Decameter to Astronomical Unit Converter
Unit Converter
Instant · Precise · Universal
32 units available
6 categories total
How to Convert Decameter to Astronomical Unit
To convert dam to meters: multiply by 10. To convert dam to feet: multiply by 32.8084.
1 dam = 10 m = 0.01 km = 1,000 cm. One hectare = 100 m × 100 m = 10 dam × 10 dam.
For example, 1 Decameter (dam) = 6.684587e-11 Astronomical Unit (AU).
Decameter to Astronomical Unit — Common Values
| Decameter (dam) | Astronomical Unit (AU) |
|---|---|
| 0.1 | 6.684587e-12 |
| 0.5 | 3.342294e-11 |
| 1 | 6.684587e-11 |
| 2 | 1.336917e-10 |
| 5 | 3.342294e-10 |
| 10 | 6.684587e-10 |
| 25 | 1.671147e-9 |
| 50 | 3.342294e-9 |
| 100 | 6.684587e-9 |
| 500 | 3.342294e-8 |
| 1000 | 6.684587e-8 |
About Decameter (dam)
Definition
The decameter (or dekameter) is a unit of length equal to 10 meters.
Mathematical Relationship
1 dam = 10 m = 0.01 km = 1,000 cm. One hectare = 100 m × 100 m = 10 dam × 10 dam.
Conversion Formula
To convert dam to meters: multiply by 10. To convert dam to feet: multiply by 32.8084.
Practical Applications
Occasionally used in plot/field dimensions in agriculture and in some European forestry measurements.
Interesting Facts
The decameter is one of the least-used SI prefixed units. Most people skip from meters to hectometers or kilometers.
Common Mistakes
Confusing 'dam' (decameter) with 'dm' (decimeter) — they differ by a factor of 100.
Educational Tips
Remember: deca = 10, deci = 0.1. They're opposite prefixes — deca makes larger, deci makes smaller.
About Astronomical Unit (AU)
Definition
The astronomical unit is a unit of length approximating the mean Earth-Sun distance, defined as exactly 149,597,870,700 meters.
Mathematical Relationship
1 AU = 149,597,870,700 m ≈ 149.598 Gm ≈ 499 light-seconds ≈ 8.317 light-minutes.
Conversion Formula
To convert AU to km: multiply by 149,597,870.7. To convert AU to light-years: divide by 63,241.
Practical Applications
Spacecraft mission planning, expressing planetary orbit sizes, and solar system scale models.
Interesting Facts
Light takes about 8 minutes and 20 seconds to travel 1 AU. Mars is about 1.52 AU from the Sun, Jupiter about 5.2 AU.
Common Mistakes
Thinking the AU is the exact Earth-Sun distance — Earth's actual distance varies from ~147 to ~152 Gm over the year due to orbital eccentricity.
Educational Tips
AU makes the solar system manageable: Mercury ≈ 0.39 AU, Venus ≈ 0.72, Earth = 1, Mars ≈ 1.52, Jupiter ≈ 5.2, Saturn ≈ 9.5.