The following is a list of surprising unit conversions or values which – by pure coincidence – are almost correct. The conversions are ordered by decreasing accuracy.
| Equivalence | Accuracy | Note |
|---|---|---|
| 1 leap year = √(1015) seconds | 0.0012% | |
| speed of light = 300,000 km/s | 0.07% | The actual speed of light is 299,792.458 km/s |
| π miles = e nautical miles | 0.4% | |
| 4/3 π km³ = 1 mile³ | 0.5% | This means that the volume of a sphere with a radius of 1 km is equal to the volume of a cube with a side length of 1 mile. |
| π = √10 | 0.7% | |
| 10 ft² = 1 m² | 7% | |
| feet per second = km per hour | 9% |
I’d be happy to hear about other amusing conversions.
This email address is being protected from spambots. You need JavaScript enabled to view it.