About us

MJDKDS is a small, family-run project from India. We build free calculators for money and health, a mutual fund explorer, and travel guides for places across India. The name comes from the initials of our family, and the logo has one petal for each person with a ring for the family name.

How we calculate

Every calculator page shows its formula, the assumptions and a worked example. Our calculators run in your browser, so the numbers you type never leave your device. Results are estimates for planning, not financial, tax or medical advice.

Where our data comes from

• Mutual fund NAVs: AMFI (latest NAV) and mfapi.in (NAV history).
• Places: Wikidata for names, states and coordinates, and NASA POWER climate data to estimate the best months to visit.
• Tax slabs and rates: published government rules, with the review date shown on each page.

What we are not

We are not a SEBI-registered adviser, a chartered accountant or a doctor. Please speak to a qualified professional before making financial, tax or health decisions.

Corrections and contact

Found a mistake? Email [email protected] and we will review it. Last reviewed 7 November 2026.