About Utility & Health Tools
Calculent's utility and health tools solve practical everyday calculations. From computing your exact legal age with government scheme eligibility thresholds (senior citizen benefits at 60, super senior at 80) to auditing your home's electricity consumption appliance-by-appliance — these tools eliminate arithmetic errors and save time. Health tools use validated scientific formulas (Mifflin-St Jeor for BMR, WHO BMI classifications, TDEE activity multipliers) to give clinically-grounded estimates.
Health & Fitness Calculators
Everyday Utility Tools
Frequently Asked Questions
What is the difference between BMR and TDEE?
BMR (Basal Metabolic Rate) is the calories your body burns at complete rest to sustain organ function. TDEE (Total Daily Energy Expenditure) multiplies BMR by your activity level: sedentary (×1.2), lightly active (×1.375), moderately active (×1.55), very active (×1.725). TDEE is your true daily calorie maintenance — eat below it to lose weight, above to gain.
How do I calculate my electricity bill before it arrives?
Use the Electricity Bill Calculator: enter each appliance's wattage and daily hours of use. The tool computes kWh per month and applies your state's slab tariff. For most households, a 1.5-ton 3-star AC running 8 hours/day alone contributes ₹1,500–2,500 to the monthly bill. The calculator breaks this down appliance by appliance.
At what age do senior citizen benefits apply in India?
Senior citizen classification starts at age 60: higher FD rates, Section 80TTB deduction (₹50,000 on FD interest), railway concessions, and higher income tax exemption. Super Senior Citizen status begins at 80 with a basic exemption of ₹5L under the old tax regime. The Age Calculator tracks exactly when you cross each legal threshold.