📐 Planck Lengths to Astronomical Units Converter

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25 Planck lengths =
2.701 × 10⁻⁴⁵ astronomical units
1 Planck length =
1.0804 × 10⁻⁴⁶ astronomical units
1 astronomical unit =
9.25583 × 10⁴⁵ Planck lengths
Formula
AU = ℓP × 1.0804 × 10⁻⁴⁶
Handy values
100 ℓP = 1.0804 × 10⁻⁴⁴ AU · 1,000 ℓP = 1.0804 × 10⁻⁴³ AU · 10,000 ℓP = 1.0804 × 10⁻⁴² AU

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⚡ Planck Lengths to Astronomical Units: the quick answer

1 ℓP = 1.0804 × 10⁻⁴⁶ AU 1 Planck length equals 1.0804 × 10⁻⁴⁶ astronomical units

To convert Planck lengths to astronomical units, multiply the value by 1.0804 × 10⁻⁴⁶. To go the other way, multiply astronomical units by 9.25583 × 10⁴⁵ to get Planck lengths.

↔ Convert astronomical units to Planck lengths instead

🧮 Formula

Planck Lengths to Astronomical Units
AU = ℓP × 1.0804 × 10⁻⁴⁶
Astronomical Units to Planck Lengths
ℓP = AU × 9.25583 × 10⁴⁵

Where

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

📊 Planck Lengths to Astronomical Units conversion table

Planck Lengths (ℓP)Astronomical Units (AU)
1 ℓP1.0804 × 10⁻⁴⁶ AU
5 ℓP5.402 × 10⁻⁴⁶ AU
10 ℓP1.0804 × 10⁻⁴⁵ AU
25 ℓP2.701 × 10⁻⁴⁵ AU
50 ℓP5.402 × 10⁻⁴⁵ AU
100 ℓP1.0804 × 10⁻⁴⁴ AU
250 ℓP2.701 × 10⁻⁴⁴ AU
500 ℓP5.402 × 10⁻⁴⁴ AU
1,000 ℓP1.0804 × 10⁻⁴³ AU
2,500 ℓP2.701 × 10⁻⁴³ AU
5,000 ℓP5.402 × 10⁻⁴³ AU
10,000 ℓP1.0804 × 10⁻⁴² AU
100,000 ℓP1.0804 × 10⁻⁴¹ AU
1,000,000 ℓP1.0804 × 10⁻⁴⁰ AU

✏️ Worked examples

Convert 25 Planck lengths to astronomical units

25 ℓP × 1.0804 × 10⁻⁴⁶ = 2.701 × 10⁻⁴⁵ AU

Try this example →

Convert 250 Planck lengths to astronomical units

250 ℓP × 1.0804 × 10⁻⁴⁶ = 2.701 × 10⁻⁴⁴ AU

Try this example →

📘 About these units

Planck length (ℓP). The Planck length is about 1.616 × 10⁻³⁵ meters, the smallest length that has meaning in current physics theories.

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

❓ Frequently asked questions

How many astronomical units are in one Planck length?

There are 1.0804 × 10⁻⁴⁶ astronomical units in one Planck length.

How do I convert Planck lengths to astronomical units?

Multiply the number of Planck lengths by 1.0804 × 10⁻⁴⁶. For example, 10 Planck lengths equal 1.0804 × 10⁻⁴⁵ astronomical units.

How many Planck lengths are in one astronomical unit?

One astronomical unit equals 9.25583 × 10⁴⁵ Planck lengths.

How many astronomical units is 1,000 Planck lengths?

1.0804 × 10⁻⁴³ astronomical units. Other common values: 100 Planck lengths = 1.0804 × 10⁻⁴⁴ astronomical units and 10,000 Planck lengths = 1.0804 × 10⁻⁴² astronomical units.

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