Your Financial
Calculator Suite

10 free, instant calculators — no login, no ads, 100% client-side. Built for India 🇮🇳

10
Free Calculators
₹ 0
Cost to Use
4
Categories
∞
Calculations
All Calculators

💬 Frequently Asked Questions

EMI uses the formula: P × r × (1+r)ⁿ / ((1+r)ⁿ − 1), where P = principal, r = monthly interest rate (annual rate ÷ 12 ÷ 100), and n = total months. Our calculator handles 0% interest as a special edge case too.
Financial advisors typically recommend saving at least 20% of your monthly income (the 50-30-20 rule: 50% needs, 30% wants, 20% savings). A savings ratio above 30% is considered excellent and accelerates wealth-building significantly.
Salaried employees should target 3–6 months of expenses. Self-employed individuals and freelancers should keep 6–12 months. If you have dependents, a medical condition, or a single income household, aim for the higher end of the range.
With central government subsidies (40% for up to 3 kW) and KSEB's net metering scheme, a 3 kW rooftop solar system in Kerala typically costs ₹1.17 lakh after subsidy. At average savings of ₹1,500–₹2,000/month, the payback period is 5–7 years.
For daily commuters covering 800–1,500+ km/month, EVs save ₹2,000–₹5,000/month versus petrol at ₹6/kWh electricity. With home solar charging at ₹1–₹2/kWh effective cost, the savings are even greater. The break-even on the higher EV purchase price is typically 3–5 years.