Free prop firm lot size calculator with verified rules for FTMO, FundedNext, The5ers, Funding Pips & 20+ funded accounts. Enter your account size, risk % and stop loss — get your position size, margin and daily limit headroom instantly.
| Firm | Daily Loss | Max DD | Leverage | Split |
|---|---|---|---|---|
| FTMO | 5% | 10% | 1:100 | 90% |
| FundedNext | 5% | 10% | 1:100 | 95% |
| The5ers ⭐ | 4% | 8% | 1:30 | 100% |
| Funding Pips | 4% | 8% | 1:100 | 100% |
| E8 Markets | 5% | 8% | 1:50 | 100% |
| Goat Funded 🔥 | 4% | 6% | 1:200 | 80% |
| FXIFY | 5% | 10% | 1:100 | 90% |
| Alpha Capital | 4% | 8% | 1:100 | 80% |
| Blue Guardian | 3% | 6% | 1:100 | 85% |
| Maven | 4% | 8% | 1:100 | 80% |
| Blueberry Funded | None | 5% | 1:30 | 90% |
| TopStep 🔵 | 4% | Trailing | Futures | 100% |
| Apex Trader 🔵 | Trailing | Trailing | Futures | 100% |
| Instrument | Pip Value / lot | Contract | Notional / lot | Spread |
|---|
PropRisk.co is a free prop firm calculator built for funded traders. Every firm's daily loss limit, leverage and drawdown rules are verified directly from official prop firm websites — not copied from third-party sources. We update rules whenever firms announce changes.
All leverage ratios, daily loss limits and max drawdown percentages are sourced from each firm's official trading objectives page. Last verified April 2026. Found an error? Contact us with the official source and we'll update within 24 hours.
Common questions from funded traders — answered clearly.
A prop firm lot size calculator determines how many lots to trade on a funded account based on your account balance, risk percentage, stop loss in pips, and the prop firm's specific leverage and daily loss limit rules.
The formula is: Lot Size = (Account Balance × Risk%) ÷ (Stop Loss Pips × Pip Value per Lot). Leverage affects required margin and maximum tradeable lots, but does not change the risk-based lot size itself.
For FTMO on a $10,000 account: 1% risk = $100 risk amount. With a 20-pip stop on EUR/USD (pip value $10/lot): $100 ÷ (20 × $10) = 0.50 lots.
FTMO uses 1:100 leverage on FX pairs, a 5% daily loss limit ($500 on a $10k account), and a 10% maximum drawdown ($1,000). Never risk more than 30% of your daily allowance on a single trade.
No. Leverage does not change the risk-based lot size. A trader at The5ers (1:30) and FTMO (1:100) with a $10,000 account, 1% risk, 20-pip stop on EUR/USD both get exactly 0.50 lots.
What leverage does change is the required margin per lot and the maximum lots you can hold. At 1:30, each standard lot requires $3,333 margin vs $1,000 at 1:100 — so always check your available margin before entering.
Gold has 1 standard lot = 100 troy ounces. At ~$3,200/oz, one lot has a notional value of $320,000. The pip value is approximately $100 per lot (since 1 pip = $1 price move × 100 oz).
Formula: Risk Amount ÷ (Stop Loss points × $100). Example: $100 risk with a 10-point stop = $100 ÷ (10 × $100) = 0.10 lots. Most calculators get gold wrong by using the forex contract size — always use the correct 100 oz contract.
FTMO's daily loss limit is 5% of the initial account balance, calculated from both closed and floating (unrealized) losses. It resets daily at midnight CET.
On a $100,000 account: daily limit = $5,000. If your open positions show a $5,000 floating loss at any point during the day, you have reached the limit — even if no trades are closed. This is why most traders risk only 0.5–1% per trade.
The5ers uses 1:30 leverage because they operate a real-capital model — you are managing actual money, not simulated funds. This is lower than most prop firms (which offer 1:100).
Lower leverage means higher margin per lot: a standard EUR/USD lot requires ~$3,333 margin at 1:30 vs $1,000 at 1:100. Your lot size formula stays the same, but you must have more free margin available before entering the trade.
Goat Funded Trader offers the highest leverage in the prop firm industry at 1:200 on forex pairs. A $10,000 account can control up to $2,000,000 in notional value.
However, their daily loss limit is 4% and max drawdown is 6% — so high leverage must still be managed with strict risk control. Never use maximum leverage just because it is available.
Risk of ruin is the probability that your account hits the maximum drawdown limit before reaching the profit target. Formula: RoR = ((1 − Win Rate) ÷ Win Rate) ^ (Max DD% ÷ Risk per Trade%).
Example: 55% win rate, 1.5 R:R, 1% risk, 10% max drawdown ≈ 4% risk of ruin. Most prop traders aim for a risk of ruin below 5%. Use the Survival Calculator tab above to test your own numbers.
Most successful prop firm traders risk 0.5% to 1% per trade during challenge phases. At 1% risk on a firm with a 10% max drawdown, you can survive 10 consecutive losses before failing.
At 0.5% risk you can absorb 20 losses. Reducing risk per trade is the single most effective way to improve your probability of passing and keeping your funded account.
The standard prop firm lot size formula is: Lot Size = (Account Balance × Risk%) ÷ (Stop Loss Pips × Pip Value per Lot).
For EUR/USD on a $10,000 funded account risking 1% with a 20-pip stop: $100 ÷ (20 × $10) = 0.50 lots. For gold (XAUUSD), replace pip value with $100 per lot since gold has a 100 oz contract. Use the PropRisk.co lot size calculator to get the result instantly without manual calculation.
Your lot size should always be determined by your risk percentage and stop loss distance — never by feel. For challenge accounts, most experienced traders use 0.5% to 1% risk per trade, which means different lot sizes on every trade depending on where the stop is placed.
At 1% risk on a $10,000 FTMO challenge with a 20-pip stop on EUR/USD, the correct lot size is 0.50 lots. At 50 pips stop, the correct lot size is 0.20 lots. Keeping risk % fixed and varying lot size is what separates consistently funded traders from those who fail challenges.
Blueberry Funded is the most notable prop firm with no daily loss limit on their instant funding programme. They only enforce a 5% total maximum drawdown.
This gives traders more flexibility during volatile sessions. However, the absence of a daily limit means a single bad day can consume a large portion of your entire drawdown allowance — so total exposure management becomes even more critical.
In-depth guides on lot sizing, drawdown rules and risk management for funded traders.
The exact formula used by professional funded traders. Covers FTMO, FundedNext, The5ers, Funding Pips and 20+ prop firms with worked examples.
FTMO's 5% daily loss limit and 1:100 leverage explained with real examples. How to avoid the most common sizing mistake that fails challenges.
Gold uses a 100 oz contract, not 100,000 units. Here's exactly how to calculate the correct lot size and required margin for gold on any prop firm.
The 5 most common position sizing errors that fail funded accounts — and the exact process successful traders use to size every trade correctly.
Daily loss limits vs trailing drawdown explained. How to track your drawdown in real time and avoid the limit breaches that fail funded accounts.
Use the survival calculator to find out your risk of ruin, profit factor and expected value before you trade a single cent of funded capital.