Astronomical Units to Kilometers
1 Astronomical Unit = 149,597,870.7 Kilometers · fixed factor via canonical reference constants · no offset
Direct Answer
1 Astronomical Unit equals 149,597,870.7 Kilometers
This conversion uses a fixed factor based on canonical reference constants.
For 2 Astronomical Units, the result equals 299,195,741.4 Kilometers.
Converter Calculator
149,597,870.7 Kilometers (km)
SwitchExplanation
Formula: Kilometers = Astronomical Units × 149,597,870.7. Why: AU, lunar distance, and planetary radius or diameter units are tied to fixed astronomy reference constants, so the route moves through one meter-based normalization path.
Astronomical Units (AU): a standard astronomy distance unit defined exactly as 149,597,870,700 meters, commonly used for Solar System scales.
Kilometers (km): a metric distance unit often used for planetary, orbital, and near-Earth scale reporting.
This route is useful when translating everyday metric or imperial distances into astronomy reference scales, or when expressing astronomy scales in more familiar distance units.
This conversion is purely multiplicative because both units reduce through meters using fixed astronomical or geometric reference constants with no offset.
Common Conversion Values
| Astronomical Units (AU) | Kilometers (km) |
|---|---|
| 1 | 149,597,870.7 |
| 2 | 299,195,741.4 |
| 5 | 747,989,353.5 |
| 10 | 1,495,978,707 |
| 100 | 14,959,787,070 |
| 1,000 | 149,597,870,700 |
Frequently Asked Questions
How is Astronomical Units to Kilometers calculated?
The factor is derived by reducing both units to meters and applying the fixed astronomy reference constants for AU, light-seconds, or lunar-distance scales.
How do I reverse Astronomical Units to Kilometers?
Use the mirror Kilometers to Astronomical Units route; it applies the inverse relationship for the opposite direction with the same assumptions.
How many kilometers are in 1 astronomical unit?
1 astronomical unit equals exactly 149,597,870.7 kilometers using the fixed AU definition on this page.