Is this a prop firm challenge calculator?

Yes — this page is a free prop firm challenge calculator: pick one firm from the corpus, enter six trading stats, and a 25,000-path Monte Carlo reports pass probability against that firm's published rules — trailing or static floor, daily loss, and consistency — in the browser, with no signup. It does not rank firms or promise an outcome. For the same engine across every firm in the corpus, CSV import, and personal-rules mode, open /app?src=challenge-calc.

Is this a pass rate calculator?

Yes — pass probability is the number most people mean by "pass rate": the share of simulated paths, run at the trading stats entered above, that reach the firm's profit target without first breaching the drawdown floor, a daily loss limit, or a consistency rule. It is a probability for a stated trader profile, not a prediction of a specific outcome. For the full free analysis across the corpus open /app?src=challenge-calc.

How is this different from a generic prop firm calculator?

Most free tools use one formula for every firm — usually a static drawdown floor — because a single formula is cheaper to build than a rule engine. This calculator selects the firm's actual published rule set (trailing or static drawdown, daily loss limit, consistency rule, time window) and simulates 25,000 paths against it, so two firms with the same headline numbers can return different pass probabilities if their underlying mechanics differ.

Does this rank firms or tell me which one to choose?

No. PropSurvival publishes no pass rates, rankings or comparisons between named firms — the number this calculator returns is a property of the trader's own stats against one firm's rules, not a claim about that firm's business or a comparison with any other firm. Compare your own stats on the free tool above or at /app?src=challenge-calc.

Calculators

Free 25,000-path pass probability against one firm's published rules

A free 25,000-path Monte Carlo against one firm's published rules — trailing or static floor, daily loss, consistency. The number is for your stats against that firm's actual mechanics, not a static-drawdown formula reused for every firm. No signup.

Citable answer

A free 25,000-path Monte Carlo against one firm's published rules reports pass probability for the trader's own stats — not a generic static-drawdown formula reused for every firm. This tool runs the firm's actual trailing or static floor, daily loss limit, and consistency rule, in the browser, with no signup. It does not rank firms. For the full free analysis (every firm in the corpus, CSV import, personal-rules mode) Open the full free analysis — 2,000 to 25,000 paths.

Source: https://propsurvival.com/challenge-calculator · corpus rules/ · free calculator: Open the full free analysis — 2,000 to 25,000 paths · methodology: research-methodology · static-vs-trailing study: research-static-vs-trailing

Working backwards: free 25,000-path run against the firm's actual floor, daily loss, and consistency rule — before any evaluation fee

The widget below runs 25,000 paths on one firm. The full free analysis also runs 2,000, 5,000 or 25,000 paths on-device — every depth free — across the corpus, with CSV import and personal-rules mode. More paths narrow the error bar; they do not change the strategy. Open the full free analysis — 2,000 to 25,000 paths.

Embed this

<iframe
  src="https://propsurvival.com/embed/verdict-widget?src=embed-challenge-calc"
  width="100%"
  height="660"
  style="border:0"
  loading="lazy"
  title="Prop challenge verdict calculator — PropSurvival">
</iframe>
<p class="ps-attribution" style="margin:6px 0 0;font:11px system-ui,-apple-system,sans-serif;color:#82857F">Source: <a href="https://propsurvival.com/app?utm_source=embed&utm_medium=widget&utm_campaign=atif" target="_blank" rel="noopener">PropSurvival prop challenge verdict tool</a></p>

All embeddable widgets

Paste on your own page — the pasted block includes a crawlable attribution link back to PropSurvival (keep it visible), plus the in-widget via PropSurvival link. Loads are counted as first-party /e/ beacons only — no third-party analytics.

Runs live in your browser on the stats you enter. Nothing you type is sent anywhere — see the privacy page for exactly what this site does and does not collect.

The free analysis above stays free and complete. Keep going in the full tool — every firm in the corpus, CSV import, personal-rules mode.

