Scientific & Financial References
The Foundation of Our Calculators
At CalcZoon, we are committed to providing accurate and reliable tools. Our calculators are built upon established, peer-reviewed scientific research and standard financial formulas. Below is a list of the primary sources and formulas that power our calculators.
TDEE & BMR Calculators
Mifflin-St Jeor Formula
"Mifflin, M. D., St Jeor, S. T., Hill, L. A., Scott, B. J., Daugherty, S. A., & Koh, Y. O. (1990). A new predictive equation for resting energy expenditure in healthy individuals. The American journal of clinical nutrition, 51(2), 241-247."
View SourceRevised Harris-Benedict Formula
"Roza, A. M., & Shizgal, H. M. (1984). The Harris Benedict equation reevaluated: resting energy requirements and the body cell mass. The American journal of clinical nutrition, 40(1), 168-182."
View SourceKatch-McArdle Formula
"Katch, F. I., & McArdle, W. D. (1973). Prediction of body density from simple anthropometric measurements in college-age men and women. Human biology, 45(3), 445-454."
View SourceBMI Calculator
Body Mass Index (BMI)
"World Health Organization. (2024). Body mass index - BMI. WHO.int."
View SourceLoan & Interest Calculators
Compound Interest
"Standard financial formula for calculating compound interest over time."
View SourceLoan Amortization (Annuity Formula)
"Standard formula for calculating fixed periodic payments for an amortizing loan."
View Source