The only way to know for sure is a heart rate monitor that continuously monitors your pulse. If your treadmill asks your age, weight and gender it could still be off. Spark may be more accurate but not if it doesn't have the specific incline and speed. I'd believe the lower end and plan my meals based on those numbers.
I have a treadmill that displays how many calories I've burn. I do 30 min 3.2 miles it says I burn 230 calories. How reliable is the count? When I go on websites including this one. They ask about inclines and other things that I can not figure out. If I pick something that I think sounds like what I might be doing it gives a far less calorie burn so how do I figure this one out?
SparkPeople, SparkCoach, SparkPages, SparkPoints, SparkDiet, SparkAmerica, SparkRecipes, DailySpark, and other marks are trademarks of SparkPeople, Inc. All Rights Reserved.
SPARKPEOPLE is a registered trademark of SparkPeople, Inc. in the United States, European Union, Canada, and Australia. All rights reserved.