Health Calculators
Calorie Calculator
Use this calculator to estimate daily maintenance calories for general planning. It is not medical advice.
Enter the weight using the unit shown in the label.
Enter the height using the unit shown in the label.
Enter the person’s age for this calculation.
Used only for the BMR formula constant. Male uses +5 and female uses −161 in this calculator.
This scales BMR for daily movement. Choose the closest typical day: about 1.2 mostly seated, 1.55 moderate activity, or 1.9 very active.
Controls rounding in the displayed result only; it does not change the underlying calculation.
Formula
Worked example
An 80 kg, 180 cm, 35-year-old male with a 1.55 activity factor has estimated maintenance calories of about 2,755 per day.
How to use this calculator
Start with realistic inputs, run more than one scenario, and compare the result with nearby calculators in the same topic cluster. This makes the page useful for both a quick answer and a deeper planning workflow.
For important financial, health, construction or employment decisions, treat the output as a planning estimate rather than a final professional assessment.
Accuracy note
CalculatorWorks explains formulas and assumptions so results are easier to review. Inputs, rounding, local rules, fees and personal circumstances can change real outcomes.
Expanded Educational Guide
CalculatorWorks aims to provide more than quick answers by helping users understand the concepts behind each calculation and compare multiple real-world scenarios.
Why compare multiple examples?
Small changes to rates, repayment periods, percentages, calorie targets, or contribution amounts can significantly change long-term outcomes.
How should these results be used?
These estimates are useful planning tools and educational references. Actual outcomes may vary depending on lenders, taxation rules, nutrition goals, market conditions, and individual circumstances.
Related Planning Topics
Users often combine these tools with budgeting, savings, tax, investment, health, and financial planning calculators to build a broader understanding of long-term outcomes.