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Tools & Calculators
The Best Free Trading Calculators for Prop Firm Traders in 2026
6 min read
April 2026
Most trading calculators are built for retail traders. They calculate lot sizes and pip values, but don't address the specific constraints of funded trading: daily loss limits, challenge timelines, drawdown recovery math, and consistency rules.
We built 14 calculators specifically for prop firm traders. All free, no signup required, and designed around the rules that actually determine whether you pass or fail.
Challenge Planning
Before you start trading a challenge, model the outcome. These calculators help you decide whether a challenge is worth taking and plan your approach.
Prop Firm Planner
Map out your entire challenge timeline. Input your target, account size, daily risk, and win rate. See a day-by-day projection of balance, drawdown, and probability of passing.
Best for: Planning before you start a challenge
Challenge EV Calculator
Calculate the expected value of taking a prop firm challenge. Factors in the cost of the challenge, your estimated pass rate, expected funded payout, and profit split to determine whether the challenge is a positive or negative EV bet.
Best for: Deciding whether a specific challenge is worth the fee
Prop Firm Comparison
Side-by-side comparison of rules across major prop firms. Compare drawdown limits, profit targets, time limits, fees, and profit splits to find the firm that matches your trading style.
Best for: Choosing between FTMO, The5%ers, E8, and others
Risk Management
These are the calculators you should use every day during a challenge. Position sizing and daily loss management are the difference between passing and blowing the account.
Position Size Calculator
Calculate exact lot sizes based on your account balance, risk percentage, stop loss distance, and instrument. Supports forex pairs, indices, and commodities. Built for prop firm constraints where precision matters.
Best for: Every single trade you place during a challenge
Max Daily Loss Calculator
Input your daily loss limit and current balance. See exactly how many trades you can take at different risk levels before hitting the daily cap. Prevents accidental daily breaches.
Best for: Planning your daily session before you trade
Risk of Ruin Calculator
What are the odds of blowing your account with your current stats? Input win rate, average win/loss, and risk per trade. See the mathematical probability of hitting the drawdown limit over a series of trades.
Best for: Stress-testing your strategy before or during a challenge
Recovery & Drawdown
When you're in a drawdown during a challenge, the math changes. These calculators help you figure out what's required to recover and whether it's still possible.
Drawdown Recovery Calculator
Shows how many winning trades you need to recover from a drawdown at different risk levels. A 10% drawdown needs an 11.1% gain to recover, a 20% drawdown needs 25%. See the exact path back.
Best for: Reality-checking your recovery plan during a drawdown
R:R Breakeven Calculator
What win rate do you need to break even at your reward-to-risk ratio? At 1:2 R:R, you only need 33.3% win rate. At 1:1, you need 50%. Helps calibrate expectations for your strategy type.
Best for: Evaluating whether your strategy metrics are viable
Growth & Projections
Once you're funded or planning long-term, these calculators model your growth trajectory.
Compound Growth Calculator
Project your account growth over months and years with consistent returns. Supports optional monthly withdrawals. See how $10,000 at 5% monthly becomes $131,000 in 5 years with compounding.
Best for: Setting long-term goals and modelling funded payouts
Payout Projector
Model your expected payouts from a funded account. Input your account size, profit split, expected monthly return, and withdrawal schedule. See projected income over 12 months.
Best for: Planning funded account income
Funded Survival Calculator
What are the odds of keeping your funded account for 6, 12, or 24 months? Factors in your drawdown limits, win rate, and risk per trade to estimate funded account longevity.
Best for: Understanding long-term funded account sustainability
Consistency & Rules
Consistency Calculator
Check whether your trading pattern meets prop firm consistency rules. Some firms require that no single day accounts for more than a certain percentage of total profits. This calculator flags violations.
Best for: Checking compliance with consistency rules (FTMO, TopTier, etc.)
Pip Value Calculator
Calculate the exact dollar value of one pip movement for any lot size on any forex pair. Essential for converting stop loss distances into dollar risk amounts.
Best for: Quick pip value lookups during trade planning
Go Beyond Calculators
Calculators help you plan. CopyOptic's Prop Tracker monitors your challenge in real time, with live drawdown tracking, daily P&L alerts, and automatic rule compliance checking. Connect your MT4, MT5, or cTrader account and track everything automatically.
Start Tracking Free
All 14 calculators are available at
copyoptic.com/tools. No signup, no ads, no data collection. Built by traders for traders.