New: AI Risk Calculator — know your exact lot size in seconds · Get it for $17 →
Position Size · Prop Limits · Drawdown Log

Stop guessing
your lot size.

Enter your balance, risk %, and stop loss — get the exact lot size, dollar risk, and an AI review of your risk setup. With a full prop firm limit tracker and trade drawdown log.

Get the Calculator — $17

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⚡ Single HTML file
🔒 Works offline
♾️ Lifetime use
💳 One-time payment
AI Risk Calculator
Balance
$10,000
Risk %
1.0%
Pair
XAUUSD
Entry
2330.00
Stop Loss
2310.00
0.50
Lot Size
$100
At Risk
Risk rating: APPROPRIATE — 1% aligns with FTMO rules
Three tools in one file

Everything risk-related, built in

One dashboard — three integrated tools that cover every aspect of risk management: calculating position size, tracking prop firm limits, and logging drawdown across trades.

01
📐
Position Size Calculator
Enter balance, risk %, entry, and stop loss. Get the exact lot size and dollar risk instantly — with live R:R calculation and AI review of your overall risk setup.
  • Supports EURUSD, XAUUSD, US30, NAS100, GBPUSD, USDJPY + custom pairs
  • Pip value auto-calculated per instrument
  • Live R:R display + dollar reward calculation
  • AI Risk Review with SAFE / CAUTION / HIGH RISK rating
02
🏦
Prop Firm Limit Tracker
Track your FTMO daily loss and total drawdown in real-time with color-coded progress bars. Know exactly how much room you have left before you hit a limit.
  • FTMO $10K, $25K, $50K, $100K presets (+ funded accounts)
  • Color-coded gauges: green → yellow → red
  • Open risk vs. remaining daily allowance alert
  • Plain-language status summary
03
📉
Drawdown Log
Log every trade and track cumulative drawdown automatically. See win rate, max drawdown, average R:R, and daily vs. total loss progress bars — all updated as you log.
  • Add / edit / delete trades in an inline table
  • Auto-calculated KPIs: win rate, max DD, avg R:R
  • Daily and total drawdown progress bars vs. limits
  • Works entirely offline — no internet required
How the calculator works

Exact numbers, not estimates

💰
Dollar Risk
Balance × Risk % gives your maximum loss on this trade. Shown clearly before you enter — no surprises.
$10,000 × 1% = $100 at risk
📏
Pip Distance
Calculates the exact pip distance from entry to stop loss — accounting for instrument-specific pip sizes (XAUUSD ≠ EURUSD).
XAUUSD: 2330 → 2310 = 200 pts
📦
Lot Size Output
Divides dollar risk by (pip distance × pip value per lot) to give the mathematically correct lot size.
$100 ÷ (200 × $1/lot) = 0.50 lots
🤖
AI Risk Rating
Claude AI evaluates whether your risk % is appropriate for your account type, daily loss context, and account size — giving a SAFE / CAUTION / HIGH RISK verdict.
FTMO + 2% risk = "AGGRESSIVE — reduce to 1%"
Prop Firm Traders

Never accidentally breach a limit

FTMO's daily loss and total drawdown limits are what end most challenges — not bad trades, but traders who lost track of where they stood.

The Prop Firm Limit Tracker shows you exactly how much daily loss you've used, how much total drawdown you've incurred, and whether your open risk still fits within today's remaining allowance.

FTMO $10K / $25K / $50K / $100K presets — just select your account size
Color bars turn yellow at 60% used, red at 90% — clear visual warning
Open risk vs. daily remaining — know if your planned trade even fits
Custom firm mode — set your own daily and total drawdown limits
Daily Loss Limit
$170/ $500
SAFE — 34% used
Total Drawdown
$620/ $1,000
CAUTION — 62% used
Open Risk vs. Remaining
$295 open$330 left
HIGH OPEN RISK
⚠ Total drawdown at 62% — trade with maximum caution today

