How do you convert slope into feet?

To convert slope into feet, you need to understand that slope is often expressed as a ratio or a percentage. For example, a slope of 10% means that for every 100 horizontal feet, the elevation changes by 10 feet. If you have a slope ratio (like 1:10), it indicates that for every 10 horizontal feet, the elevation changes by 1 foot. To convert this into feet, simply multiply the horizontal distance by the slope ratio to find the vertical change in elevation.