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1 Millimeters in Astronomical Units

1 mm = 6.68458 × 10⁻¹⁵ au

1 Millimeters equals 6.68458 × 10⁻¹⁵ Astronomical Units (1 mm = 6.68458 × 10⁻¹⁵ au).

Quick Facts: Millimeters to Astronomical Units

Conversion
1 Millimeters = 6.68458 × 10⁻¹⁵ Astronomical Units
Formula
Convert Millimeters to Astronomical Units
Calculation
1 mm → 6.68458 × 10⁻¹⁵ au
Reverse
6.68458 × 10⁻¹⁵ au = 1 mm
Also equals
10,000,000 A · 0.1 cm · 0.01 dm · 0.003 ft · 0.01 hh · 0.039 in · 0.001 m · 1,000 μm

How Much Is 1 mm?

1 mm is roughly A room dimension

How to Convert Millimeters to Astronomical Units

au = mm ÷ 149,598,000,000,000
Divide the value in Millimeters by 149,598,000,000,000
  1. Start with 1 mm
  2. Calculate 1 ÷ 149,598,000,000,000
  3. The result is 6.68458 × 10⁻¹⁵ au

Worked example: 1 mm = 6.68458 × 10⁻¹⁵ au

Common Millimeters to Astronomical Units Conversions

Millimeters (mm) Astronomical Units (au) Status
1 mm 6.68458 × 10⁻¹⁵ au Current
100 mm 6.68459 × 10⁻¹³ au
10,000 mm 6.68459 × 10⁻¹¹ au
1,000,000 mm 6.68459 × 10⁻⁹ au
100,000,000 mm 6.68459 × 10⁻⁷ au
10,000,000,000 mm 0.0001 au
1,000,000,000,000 mm 0.0067 au
100,000,000,000,000 mm 0.6685 au
1 × 10¹⁶ mm 66.8459 au

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