Free trading calculators
Work out your size before you click buy, and what holding the position will cost. Every calculator runs in your browser and needs 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 calculatorFunding fee calculator
What holding a perpetual position costs you, or pays you, in funding.
Open the calculator
Sized it right? Now see if it paid.
Viktury imports your trades and shows each one in R.
Start free →No card · 14 days of Edge from first trades