Ladder length with known vertical height
Minimum length of ladder or stairs
Our table contains the minimum lengths required of ladders and stairs to safely reach a given vertical height. Essentially, the next-highest ladder length or stair length from our product range is recommended.
Example to calculate the minimum length:
- Vertical height (upper contact point) = 6.00 m
- Use of a rung ladder with a 70° inclination angle
- Formula: vertical height in m x factor 1.064 = minimum ladder length in m
- 6.0 m x 1.064 = 6.40 m
Minimum ladder lengths
| Vertical height | 75° rung ladder * | 70° rung ladder ** | 70° step ladder | 60° stairs | 45° stairs |
|---|---|---|---|---|---|
| 2.00 m | 2.05 m | 2.15 m | 2.15 m | 2.30 m | 2.85 m |
| 2.50 m | 2.60 m | 2.65 m | 2.65 m | 2.90 m | 3.55 m |
| 3.00 m | 3.10 m | 3.20 m | 3.20 m | 3.45 m | 4.25 m |
| 3.50 m | 3.60 m | 3.70 m | 3.70 m | 4.05 m | 4.95 m |
| 4.00 m | 4.15 m | 4.25 m | 4.25 m | 4.60 m | 5.65 m |
| 4.50 m | 4.65 m | 4.80 m | - | 5.20 m | 6.35 m |
| 5.00 m | 5.20 m | 5.30 m | - | 5.80 m | 7.05 m |
| 5.50 m | 5.70 m | 5.85 m | - | 6.35 m | 7.80 m |
| 6.00 m | 6.20 m | 6.40 m | - | 6.95 m | 8.50 m |
| 6.50 m | 6.75 m | 6.90 m | - | 7.50 m | 9.20 m |
| 7.00 m | 7.25 m | 7.45 m | - | 8.10 m | 9.90 m |
| Formula | vert. height x factor 1.035 | vert. height x factor 1.064 | vert. height x factor 1.064 | vert. height x factor 1.155 | vert. height x factor 1.414 |