Calories Burned Calculator

Introduction:

Have you ever finished a workout or even a long day of chores and wondered “How many calories did I just burn?” While smartwatches and apps try to give estimates, they are often inconsistent. That’s where this calculator comes in—it gives you a quick, research-based estimate of calories burned for hundreds of daily activities and exercises.

Because every body is unique, the result is only an estimate, but it shows how your weight, workout time, and activity intensity affect your calorie expenditure. Whether your goal is weight loss, maintenance, or muscle gain, knowing how many calories you burn is an important step.

How to Use the Calculator

Using this tool is simple:

Select your activity (e.g., running, cycling, yoga, walking).
Enter your body weight (in kilograms or pounds).
Enter the duration of your activity (in minutes).
Click Calculate to see the estimated calories burned.

Factors That Affect Calories Burned:

1. Body Weight and Duration

A heavier person burns more calories, even at rest.
Longer workouts burn more calories, but the intensity of the exercise makes the biggest difference.

2. Exercise Intensity

Higher intensity = more calories burned.

For example:

Walking slowly → around 2 MET (light effort)
Playing doubles tennis → around 5 MET (moderate effort)
Jumping rope fast → around 11 MET (vigorous effort)

3. Other Factors

Age – older people burn fewer calories due to lower muscle mass.
Body composition – more muscle means higher calorie burn.
Fitness level – fitter people use energy more efficiently.
Temperature – slightly higher burn in hot environments.
Diet and sleep – poor habits can slow metabolism.

How Calories Are Calculated:

This calculator uses a standard formula:

Calories burned = (Time in minutes × MET × Body weight in kg) ÷ 200

Example:

Activity: Running at 8 MET
Weight: 70 kg
Duration: 30 minutes

Calories burned = (30 × 8 × 70) ÷ 200 = 840 calories

Accuracy of Results:

MET values are averages based on a 70 kg (154 lb) healthy adult.
Real calorie burn varies by age, muscle mass, health, and efficiency.
Activities with frequent breaks (like tennis or basketball) may overestimate calorie burn.

While exact numbers require lab testing, this calculator gives a reliable everyday estimate and a good idea of workout intensity.

Final Note:

This calculator is more than just numbers—it’s a tool to help you understand your body better. Use it to plan workouts, track progress, and balance your calorie intake with activity for weight loss, muscle gain, or maintenance. For a complete picture of your fitness, pair it with our Calorie Calculator and BMR Calculator.

Related Calculators:
BMR & Calorie Calculator, Calorie Calculator
External Resources:
Calories Burned Calculator on Calculator.net

What is the density of water?

The density of water is approximately $1 g/cm^{3}$ (or $1000 kg/m^{3}$ ). This is a standard reference point in many scientific calculations. Water is unique because its density is slightly lower in its solid state (ice) than its liquid state, which is why ice floats.

How do I find the density of an irregular object?

To find the density of an irregular object (like a rock), you first measure its mass ( $m$ ) using a scale. Then, you find its volume ( $V$ ) using the water displacement method (Archimedes’ Principle). Once both values are known, use our calculator to divide the mass by the volume to get the density: $ρ = m / V$ .

Why is kg/m 3 the preferred density unit?

Kilograms per cubic meter ( $kg/m^{3}$ ) is the official SI unit (International System of Units) for density. While $g/cm^{3}$ is often easier to use in chemistry, $kg/m^{3}$ is used globally as the base unit for physics and engineering, ensuring consistency across scientific data.

How does temperature affect the density of most substances?

For most substances, density decreases as temperature increases. This is because as a material heats up, its volume ( $V$ ) expands while its mass ( $m$ ) remains constant, leading to a lower density ( $ρ = m / V$ ). Water is a notable exception to this rule, as it reaches its maximum density at approximately $4^{\circ} C$ .

What is the difference between mass and weight?

This is a common point of confusion! Mass ( $m$ ) is the amount of matter in an object and remains constant regardless of location (e.g., on Earth or the Moon). Weight is the force of gravity acting on that mass ( $W = m \times g$ ). Our density calculator uses the object’s mass ( $m$ ) for all calculations.