People like calculators and visuals for planning. For those wanting to try to figure out how much Bitcoin they will need, you can reverse out from converting the fiat equivalent along the way.
Take for example this calculator
https://www.nerdwallet.com/calculator/retirement-calculator
For a hypothetical 25 year old that wants to retire at age 50, plug in these values...
* Age: 25
* Pre-tax income: 500,000 (no, you aren't expected to be earning this, but another field depends on this field, so just set it high. we ignore it otherwise)
* Current Retirement Savings: 0
* Monthly Contribution: 1055
* Monthly Budget in Retirement: 12935
* Other retirement income: 0 (dont rely on social security, pensions, etc)
Expand advanced details and plug in the following
* Retirement age: 50
* Life Expectancy: 95
* Pre-retirement rate of return: 15% (this isn't tradfi, and we'll assume this as our low CAGR for Bitcoin appreciation in fiat terms)
* Post-retirement rate of return: 15%
* Inflation rate: 3%
* Annual income increase: 0 (yes, super conservative)
This should produce a chart that looks something like the following
Now, begin tweaking the individual inputs to get a better feel for your personal situation. The key takeaways and notes here are as follows...
1) The earlier you begin saving, the better.
2) Stack hard, rediculously hard, the earlier you can, as compounded will pay off much better then a gradual DCA.
3) To clarify point #2, you need to be making sacrifices. Invest any tax refunds, bonuses, windfalls as a lump sum buy. Limit frivolous purchases. It's not the $5 coffees. Its the outsized purchases (new cars, leases, bigger then necessary housing in high tax districts) that will eat up your savings potential.
4) The amount invested each month in the chart should be to buy Bitcoin building your stack. Whatever amount of bitcoin you can get.
5) This assumes you are eventually spending your Bitcoin. If you plan to never spend your bitcoin you could get a loan against it, assuming you have some other cash flow coming in to service the loan.
6) The older you are when you first start saving, the harder it is to get to your goal amount.
Here's a common diagram denoting the importance of starting early.
