Instant · Precise · Universal
32 units available
6 categories total
To convert Tm to AU: multiply by 6.685. To convert Tm to km: multiply by 10⁹.
1 Tm = 10¹² m = 10⁹ km = 6.685 AU.
For example, 1 Terameter (Tm) = 157313.0355 Earth's Polar Radius (R⊕ (polar)).
| Terameter (Tm) | Earth's Polar Radius (R⊕ (polar)) |
|---|---|
| 0.1 | 15731.30355 |
| 0.5 | 78656.51773 |
| 1 | 157313.0355 |
| 2 | 314626.0709 |
| 5 | 786565.1773 |
| 10 | 1573130.355 |
| 25 | 3932825.887 |
| 50 | 7865651.773 |
| 100 | 15731303.55 |
| 500 | 78656517.73 |
| 1000 | 157313035.5 |
The terameter is a unit of length equal to 10¹² meters, or one trillion meters (one billion kilometers).
1 Tm = 10¹² m = 10⁹ km = 6.685 AU.
To convert Tm to AU: multiply by 6.685. To convert Tm to km: multiply by 10⁹.
Expressing outer solar system distances in metric form, though AU is standard.
One light-hour is approximately 1.08 Tm. The distance to Pluto's orbit is roughly 5.9 Tm.
Confusing tera (10¹²) with other large prefixes. Remember: tera comes after giga in the SI scale.
Think of the outer solar system: Saturn is about 1.4 Tm from the Sun, a good mental anchor.
The Earth's polar radius is the distance from Earth's center to either pole, approximately 6,356.752 km.
R⊕(polar) = 6,356,752.3 m. It is about 21.385 km shorter than the equatorial radius.
To convert Earth polar radii to meters: multiply by 6,356,752.3.
Geodetic calculations, gravity modeling, and precise cartography near the poles.
At the poles, you are about 21 km closer to Earth's center than at the equator — you weigh very slightly more!
Approximating Earth as a perfect sphere — the difference between equatorial and polar radii matters for precision applications.
Earth's shape (oblate spheroid) is like a slightly squished ball — wider at the equator, flatter at the poles.



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