Geohash
Worked example
Columns: geohash length | lat bits | lng bits | lat error | lng error | km error
1 | 2 | 3 | ±23 | ±23 | ±2500 | 2 | 5 | 5 | ± 2.8 | ± 5.6 | ±630 | 3 | 7 | 8 | ± 0.70 | ± 0.7 | ±78 | 4 | 10 | 10 | ± 0.087 | ± 0.18 | ±20 | 5 | 12 | 13 | ± 0.022 | ± 0.022 | ±2.4 | 6 | 15 | 15 | ± 0.0027 | ± 0.0055 | ±0.61 | 7 | 17 | 18 | ±0.00068 | ±0.00068 | ±0.076 | 8 | 20 | 20 | ±0.000085 | ±0.00017 | ±0.019