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1 × 10²¹ Angstroms in Astronomical Units (A to au)

1 × 10²¹ A = 0.6685 au

1 × 10²¹ Angstroms equals 0.6685 Astronomical Units (1 × 10²¹ A = 0.6685 au).

Quick Facts: Angstroms to Astronomical Units

Conversion
1 × 10²¹ Angstroms = 0.6685 Astronomical Units
Formula
Convert Angstroms to Astronomical Units
Calculation
1 × 10²¹ A → 0.6685 au
Reverse
0.6685 au = 1 × 10²¹ A
Also equals
4,970,969,537.9 ch · 54,680,664,916.9 ftm · 328,083,989,501.3 ft · 497,096,953.8 fur · 984,251,968,503.9 hh · 100,000,000 km · 20,712,373.1 lea · 100,000,000,000 m

How to Convert Angstroms to Astronomical Units

au = A ÷ 1.49598 × 10²¹
Divide the value in Angstroms by 1.49598 × 10²¹
  1. Start with 1 × 10²¹ A
  2. Calculate 1 × 10²¹ ÷ 1.49598 × 10²¹
  3. The result is 0.6685 au

Worked example: 1 × 10²¹ A = 0.6685 au

Common Angstroms to Astronomical Units Conversions

Angstroms (A) Astronomical Units (au) Status
1 × 10¹⁸ A 0.0007 au
5 × 10¹⁸ A 0.0033 au
1 × 10¹⁹ A 0.0067 au
5 × 10¹⁹ A 0.0334 au
1 × 10²⁰ A 0.0668 au
5 × 10²⁰ A 0.3342 au
1 × 10²¹ A 0.6685 au Current
5 × 10²¹ A 3.3423 au
1 × 10²² A 6.6846 au

Want to learn more? Read our complete Angstroms to Astronomical Units guide with formula, FAQ, and background info.