1. What is Slope Percentage?

Slope percentage is a way to express the steepness of a slope as a percentage. It represents the ratio of vertical change (rise) to horizontal change (run) multiplied by 100. This measurement is commonly used in engineering, construction, and geography.

2. How Does the Calculator Work?

The calculator uses the slope percentage formula:

Where:

• \( Rise \) — Vertical change (in meters or any consistent unit)
• \( Run \) — Horizontal change (in meters or any consistent unit)

Explanation: The formula calculates how much vertical change occurs per unit of horizontal distance, expressed as a percentage.

3. Importance of Slope Calculation

Details: Slope percentage is crucial for determining land grading, road construction, wheelchair ramp design, roof pitch, and many other applications where incline needs to be precisely measured and communicated.

4. Using the Calculator

Tips: Enter both rise and run values in the same units (meters is common but any unit works as long as both use the same). Values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between slope percentage and slope angle?
A: Slope percentage is the ratio expressed as a percentage, while slope angle is the angle in degrees between the slope and horizontal plane.

Q2: What is considered a steep slope?
A: Generally, slopes over 15% are considered steep, but this depends on context. For wheelchair ramps, maximum is typically 8.33%.

Q3: How do I measure rise and run in the field?
A: Use a level and measuring tape, or specialized tools like inclinometers or laser levels for more precise measurements.

Q4: Can I use different units for rise and run?
A: No, both must be in the same units since the calculation is a ratio. The calculator will work with any consistent units.

Q5: What does a 100% slope mean?
A: A 100% slope means the rise equals the run, which corresponds to a 45-degree angle (1:1 slope).