Taking the example of a 38 year old man who weighs 108kg, an hour of incline walking burns the following amount of calories under various conditions:
380 calories burnt per hour
Gradient: 20%
Average speed: 1.3 km/h
442 calories burnt per hour
Gradient: 20%
Average speed: 1.6 km/h
483 calories burnt per hour
Gradient: 20%
Average speed: 1.8 km/h
544 calories burnt per hour
Gradient: 20%
Average speed: 2.1 km/h
606 calories burnt per hour
Gradient: 20%
Average speed: 2.4 km/h
668 calories burnt per hour
Gradient: 20%
Average speed: 2.7 km/h
750 calories burnt per hour
Gradient: 20%
Average speed: 3.1 km/h
811 calories burnt per hour
Gradient: 20%
Average speed: 3.4 km/h
872 calories burnt per hour
Gradient: 20%
Average speed: 3.7 km/h
934 calories burnt per hour
Gradient: 20%
Average speed: 4.0 km/h
996 calories burnt per hour
Gradient: 20%
Average speed: 4.3 km/h
1,078 calories burnt per hour
Gradient: 20%
Average speed: 4.7 km/h
