Bridge Reference
Switch between probability, IMP, and VP quick references.
IMP scale
Convert score difference to IMPs.
| Score diff (absolute) | IMPs |
|---|---|
| 0-10 | 0 |
| 20-40 | 1 |
| 50-80 | 2 |
| 90-120 | 3 |
| 130-160 | 4 |
| 170-210 | 5 |
| 220-260 | 6 |
| 270-310 | 7 |
| 320-360 | 8 |
| Score diff (absolute) | IMPs |
|---|---|
| 370-420 | 9 |
| 430-490 | 10 |
| 500-590 | 11 |
| 600-740 | 12 |
| 750-890 | 13 |
| 900-1090 | 14 |
| 1100-1290 | 15 |
| 1300-1490 | 16 |
| 1500-1740 | 17 |
| Score diff (absolute) | IMPs |
|---|---|
| 1750-1990 | 18 |
| 2000-2240 | 19 |
| 2250-2490 | 20 |
| 2500-2990 | 21 |
| 3000-3490 | 22 |
| 3500-3990 | 23 |
| 4000+ | 24 |
Use absolute score difference, then apply sign by result direction.