📐 Astronomical Units to Micrometers Converter

5.0 out of 5 (4 ratings)

Enter details

1 astronomical unit =
1.49598 × 10¹⁷ micrometers
1 micrometer =
6.68459 × 10⁻¹⁸ astronomical units
Formula
µm = AU × 1.49598 × 10¹⁷
Handy values
5 AU = 7.47989 × 10¹⁷ µm · 10 AU = 1.49598 × 10¹⁸ µm · 100 AU = 1.49598 × 10¹⁹ µm

Rate this calculator

Was it useful? A quick star rating helps others — and you can leave a comment too.
Rate it: ★ ★ ★ ★ ★

⚡ Astronomical Units to Micrometers: the quick answer

1 AU = 1.49598 × 10¹⁷ µm 1 astronomical unit equals 1.49598 × 10¹⁷ micrometers

To convert astronomical units to micrometers, multiply the value by 1.49598 × 10¹⁷. To go the other way, multiply micrometers by 6.68459 × 10⁻¹⁸ to get astronomical units.

↔ Convert micrometers to astronomical units instead

🧮 Formula

Astronomical Units to Micrometers
µm = AU × 1.49598 × 10¹⁷
Micrometers to Astronomical Units
AU = µm × 6.68459 × 10⁻¹⁸

Where

  • AU = the length in astronomical units
  • µm = the length in micrometers
Every unit here is defined by its length in meters, so the conversion factor is (meters per astronomical unit) ÷ (meters per micrometer).

📊 Astronomical Units to Micrometers conversion table

Astronomical Units (AU)Micrometers (µm)
1 AU1.49598 × 10¹⁷ µm
2 AU2.99196 × 10¹⁷ µm
3 AU4.48794 × 10¹⁷ µm
4 AU5.98391 × 10¹⁷ µm
5 AU7.47989 × 10¹⁷ µm
6 AU8.97587 × 10¹⁷ µm
7 AU1.04719 × 10¹⁸ µm
8 AU1.19678 × 10¹⁸ µm
9 AU1.34638 × 10¹⁸ µm
10 AU1.49598 × 10¹⁸ µm
12 AU1.79517 × 10¹⁸ µm
14 AU2.09437 × 10¹⁸ µm
15 AU2.24397 × 10¹⁸ µm
20 AU2.99196 × 10¹⁸ µm
21 AU3.14156 × 10¹⁸ µm
24 AU3.59035 × 10¹⁸ µm
25 AU3.73995 × 10¹⁸ µm
30 AU4.48794 × 10¹⁸ µm
40 AU5.98391 × 10¹⁸ µm
50 AU7.47989 × 10¹⁸ µm
60 AU8.97587 × 10¹⁸ µm
75 AU1.12198 × 10¹⁹ µm
80 AU1.19678 × 10¹⁹ µm
100 AU1.49598 × 10¹⁹ µm
200 AU2.99196 × 10¹⁹ µm
250 AU3.73995 × 10¹⁹ µm
300 AU4.48794 × 10¹⁹ µm
400 AU5.98391 × 10¹⁹ µm
500 AU7.47989 × 10¹⁹ µm
750 AU1.12198 × 10²⁰ µm
1,000 AU1.49598 × 10²⁰ µm

✏️ Worked examples

Convert 25 astronomical units to micrometers

25 AU × 1.49598 × 10¹⁷ = 3.73995 × 10¹⁸ µm

Try this example →

Convert 250 astronomical units to micrometers

250 AU × 1.49598 × 10¹⁷ = 3.73995 × 10¹⁹ µm

Try this example →

📘 About these units

Astronomical unit (AU). An astronomical unit is the average distance from the Earth to the Sun, about 149.6 million kilometers.

Micrometer (µm). A micrometer (micron) is one millionth of a meter, used for cells, bacteria and fiber thickness.

❓ Frequently asked questions

How many micrometers are in one astronomical unit?

There are 1.49598 × 10¹⁷ micrometers in one astronomical unit.

How do I convert astronomical units to micrometers?

Multiply the number of astronomical units by 1.49598 × 10¹⁷. For example, 10 astronomical units equal 1.49598 × 10¹⁸ micrometers.

How many astronomical units are in one micrometer?

One micrometer equals 6.68459 × 10⁻¹⁸ astronomical units.

How many micrometers is 12 astronomical units?

1.79517 × 10¹⁸ micrometers. Other common values: 5 astronomical units = 7.47989 × 10¹⁷ micrometers and 100 astronomical units = 1.49598 × 10¹⁹ micrometers.

What people are saying
★★★★★
Anonymous · 10 Oct 2026
★★★★★
Anonymous · 02 Oct 2026
★★★★★
Anonymous · 01 Oct 2026
★★★★★
Anonymous · 28 Sep 2026