Convert 21 Bohr Radius to Kilometer

21 a₀ (Bohr radius) is equal to 0.0000000000011112722228876057 km (kilometer). To convert from Bohr radius to kilometer, multiply by 0.000000000000052917724899409786 or divide by 18,897,259,886,000.

• 21 a₀ × 5.291772489941E-14 = 1.1112722228876E-12 km
• 21 a₀ ÷ 18897259886000 = 1.1112722228876E-12 km