All calculators
25 decision tools, built for Indian homes. Free forever, no signup, no spam calls.
Solar
Solar calculators
Solar Savings Calculator
Bill in, savings out: system size, subsidy, net cost and payback
Calculate nowPM Surya Ghar Subsidy Calculator
Exact central + state subsidy for your state and system size
Calculate nowSolar Loan EMI Calculator
Is the EMI smaller than your current electricity bill?
Calculate nowBattery Backup Calculator
Pick appliances and backup hours, get the battery size you need
Calculate nowSolar Water Heater Size Calculator
Litres per day for your family, and savings vs an electric geyser
Calculate nowBaby Gear
Baby Gear calculators
Car Seat Finder by Age & Weight
Rear-facing, forward or booster: what is safe for your child right now
Calculate nowStroller Finder Quiz
Four questions to the right stroller for your roads and boot space
Calculate nowFirst Year Cost Calculator
What the first year really costs, itemised by budget style
Calculate nowDiaper Cost Calculator
Monthly diaper spend by brand and age, cloth vs disposable
Calculate nowWater Purifiers
Water Purifiers calculators
Purifier Finder by City
Your city's TDS decides RO vs UV vs UF - get matched models
Calculate nowBottled Water vs Purifier Calculator
See in how many months a purifier pays for itself
Calculate now5-Year True Cost Calculator
Price plus filters plus AMC: the real cost, which re-ranks everything
Calculate nowAir Purifier Room Size Calculator
Room size and city AQI to the CADR you actually need
Calculate nowAppliances
Appliances calculators
AC Tonnage Calculator
Room size, floor and city to the right tonnage
Calculate now3-Star vs 5-Star AC Calculator
Is the 5-star premium worth it for your usage? Exact breakeven
Calculate nowHome Electricity Bill Estimator
Tick your appliances, see your expected monthly bill
Calculate nowGeyser Size Calculator
Family size to litres, instant vs storage
Calculate nowBLDC Fan Savings Calculator
What switching your fans saves per year
Calculate nowMattresses
Mattresses calculators
Tyres
Tyres calculators
Tyre Finder by Car
Your car and variant to the exact size and every tyre that fits
Calculate nowTyre Size Decoder
What 195/55 R16 87V actually means, number by number
Calculate nowUpsize Calculator
Bigger rims? Get the correct new size and the speedo error
Calculate nowTyre Age Checker
Decode the DOT code and know when to replace
Calculate now