India, Oct. 2 -- Big goals need big money. A home, a child's degree and a calm retirement all cost lakhs. Most people know this, but few know how much to save each month.

An investment calculator can answer that question in minutes. It turns a vague wish into a clear number. This blog shows how to use it, step by step.

An investment calculator is a free online tool. You enter a few details. It shows what your money may grow to.

It can also work backwards. Enter your goal amount, and it shows how much to save each month. The result is an estimate. It is not a promise. Real returns can be higher or lower.

Keep these details ready:

Do this for each goal and check if the total fits your income.

Prices always increase every year, implyin...