Zettameter to Astronomical unit Converter (and vice versa)

Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026

This converter allows you to convert zettameters [Zm] to astronomical units [au] or astronomical units [au] to zettameters [Zm]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.

1 zettameter [Zm] ≈ 6.685 * 109 astronomical units [au]1 astronomical unit [au] ≈ 1.496 * 10-10 zettameters [Zm]

Convert zettameters to astronomical units

There are two simple ways to convert zettameters [Zm] to astronomical units [au]. In the first calculation method, the value in zettameters [Zm] is divided by the rounded conversion factor of 1.496 * 10-10. The second method multiplies the value in zettameters [Zm] by the rounded conversion factor of 6.685 * 109.

  • Astronomical units [au] ≈ zettameters [Zm] ÷ (1.496 * 10-10)
  • Astronomical units [au] ≈ zettameters [Zm] * 6.685 * 109

However, rounded conversion values are only suitable for rough conversions, as rounding errors can occur in the calculation result. The most accurate conversion of zettameters [Zm] to astronomical units [au] can be achieved using the following calculation method.

  • Astronomical units [au] = zettameters [Zm] ÷ 23,367 ÷ 64,021 * 1019

Convert astronomical units to zettameters

Converting astronomical units [au] to zettameters [Zm] is easy and can be done in two ways. The first method involves multiplication, in which the value in astronomical units [au] is multiplied by the rounded conversion factor of 1.496 * 10-10. The second variant is a division. Here, the value in astronomical units [au] is divided by the rounded conversion factor of 6.685 * 109.

  • Zettameters [Zm] ≈ astronomical units [au] * 1.496 * 10-10
  • Zettameters [Zm] ≈ astronomical units [au] ÷ (6.685 * 109)

However, rounded conversion values do not allow for exact calculations because rounding errors can occur in the calculation result. The most accurate conversion of astronomical units [au] to zettameters [Zm] can be achieved using the following calculation method.

  • Zettameters [Zm] = astronomical units [au] * 23,367 * 64,021 ÷ 1019

Converter

Decimal places

How it's calculated

Factor: 
≈ 6.685 * 109
Astronomical units = Zettameters ÷ 23,367 ÷ 64,021 * 1019
Zettameters = Astronomical units * 23,367 * 64,021 ÷ 1019

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