Free Tool
Swimming Calorie Calculator | Calories Burned Swimming
Calculate calories burned swimming by stroke, duration, and intensity.
Built by an engineer who chases finish lines and is obsessed with data. Thomas Prommer — technology executive who has worked with Google, Apple, Nike, Adidas, Netflix and other global brands. Also an Ironman finisher, HYROX Pro Division competitor, and marathon runner. These tools combine engineering rigor with real race experience.
Swimming Calorie Calculator
Estimate calories burned swimming based on weight, duration, and stroke intensity.
Methodology
MET values: backstroke 4.8, moderate freestyle 7.0, vigorous butterfly 10.0. Calories = MET x weight(kg) x hours. Swimming is a full-body exercise engaging all major muscle groups.
FAQ
How many calories does swimming burn?
A 70 kg person burns 350-700 calories/hour depending on stroke and intensity.
Which swimming stroke burns the most?
Butterfly burns the most (~10 MET), followed by freestyle (~7 MET), backstroke (~5 MET), and breaststroke (~6 MET).
Is swimming good for weight loss?
Yes. Swimming is low-impact, burns significant calories, and engages the whole body.
Does cold water increase calorie burn?
Slightly. Your body burns extra calories maintaining core temperature in cold water.