Convert astronomical units to millimeters
1 au = 149597870700000 mm — 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 149.597 870 7
- Megameters Mm 149 597.8707
- Kilometers km 149 597 870.7
- Hectometers hm 1 495 978 707
- Decameters dam 14 959 787 070
- Meters m 149 597 870 700
- Decimeters dm 1 495 978 707 000
- Centimeters cm 14 959 787 070 000
- Millimeters mm 149 597 870 700 000
- Micrometers µm 1.495978707e+17
- Nanometers nm 1.495978707e+20
- Picometers pm 1.495978707e+23
- Femtometers fm 1.495978707e+26
- Inches in 5 889 679 948 820
- Feet ft 490 806 662 402
- Yards yd 163 602 220 801
- Miles mi 92 955 807.273
- Nautical miles nmi 80 776 388.067
- Thous thou 5 889 679 948 820 000
- Hands hh 1 472 419 987 200
- Links li 743 646 458 184
- Spans span 654 408 883 202
- Cubits cubit 327 204 441 601
- Ells ell 130 881 776 640
- Fathoms ftm 81 801 110 400.3
- Rods rd 29 745 858 327.4
- Chains ch 7 436 464 581.84
- Furlongs fur 743 646 458.184
- Leagues lea 30 985 269.091
- Barleycorns barleycorn 17 669 039 846 500
- US survey feet ft (US) 490 805 680 788
- US survey miles mi (US) 92 955 621.3614
- Ångströms Å 1.495978707e+21
- Microns µ 1.495978707e+17
- Bohr radiuss a₀ 2.82699004642e+21
- Planck lengths ℓₚ 9.25583343594e+45
- Astronomical units au 1
- Light-years ly 0.000 015 812 507 409 8
- Light-seconds ls 499.004 783 836
- Light-minutes lmin 8.316 746 397 27
- Parsecs pc 0.000 004 848 136 811 1
- Kiloparsecs kpc 4.8481368111e-9
- Megaparsecs Mpc 4.8481368111e-12
- Solar radiuss R☉ 215.032 155 671
- Earth radiuss R🜨 23 481.065 876 6
- Point (DTP)s pt 424 056 956 315 000
- Picas pc 35 338 079 692 900
- Scandinavian miles mil 14 959 787.07
- Versts вер 140 230 474.972
- Lis 里 299 195 741.4
Every row is Astronomical unit (au) converted through the meter, in exact rational arithmetic.
How to convert astronomical units to millimeters
Multiply the number of astronomical units by 149597870700000 to get millimeters.
The exact factor is 149597870700000 .
Astronomical unit: Fixed at exactly 149 597 870 700 m by the IAU in 2012.
Astronomical unit to Millimeter conversion table
| Astronomical units (au) | Millimeters (mm) |
|---|---|
| 1 au | 149 597 870 000 000 |
| 2 au | 299 195 740 000 000 |
| 3 au | 448 793 610 000 000 |
| 5 au | 747 989 350 000 000 |
| 10 au | 1 495 978 700 000 000 |
| 20 au | 2 991 957 400 000 000 |
| 25 au | 3 739 946 800 000 000 |
| 50 au | 7 479 893 500 000 000 |
| 100 au | 1.4959787e+16 |
| 250 au | 3.7399468e+16 |
| 500 au | 7.4798935e+16 |
| 1000 au | 1.4959787e+17 |
Millimeter to Astronomical unit conversion table
| Millimeters (mm) | Astronomical units (au) |
|---|---|
| 1 mm | 6.6845871e-15 |
| 2 mm | 1.3369174e-14 |
| 3 mm | 2.0053761e-14 |
| 5 mm | 3.3422936e-14 |
| 10 mm | 6.6845871e-14 |
| 20 mm | 1.3369174e-13 |
| 25 mm | 1.6711468e-13 |
| 50 mm | 3.3422936e-13 |
| 100 mm | 6.6845871e-13 |
| 250 mm | 1.6711468e-12 |
| 500 mm | 3.3422936e-12 |
| 1000 mm | 6.6845871e-12 |
Frequently asked
How many millimeters are in a astronomical unit?
One astronomical unit equals 149597870700000 millimeters (au → mm). That figure is exact, not rounded.
How do you convert astronomical units to millimeters?
Multiply the number of astronomical units by 149597870700000 to get millimeters.
What is 1 mm in astronomical units?
One millimeter is 6.684587122e-15 astronomical units.
What is 10 au in mm?
10 au = 1 495 978 700 000 000 mm.
What exactly is a astronomical unit?
Fixed at exactly 149 597 870 700 m by the IAU in 2012.