Free trading calculators
Work out your size before you click buy. Both calculators include fees, run in your browser and need no account.
Position size calculator
How big to go so that a stopped-out trade loses exactly what you planned, fees included.
Open the calculatorScale-in calculator
You already hold a position. How much can you add at the new price, with one stop for the whole thing?
Open the calculator
Sized it right? Now see if it paid.
Viktury imports your trades and shows each one in R, with fees and funding taken out.
Start free →No card · 14 days of Edge from first trades