How to use this tool
- Enter vertical rise, horizontal run.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
Input reference and sample values
Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.
| Input | Format and units | Sample |
|---|---|---|
| Vertical rise | Numeric value. Unit: m. Zero or positive. | 3 |
| Horizontal run | Numeric value. Unit: m. Must be greater than zero. | 6 |
Result for these sample inputs
6.70820393 m
Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.
The method, explained
Length = √(rise² + run²).
Using vertical rise = 3 m, horizontal run = 6 m, the result is 6.70820393 m. Change these example inputs to match your task; use the method above to check each step.
What to keep in mind
Excludes ridge thickness, seat cuts, overhang and connection design. A material-quantity estimate, not a structural design or building-code check. Confirm site measurements, supplier coverage and waste before ordering.
Methodology maintained by ClarityKit. How these tools are built and checked.