Whether you're a woman trying to understand how much your daily walks actually contribute or a man calibrating your activity level against your calorie targets, knowing what you burn matters more than most fitness advice admits. Use this free calculator for any activity, then read below for how NEAT — your non-exercise movement — is often the biggest variable of all after 40.
Estimate how many calories you burn during walking, running, HIIT, strength training, and everyday activities. Enter your weight and duration for a personalized calorie burn estimate.
💡 This tool provides estimates as a guide. Individual results may vary.
Quick Answer
Calories burned depend on your weight, the activity, and how long you do it. For example, a 170 lb person burns roughly 250–350 calories walking briskly for 60 minutes, 400–600 calories jogging for 45 minutes, or 300–500 calories doing a 30-minute HIIT session. Use the calculator below to get a personalized estimate for your weight and activity.
Understanding how many calories you burn during exercise helps you make informed decisions about nutrition and activity. Many people overestimate how much they burn during workouts and eat back more than they actually burned, which can stall fat loss. On the flip side, some people undereat because they don't realize how active they actually are.
For busy professionals and parents, this calories burned calculator helps you value all types of movement—not just gym workouts. Playing with kids, taking the stairs at work, doing yard work, or walking meetings all burn calories. Every bit adds up.
This calculator uses MET values (Metabolic Equivalent of Task)—a standard measure used by exercise scientists to estimate calorie burn. The formula is:
Calories Burned = MET × 3.5 × Weight (kg) / 200 × Minutes
Calorie burn depends on three key factors:
These are estimates—individual metabolism varies by 10–20%. Use these numbers as rough guides, not gospel. If you're losing weight consistently, your overall energy balance is right, regardless of exact calorie burn estimates.
Use this calorie burn calculator to:
Don't obsess over burning a specific number. Focus on consistent activity you enjoy and can sustain long-term. The best exercise is the one you'll actually do regularly.
How many calories does walking burn?
Walking burns roughly 3–5 calories per minute depending on your weight and pace. A 170 lb person burns about 250–350 calories per hour of brisk walking (3.5–4 mph). Casual walking burns slightly less at around 200–280 calories per hour. Walking is one of the most sustainable calorie-burning activities for busy adults.
How many calories does running burn?
Running burns about 8–14 calories per minute depending on your weight and speed. A 170 lb person jogging at a moderate pace burns approximately 400–600 calories in 45 minutes. Running burns roughly 2–3x more calories per minute than walking, but walking is more sustainable for most people over 35.
How accurate are calories burned calculators?
Calorie burn calculators provide estimates within 15–20% accuracy. They use MET values (Metabolic Equivalent of Task) multiplied by your weight and duration. Individual factors like fitness level, muscle mass, and genetics affect actual burn. Use these numbers as rough guides for planning, not exact figures.
Should I eat back the calories I burn during exercise?
It depends on your goal. If you're trying to lose fat, don't eat back all the calories you burn—most trackers and calculators overestimate by 20–30%. If you're maintaining weight or building muscle, eating back 50–75% of exercise calories can help fuel recovery without overeating.
Why does my fitness tracker show different numbers?
All methods estimate calorie burn—none are perfect. Wrist-based fitness trackers often overestimate calorie burn by 20–40% compared to lab measurements. Heart rate-based estimates can also be thrown off by caffeine, stress, or medications. Use trends over weeks, not single workout numbers.
What exercise burns the most calories?
High-intensity activities burn the most calories per minute: HIIT (10–16 cal/min), running (8–14 cal/min), jump rope (10–15 cal/min), rowing (8–12 cal/min), and cycling at vigorous pace (8–12 cal/min). However, the best exercise is one you'll actually do consistently. A moderate walk you do 5x/week beats an intense workout you do once.
How many calories do you burn in a day without exercise?
Your body burns calories just by existing—this is your Basal Metabolic Rate (BMR). Most adults burn 1,400–2,000 calories per day at rest. Add in NEAT (non-exercise activity like fidgeting, walking around the house, standing) and you're looking at 1,800–2,500 calories before any formal exercise.
Does strength training burn more calories than cardio?
During the workout, cardio typically burns more calories per minute than strength training. However, strength training builds muscle, which increases your resting metabolic rate. Over time, having more muscle means you burn more calories 24/7—even sleeping. For busy adults over 35, a combination of both is ideal.
Download our free fitness guide designed for adults over 40
These tools give you the basics. For a complete workout and nutrition plan tailored specifically to your goals and constraints, check out our personalized options.