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Mathematics

Slope Calculator

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Pro Tip

Road grade % = (rise/run) × 100. A 5% grade means 5 feet of elevation gain per 100 feet of horizontal distance. Most cars struggle above 20% grade.

Did You Know?

The steepest street in the world is Baldwin Street in Dunedin, New Zealand at a 35% grade (19.3°). The steepest road legally driven by regular cars is Ffordd Pen Llech in Wales at 37.45%.

References

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