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Get ready reference of different slopes with angle and vice versa.
Thu Jun 26, 2025
Don't mug which you can refer easily. - Vijay Solanki
Calculate slope ratio from angle
Slope:1 in 0
Calculate angle from slope ratio
Angle: 0°
| Slope | Angle |
| 1 in 1 |
45° |
| 1 in 2 | 26.56° |
| 1 in 3 | 18.43° |
| 1 in 4 | 14.04° |
| 1 in 5 | 11.31° |
| 1 in 6 | 9.46° |
| 1 in 7 | 8.13° |
| 1 in 8 | 7.13° |
| 1 in 9 | 6.34° |
| 1 in 10 | 5.71° |
| 1 in 15 | 3.81° |
| 1 in 20 | 2.86° |
| 1 in 25 | 2.29° |
| 1 in 50 | 1.15° |
| 1 in 75 | 0.76° |
| 1 in 100 | 0.57° |
| 1 in 200 | 0.29° |
| 1 in 500 | 0.11° |
| Slope Angle | Slope in Ratio |
| 5° | 1 in 11.43 |
| 8° | 1 in 7.12 |
| 10° | 1 in 5.67 |
| 12° | 1 in 4.70 |
| 15° | 1 in 3.73 |
| 18° | 1 in 3.08 |
| 20° | 1 in 2.75 |
| 25° | 1 in 2.14 |
| 30° | 1 in 1.73 |

Vijay Solanki
A California-based travel writer, lover of food, oceans, and nature.