Use these estimations to figure out how many steps it takes you to walk a kilometer if you don't already know your stride length. You then estimate how far you walked in a given time using a pedometer.
If you already know your stride length (you know how far you walked and how fast) use it below (if not use one of the estimates) to figure out how many calories you burned walking. Note that you must know how long it took you to walk that distance for the calculator to work.
Calories Burned While Running and Walking
by C. D. Chester
How Many Steps Are in a Mile?
by Hannah Rex