Approximate doubling time from an annual percent return, or the return needed to double in a set number of years, handy for savings and investing intuition.
The rule of 72 is a rough guide, not a promise. Banks and investments have different compounding schedules; use it to build intuition, not exact projections.
Reward-to-risk from entry, stop, and target.
Units and notional from account risk and stop distance.
Dollar and percent P/L for long or short.
Average $ per trade from wins, losses, and sizes.
Full, half, and quarter Kelly from edge estimates.
Growth with APR, time, and optional monthly savings.
Project nest egg from savings, years, and return.