How many AU is 1 centimeter?

One centimeter equals approximately 6.685 x 10-14 AU, about 14 orders of magnitude smaller than an AU.

How many centimeters are in 1 AU?

One AU contains approximately 1.496 x 1013 cm (about 14.96 trillion centimeters).

Is this conversion practical?

No. Centimeters measure small everyday objects. AU measures solar system distances. These scales have no practical overlap.

Centimeters to Astronomical Units (cm to au) Converter

1 cm = 6.68459 × 10⁻¹⁴ au

1 Centimeter equals 6.68459 × 10⁻¹⁴ Astronomical Units (1 cm = 6.68459 × 10⁻¹⁴ au). Convert Centimeters to Astronomical Units with formula, table, and examples.

One centimeter equals approximately 6.685 x 10^-14 astronomical units. The Earth-Sun distance (1 AU) is about 1.496 x 10¹³ cm (about 15 trillion centimeters). The centimeter measures everyday objects; the AU measures planetary orbits.

How to Convert Centimeters to Astronomical Units

au = cm ÷ 14,959,800,000,000

Divide the value in Centimeters by 14,959,800,000,000

Take your value in Centimeters
Divide by 14,959,800,000,000
Read the result in Astronomical Units

Common Centimeters to Astronomical Units Conversions

Centimeters (cm)	Astronomical Units (au)	Status
100,000,000,000,000 cm	6.6846 au
200,000,000,000,000 cm	13.3692 au
500,000,000,000,000 cm	33.4229 au
1 × 10¹⁵ cm	66.8459 au
2.5 × 10¹⁵ cm	167.1147 au
5 × 10¹⁵ cm	334.2294 au
1 × 10¹⁶ cm	668.4587 au
5 × 10¹⁶ cm	3,342.2936 au
1 × 10¹⁷ cm	6,684.5871 au

Good to Know About Centimeters to Astronomical Units Conversion

A centimeter is something you can feel between your fingers. An AU is a distance you cannot comprehend. The 14-order-of-magnitude gap between them represents the difference between touch and imagination.

Centimeters to Astronomical Units: What You Need to Know

The Earth-Sun distance is about 14.96 trillion centimeters. Mount Everest at 884,800 cm (8,848 m) is only 5.91 x 10^-9 AU tall. Even stacking Earth's diameter (1.275 billion cm) gives only 0.0000852 AU. These comparisons show how thin Earth is relative to its orbit.

What is a Centimeter? cm

A metric unit of length equal to one hundredth of a meter. Commonly used for body height, clothing sizes, and everyday measurements.

Metric body height clothing furniture

Learn more about Centimeter →

What is a Astronomical Unit? au

Exactly 149,597,870,700 meters by IAU 2012 definition. Roughly the average distance from the Earth to the Sun. Used for distances within our solar system.

Astronomical solar system distances astronomy planetary science

Learn more about Astronomical Unit →

Going the other way? Use our Astronomical Units to Centimeters converter.

Centimeters to Astronomical Units FAQ

One centimeter equals approximately 6.685 x 10^-14 AU, about 14 orders of magnitude smaller than an AU.
One AU contains approximately 1.496 x 10¹³ cm (about 14.96 trillion centimeters).
No. Centimeters measure small everyday objects. AU measures solar system distances. These scales have no practical overlap.

Non-Frequently Asked Questions About Centimeters to Astronomical Units

Questions nobody should ask - but someone did.

A US penny is about 0.15 cm thick. The Sun is about 1.496 x 10¹³ cm away. So roughly 100 trillion pennies, worth about 1 trillion dollars. The US national debt is cheaper.