Instant · Precise · Universal
32 units available
6 categories total
To convert Gm to km: multiply by 1,000,000. To convert Gm to AU: divide by 149.598.
1 Gm = 10⁹ m = 10⁶ km = 0.00668 AU.
For example, 1 Gigameter (Gm) = 100000000000 Centimeter (cm).
| Gigameter (Gm) | Centimeter (cm) |
|---|---|
| 0.1 | 10000000000 |
| 0.5 | 50000000000 |
| 1 | 100000000000 |
| 2 | 200000000000 |
| 5 | 500000000000 |
| 10 | 1.000000e+12 |
| 25 | 2.500000e+12 |
| 50 | 5.000000e+12 |
| 100 | 1.000000e+13 |
| 500 | 5.000000e+13 |
| 1000 | 1.000000e+14 |
The gigameter is a unit of length equal to 10⁹ meters, or one billion meters (one million kilometers).
1 Gm = 10⁹ m = 10⁶ km = 0.00668 AU.
To convert Gm to km: multiply by 1,000,000. To convert Gm to AU: divide by 149.598.
Describing distances between planets in a compact metric format, though AU is preferred.
Light travels about 0.3 Gm per second (299,792 km/s ≈ 0.3 Gm/s).
Mixing up Gm with Gb (gigabyte) in mixed technical contexts. Context matters for the prefix 'giga'.
The Sun is ~150 Gm away from Earth — this is a useful anchor for the gigameter scale.
The centimeter is a unit of length equal to one hundredth of a meter (10⁻² m), or 10 millimeters.
1 cm = 0.01 m = 10 mm = 0.3937 inches. There are 2.54 cm in one inch.
To convert cm to inches: divide by 2.54. To convert inches to cm: multiply by 2.54.
Measuring height, waist circumference, screen sizes, furniture dimensions, and map scales.
The CGS system was the primary scientific system for over a century. 1 cm is roughly the width of an adult fingernail.
Confusing cm and inches — a common error in international contexts. Always verify which system a measurement uses.
Your fingernail width is roughly 1 cm — a handy mental reference that's always available.



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