey feet ft (US) 0.999 998
- US survey miles mi (US) 0.000 189 393 560 606
- Ångströms Å 3 048 000 000
- Microns µ 304 800
- Bohr radiuss a₀ 5 759 885 231.77
- Planck lengths ℓₚ 1.88584103375e+34
- Astronomical units au 2.03746215487e-12
- Light-years ly 3.22173854211e-17
- Light-seconds ls 1.01670336216e-9
- Light-minutes lmin 1.69450560361e-11
- Parsecs pc 9.87789527423e-18
- Kiloparsecs kpc 9.87789527423e-21
- Megaparsecs Mpc 9.87789527423e-24
- Solar radiuss R☉ 4.38119879258e-10
- Earth radiuss R🜨 4.78417830796e-8
- Point (DTP)s pt 864
- Picas pc 72
- Scandinavian miles mil 0.000 030 48
- Versts вер 0.000 285 714 285 714
- Lis 里 0.000 609 6
Every row is Foot (ft) converted through the meter, in exact rational arithmetic.
How to convert feet to astronomical units
Multiply the number of feet by 0.00000000000203746215487 to get astronomical units.
Foot: Exactly 0.3048 m, i.e. 12 international inches.
Astronomical unit: Fixed at exactly 149 597 870 700 m by the IAU in 2012.
Foot to Astronomical unit conversion table
| Feet (ft) | Astronomical units (au) |
|---|---|
| 1 ft | 2.0374622e-12 |
| 2 ft | 4.0749243e-12 |
| 3 ft | 6.1123865e-12 |
| 5 ft | 1.0187311e-11 |
| 10 ft | 2.0374622e-11 |
| 20 ft | 4.0749243e-11 |
| 25 ft | 5.0936554e-11 |
| 50 ft | 1.0187311e-10 |
| 100 ft | 2.0374622e-10 |
| 250 ft | 5.0936554e-10 |
| 500 ft | 1.0187311e-9 |
| 1000 ft | 2.0374622e-9 |
Astronomical unit to Foot conversion table
| Astronomical units (au) | Feet (ft) |
|---|---|
| 1 au | 490 806 660 000 |
| 2 au | 981 613 320 000 |
| 3 au | 1 472 420 000 000 |
| 5 au | 2 454 033 300 000 |
| 10 au | 4 908 066 600 000 |
| 20 au | 9 816 133 200 000 |
| 25 au | 12 270 167 000 000 |
| 50 au | 24 540 333 000 000 |
| 100 au | 49 080 666 000 000 |
| 250 au | 122 701 670 000 000 |
| 500 au | 245 403 330 000 000 |
| 1000 au | 490 806 660 000 000 |
Frequently asked
How many astronomical units are in a foot?
One foot equals 2.037462155e-12 astronomical units (ft → au). That figure is exact, not rounded.
How do you convert feet to astronomical units?
Multiply the number of feet by 0.00000000000203746215487 to get astronomical units.
What is 1 au in feet?
One astronomical unit is 490806662400 feet.
What is 10 ft in au?
10 ft = 2.0374622e-11 au.
What exactly is a foot?
Exactly 0.3048 m, i.e. 12 international inches.
What exactly is a astronomical unit?
Fixed at exactly 149 597 870 700 m by the IAU in 2012.