Astronomical unit to Light day Converter (and vice versa)
Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026
This converter allows you to convert astronomical units [au] to light days [ld] or light days [ld] to astronomical units [au]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.
Convert astronomical units to light days
There are two simple ways to convert astronomical units [au] to light days [ld]. In the first calculation method, the value in astronomical units [au] is divided by the rounded conversion factor of 173.1446. The second method multiplies the value in astronomical units [au] by the rounded conversion factor of 0.0058.
- Light days [ld] ≈ astronomical units [au] ÷ 173.1446
- Light days [ld] ≈ astronomical units [au] * 0.0058
However, rounded conversion values are only suitable for rough conversions, as rounding errors can occur in the calculation result. The most accurate conversion of astronomical units [au] to light days [ld] can be achieved using the following calculation method.
- Light days [ld] = astronomical units [au] ÷ 7,040,136 ÷ 36,792 * 23,367 * 64,021
Convert light days to astronomical units
Converting light days [ld] to astronomical units [au] is easy and can be done in two ways. The first method involves multiplication, in which the value in light days [ld] is multiplied by the rounded conversion factor of 173.1446. The second variant is a division. Here, the value in light days [ld] is divided by the rounded conversion factor of 0.0058.
- Astronomical units [au] ≈ light days [ld] * 173.1446
- Astronomical units [au] ≈ light days [ld] ÷ 0.0058
However, rounded conversion values do not allow for exact calculations because rounding errors can occur in the calculation result. The most accurate conversion of light days [ld] to astronomical units [au] can be achieved using the following calculation method.
- Astronomical units [au] = light days [ld] * 7,040,136 * 36,792 ÷ 23,367 ÷ 64,021
Converter
Decimal places
How it's calculated
To all available units
Astronomical units
Light hours
Astronomical units
Light minutes
Astronomical units
Light seconds
Astronomical units
Megaparsecs
Astronomical units
Parsecs
Popular with other users …
Power
Watts, kilowatts, and horsepower are everyday units of power. However, it is also possible to use kilojoules per second, HP, or joules per second. The power converter is ideal for converting between different units of power.
Power converter
Pressure
Hectopascals, millibars, and bars are just a few examples of the many units of pressure. The pressure converter makes conversion a breeze and ensures that the results are accurate and precise.
Pressure converter
Resistance
Electrical resistance is often expressed in ohms or kiloohms. However, it is also possible to use statohms or deciohms. The resistance converter is ideal for converting between different units of resistance.
Resistance converter
Speed
While mph is used in the USA, km/h is the standard in Europe, and seafaring and aviation rely on knots. This speed converter is the perfect tool for accurately converting between various units of speed.
Speed converter