calculate calories on blackberry

i develop a application that finde the distance between the two points and calculate the speed but we require the calories burn after walk this distance. that i measure it.

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I am developing an application that finds the distance between two points and calculates the speed of movement between these points. We require t开发者_运维知识库he number of calories burnt after walking this distance. How do I measure it?

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This question is pretty off topic and would be better answered by a dietist/nutritionist, but besides the distance and the speed, the biggest factor is the person's weight.

For the constants in the equation, I suggest you just google it and try to decide what works best for you.