Everything included

Position Size Tab
  • Pair presets — EURUSD, XAUUSD, US30, NAS100, GBPUSD, USDJPY
  • Custom pair support with auto pip-value detection
  • Live lot size, dollar risk, R:R, dollar reward
  • AI Risk Review with SAFE / CAUTION / HIGH RISK rating
  • Risk % verdict: Conservative / Appropriate / Aggressive / Reckless
  • Daily loss used input — AI factors in your current P&L
  • Account type: Personal, FTMO, Funded, Demo
Prop Firm Tracker Tab
  • FTMO $10K / $25K / $50K / $100K presets
  • FTMO Funded account mode (tighter limits)
  • Custom firm mode — enter your own limits
  • 3 color-coded gauges: daily, total, open risk
  • Plain-language status summary
  • Warning when open risk exceeds remaining daily allowance
Drawdown Log Tab
  • Add / edit / delete trades inline
  • Auto-calculated: Total P&L, Max Drawdown, Win Rate
  • Daily loss progress bar (vs. 5% limit)
  • Total drawdown progress bar (vs. 10% limit)
  • Trade count, avg R:R
  • Works 100% offline — no internet needed for log
Comparison

vs. what most traders use now

Feature AI Risk Calculator Random lot size calculator online
Position size calculation✓ Exact, with pip auto-detect✓ Basic
AI risk rating & feedback✓ Contextual AI review✗ None
Prop firm limit tracking✓ Color gauges + warnings✗ None
Drawdown log with KPIs✓ Full trade log + auto stats✗ None
Works offline✓ Full offline support✗ Requires internet
Ads / popups✓ None✗ Often heavy ads
Privacy✓ No data sent anywhere (except AI API)✗ Tracking unknown
Cost$17 one-timeFree (ad-supported)
Pricing

One price. Three tools.

AI Risk Calculator
Full Dashboard Access
Position Size · Prop Limits · Drawdown Log
$17
One-time payment · Instant download
  • All 3 tools in one HTML file
  • AI Risk Review (requires free Anthropic API key)
  • FTMO / Prop Firm limit tracker with all account sizes
  • Drawdown log with auto-calculated stats
  • Works offline in any browser — no install
  • Lifetime use, no subscription
Get the Calculator — $17 →
Instant download · Opens in Chrome, Firefox, or Safari
Questions? Reply to your Gumroad receipt email
Trading Pro Bundle
Want the complete trading toolkit?
Risk Calculator + Trade Analysis Dashboard + Trading Journal Pro — save 30%
View Trading Bundle → Save ~$18 vs. buying separately

Questions

Is the AI review required, or does the calculator work without it?+
The position size calculator, prop firm tracker, and drawdown log all work 100% without an API key or internet connection. The AI Risk Review is an optional feature that requires an Anthropic API key (~$0.01 per review). You can use all other tools offline.
Which pairs and instruments does it support?+
Built-in presets for EURUSD, GBPUSD, AUDUSD, NZDUSD, USDJPY, EURJPY, GBPJPY, XAUUSD (gold), XAGUSD (silver), US30 (Dow), NAS100, SPX500, and UK100. You can also type any custom pair — pip value is auto-detected based on instrument type.
Does the drawdown log save between sessions?+
The current version stores trades in memory during your browser session — closing the tab clears the log. This is intentional to keep the file simple and offline. For a persistent journal with session memory, check out our Trading Journal Pro.
Is this compatible with prop firms other than FTMO?+
Yes. The Prop Firm Tracker has an FTMO preset for convenience, but also includes a "Custom" mode where you can enter any account size, daily loss limit, and total drawdown limit. It works for any prop firm: Topstep, The Funded Trader, MyFundedFX, E8, and more.
How is lot size calculated — is it accurate?+
Yes. The formula used is: Lot Size = Dollar Risk ÷ (Pip Distance × Pip Value per Lot). Pip values are instrument-specific — XAUUSD, JPY pairs, and indices all use different pip sizes and values, which the calculator handles automatically based on the instrument selected.