Last updated: May 5, 2026
NumberTruth provides calculators and converters for educational and informational purposes only. The results are not professional advice and should not be used as a substitute for consultation with a qualified professional in the relevant field.
Health, fitness, and nutrition
BMI, BMR, TDEE, body fat estimates, ideal body weight, lean body mass, protein and water needs, pregnancy due dates, calorie estimates, and any other health-related calculator on this site provide general estimates derived from published formulas. They are not medical advice and not a substitute for evaluation by a qualified healthcare professional. Consult a doctor, registered dietitian, or other clinician before making decisions about diet, exercise, pregnancy care, weight management, or treatment.
Financial calculations
Mortgage payment, affordability, ROI, depreciation, sales tax, real estate, and other financial calculators rely on standard formulas and simplifying assumptions that may not match your specific situation. Tax laws, lending rules, fees, and market conditions vary by jurisdiction and over time. Consult a licensed financial advisor, accountant, attorney, or mortgage professional before making investment, lending, business, or tax decisions.
Construction, DIY, and engineering
Paint coverage, concrete volume, tile, lumber, stair, roof pitch, electrical, and other construction or engineering calculators compute idealized values from the dimensions you provide. Real-world conditions, materials, building codes, and safety requirements vary. Verify any result against your local building code and consult a licensed engineer, contractor, or other qualified professional for any actual project.
Accuracy
We aim for correct formulas and reasonable defaults, but make no guarantee that any calculator is free of bugs, suitable for any particular purpose, or applicable to any specific situation. Inputs and outputs are interpreted in standard SI or US customary units unless explicitly stated otherwise on the calculator.
No warranty
NumberTruth is provided "as is" without warranty of any kind, express or implied. By using this site you acknowledge that you alone are responsible for verifying any result that affects a real-world decision.
Limitation of liability
To the fullest extent permitted by law, NumberTruth and its operator are not liable for any direct, indirect, incidental, consequential, or special damages arising from use of this site, including but not limited to financial losses, health outcomes, or property damage related to decisions made on the basis of the calculators provided here.