Calculators

Estimates the exercise intensity level above which anaerobic metabolism significantly increases.

Calculates resting heart rate or determines heart rate from pulse counts.

Converts a number of steps into an approximate distance in kilometers.

Estimates calories burned while shoveling snow based on weight and shoveling time.

Calculates the weight of an object on different planets based on their gravitational acceleration.

Calculates the net force acting on an object by summing the individual forces in each direction.

Calculates the force of attraction between two objects with mass using Newton's Law of Universal Gravitation.

Performs the difference between two numbers.

Converts dosages between different opioid medications based on equianalgesic ratios. This calculator is for informational purposes only and does not constitute medical advice. Always consult with a healthcare professional for dosage adjustments.

Determines heart rate from an electrocardiogram (ECG) strip by measuring the number of large squares between R waves.