Calculate the exact lot size for every trade. Enforces the 0.5% per-trade limit and 1% daily risk target so your challenge drawdown stays clean.
Multi-Asset Protocol
Your current account equity or challenge balance
Trade90 Safety System: 0.5% max per trade
Your planned trade entry price
Price where your trade idea is invalidated
Your target — used to calculate R:R ratio
Recommended Position
✓ SAFEStandard Lots
Total Risk
$500.00
R:R Ratio
1:1.00
Stop Pips
50.0
Internal Risk Framework
Most funded traders fail not from bad entries — from bad sizing. The Trade90 Safety System is a two-rule risk framework that keeps your challenge drawdown clean through every losing streak.
Not an official prop firm rule — Trade90's internal discipline standard
On a $100,000 challenge, that is $500 maximum risk per trade. Five consecutive losses cost only 2.5% — comfortably inside every prop firm's 4–5% daily drawdown limit.
5 losses at 2.0% → −10% (FAIL)
5 losses at 1.0% → −5% (borderline)
5 losses at 0.5% → −2.5% (SAFE)
Total risk across all trades in a single day should not exceed 1% of your account. This is half the typical 4–5% daily limit — giving you a safety buffer even on your worst session.
2 trades at 0.5% = 1.0% daily (target hit)
3 trades at 0.5% = 1.5% daily (over target)
Firm limit typically = 4–5% (danger zone)
SAFE
≤ 0.5% funded / ≤ 1% real
Within Trade90 limits. Proceed.
CAUTION
0.5–0.75% funded
Slightly above the 0.5% target.
AGGRESSIVE
0.75–1% funded
High risk. Drawdown builds fast.
DANGEROUS
> 1% funded
Challenge at risk. Reduce size.
FTMO — Official Partner
FTMO is the world's most recognized prop firm. Start with a $100,000 challenge — use this calculator to size every trade before you place it.
★ Affiliate link — TRADE90 earns a commission at no extra cost to you
Every funded challenge has a maximum daily drawdown (typically 4–5%) and a maximum total drawdown (typically 8–10%). The lot size you trade determines whether a losing trade costs $100 or $5,000 — regardless of what percentage you think you're risking.
The formula is simple. The discipline to use it on every trade is not. The TRADE90 calculator removes the discipline barrier — it does the math instantly so you never enter a trade without knowing the exact dollar cost of being wrong.
Funded traders worldwide — from the USA, UK, Europe, and Australia — specifically benefit from the calculator's Funded Account mode, which enforces the Trade90 Safety System limits automatically and shows your remaining daily budget in real time.
Risk $ = Account Balance × (Risk% ÷ 100)
Pips = |Entry − Stop Loss| ÷ Pip Size
Lots = Risk $ ÷ (Pips × Pip Value/Lot)
| Account Balance | $100,000 |
| Risk (Trade90 max) | 0.5% = $500 |
| Entry Price | 1.08500 |
| Stop Loss | 1.08250 (25 pips) |
| EUR/USD Pip Value | $10.00 per lot |
| Calculation | $500 ÷ (25 × $10) |
| Lot Size | 2.00 lots |
Dedicated calculators with pre-configured pip values
Calculator
Trade90 Safety System enforced. 0.5% per trade, 1% daily target, real-time risk states.
Calculator
Lot sizing for FTMO Phase 1 and Phase 2. Calibrated to FTMO drawdown limits.
Guide
The complete risk management framework for US traders on funded challenges.
Guide
Step-by-step formula guide for forex, gold, indices, and crypto position sizing.
Analysis
Which prop firms accept American traders and how to pass with the 1% rule.
Analysis
The volatility-adjusted risk blueprint: 0.5% rule, ADR calibration, and checklists.
Trade90 Safety System · Position Sizing · Prop Firm Risk Management
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UK traders face specific challenges with position sizing: GBP-denominated accounts, FCA-regulated brokers with leverage caps, and prop firm evaluations. Here's the complete framework.