Position size
Risk a fixed percentage, get the lot size
Lot size
Standard, mini and micro lots by instrument
Pip value
What a pip is worth on your account currency
Risk / reward
Break-even win rate for any R:R
Margin
Margin required at your leverage
Compounding
Where a steady monthly return actually lands
Why these six
Every one of them answers a question that costs money when it is guessed. What size should this trade be. What is a pip worth on gold. Do I actually need a 45% win rate for this to work. How much of the account is already tied up.
They are free and they stay free. The paid product is the part that watches these numbers on every trade you place, live, and tells you when you are about to break your own rules — which is a different problem from working the number out once.
Check them against your broker. Contract sizes, pip sizes and leverage vary, especially on indices and crypto. In MetaTrader: right-click a symbol → Specification. Every one of these pages lets you type over the defaults.