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Smart CalcZone

All calculators

Health, maths, construction and e-commerce — pick one and get an answer as you type.

Health Calculators

BMI With Asian BMI ranges
Calories Daily calorie needs (TDEE)
Body fat Body fat percentage
Ideal weight Healthy weight for your height
Due date Pregnancy due date and week
Ovulation Fertile window by cycle
Water intake How much water a day

Maths Calculators

Percentage % of, % change, increase
Age Exact age in years, days
Fractions Add, subtract, simplify
Average Mean, median and mode
Ratio Simplify and scale ratios
LCM & HCF With prime factor steps
Compound interest Simple and compound

Construction Calculators

Brick Bricks for any wall
Concrete Slab, beam and column
Land area Sq ft, gaj, bigha, acre
Tiles Tiles and boxes needed
Paint Litres for walls and rooms
Steel weight Rebar weight by diameter
House cost Construction cost in ₹

E-commerce Calculators

Amazon profit Fees, GST and margin
Flipkart profit Commission and fees
Meesho profit Price, returns and margin
Profit margin Margin and markup
GST Add or remove GST