Practical Guides for Every Calculation
Our Guides section answers the why behind every calculator — from understanding how GST is structured before you compute it, to knowing what XIRR means before you trust your SIP return figure.
Finance & Tax Guides for India
Our India-focused finance guides cover GST, EMI, SIP, PPF, HRA, TDS, tax deductions, NPS vs EPF, income tax regimes, CIBIL scores, gratuity, and FIRE planning with real INR examples and India-specific context that generic global guides miss.
Developer & Technical Reference
Understand Unix timestamps, JWT authentication, Base64 encoding, cron expressions, API rate limiting, OAuth 2.0, webhooks, HTTP status codes, CORS, and database design with clear explanations, code examples in JavaScript and Python, and links to the tools that do the work for you.
Health, Fitness & Medical Guides
From BMI and body fat percentage to sleep debt, VO2 max, blood pressure, and pregnancy due dates — every guide gives you the formula, the edge cases, and the practical context so you can interpret calculator results with confidence.
Home & Interior Design Planning
Plan your home projects with confidence: flooring cost estimation, paint quantity calculations, Vastu principles, and home renovation budgeting — with India-specific rates, cost breakdowns, and step-by-step guidance.
How These Guides Work
- Every guide links directly to the relevant free calculator tool.
- Real examples with actual numbers — no abstract theory.
- India-specific context for finance and health topics.
- Updated to reflect current tax regimes, GST slabs, and regulations.