Formula-based calculator library
calcoralab
Health and finance calculators built with deterministic formulas, clear assumptions, and educational explanations for everyday planning.
Calculator sections
Browse health and finance tools by topic. Each section groups calculators with related assumptions, limitations, and planning context.
Health Calculators
Formula-based tools for body composition, metabolism, fitness, pregnancy, and everyday health planning.
25 calculators
Open Health Calculators →Finance Calculators
Planning tools for loans, saving, investing, budgets, income, and business decisions.
25 calculators
Open Finance Calculators →Featured calculators
Start with common health and finance estimates, then review the assumptions and limits before using a result for planning.
BMI Calculator
Estimate body mass index from weight and height. Interpret the result as an educational screening estimate, not a diagnosis.
Open calculator →healthBMR Calculator
Estimate daily resting calorie needs. Interpret the result as an educational screening estimate, not a diagnosis.
Open calculator →healthTDEE Calculator
Estimate daily calorie needs after activity level. Interpret the result as an educational screening estimate, not a diagnosis.
Open calculator →healthIdeal Body Weight Calculator
Estimate adult ideal body weight from height and sex.
Open calculator →healthBody Fat Calculator
Estimate body fat percentage with a circumference formula.
Open calculator →healthLean Body Mass Calculator
Estimate lean body mass from height, weight, and sex.
Open calculator →