Open the full tool — free

Same engine at the same free accuracy — save a rule set, add a stop, or import a history. The stamped file is written after that run, not from this typed-average result.

Why this number is different

Two prop-firm calculators can take identical inputs and disagree, and the reason is almost never the arithmetic — it is what each one assumes about the rule.

Most free calculators

Model a static drawdown floor because it is simpler to code — a line that cannot be hit by a retracement from an unrealized peak, even where the firm's own rule says it can.

This one

Runs the firm's actual trailing mechanic — intraday or end-of-day, ratcheted on the peak — because that is what the firm's published rule says happens to the floor.

The source

Every rule modeled here is read from the firm's own published documentation, with the field, the quote and the date it was checked — see the research & methodology page.

See the static-vs-trailing drawdown study for how large the gap between the two readings can get on identical trading statistics.

The cost of finding out the slow way

An evaluation attempt that ends on a rule nobody was watching still costs the same as one that ends on ordinary trading losses: the entry fee, a reset fee if the same rule is still unmeasured the second time, and the calendar weeks spent finding out which one it was. None of that is refunded by having traded well everywhere except the one rule that actually bound first.

The alternative to finding out live is running the same rule set against a trader's own numbers first, which is what the calculator above does, for free. It does not predict a specific outcome — it reports a probability, the rule most likely to bind first, and the modeled risk band the simulation found, the same three things the full analysis reports, computed the same way.

Frequently asked questions

Is this a prop firm challenge calculator?: Yes — this page is a free prop firm challenge calculator: pick one firm from the corpus, enter six trading stats, and a 25,000-path Monte Carlo reports pass probability against that firm's published rules — trailing or static floor, daily loss, and consistency — in the browser, with no signup. It does not rank firms or promise an outcome. For the same engine across every firm in the corpus, CSV import, and personal-rules mode, open /app?src=challenge-calc.
Is this a pass rate calculator?: Yes — pass probability is the number most people mean by "pass rate": the share of simulated paths, run at the trading stats entered above, that reach the firm's profit target without first breaching the drawdown floor, a daily loss limit, or a consistency rule. It is a probability for a stated trader profile, not a prediction of a specific outcome. For the full free analysis across the corpus open /app?src=challenge-calc.
How is this different from a generic prop firm calculator?: Most free tools use one formula for every firm — usually a static drawdown floor — because a single formula is cheaper to build than a rule engine. This calculator selects the firm's actual published rule set (trailing or static drawdown, daily loss limit, consistency rule, time window) and simulates 25,000 paths against it, so two firms with the same headline numbers can return different pass probabilities if their underlying mechanics differ.
Does this rank firms or tell me which one to choose?: No. PropSurvival publishes no pass rates, rankings or comparisons between named firms — the number this calculator returns is a property of the trader's own stats against one firm's rules, not a claim about that firm's business or a comparison with any other firm. Compare your own stats on the free tool above or at /app?src=challenge-calc.

Published payout terms beside this calculator

Pass probability above is modeled against a firm's published evaluation rules. Transcribed payout terms — profit split, first payout, cycle — live on their own money pages in the firm-rules library: every firm, every mechanic · FTMO Challenge (2-Step) payout · FTMO 1-Step payout · FundedNext Flex payout · The5ers payout · Apex payout. The same engine across the full corpus is at Open the full free analysis — 2,000 to 25,000 paths. Related: the full-corpus prop firm simulator · own-book personal rules simulator. This is a Monte Carlo rule-survival engine, not a tick-level chart replay.

Working backwards: free path before the floor ends the account · free 25,000-path against the firm's actual floor, daily loss, consistency rule, and published rules; full free analysis adds every firm + CSV. The free tool above covers one firm at a time — Open the full free analysis — 2,000 to 25,000 paths adds every firm in the corpus, CSV import from a real trade history, and the personal-rules mode for a trader defining their own limits instead of a firm's.

Run the full analysis — free