Free prop firm calculators
Instant, ungated calculators for the rules that actually blow accounts. No signup, no email, no trial. Every result has a shareable link so you can send someone their exact numbers.
Where does your account actually get liquidated? Enter your peak and current balance and see the breach line, your remaining room, and whether the trail has locked. Presets for 20 firms.
Position sizing, risk of ruin, and a consistency-rule checker are next. Want one sooner? The full simulator already covers all of them.
See the full simulator →These free calculators answer the questions traders ask most before buying a prop firm challenge: where the drawdown line sits, how much to risk on each trade, and how fast a losing streak can end an account. Each one works with custom rules, so you can model any firm, and results can be shared by link.
Every calculator runs in your browser, needs no email, and keeps its inputs in the page address, so the link you copy reproduces the exact same result for anyone who opens it. That makes it easy to check a trade plan with a friend, a mentor or a trading community before you commit money to a new evaluation.
The calculators are single-purpose. When you want every rule combined with your own trading statistics — pass probability, payout odds and expected profit per challenge — use the full simulator.
| Question | Tool |
|---|---|
| Where is my drawdown line? | Trailing drawdown calculator |
| What is my breach line on a given firm and size? | Drawdown by account size |
| What are my odds of passing and getting paid? | Full simulator |
| What does a rule term mean? | Prop firm glossary |
Frequently asked questions
Are the calculators free?
Yes. Every calculator on this page is free and works without an account.
Do the calculators use real firm rules?
You can enter any custom rules. Presets are offered only for firms whose rules we have checked against their official pages.
What is the difference between a calculator and the simulator?
A calculator answers one question, such as where your drawdown line sits. The simulator combines every rule with your trading statistics to estimate pass and payout probability.
Test your own numbers in the prop firm simulator.