ProTrading · Simulator
Position Size Calculator
Risk a fixed amount — let the stop set your size.
Assumptions
Risk amount
$500
Position size (shares)
100
Position value
$10,000
| Line | Amount |
|---|---|
| Risk per trade | $500 |
| Risk per share | $5 |
| Shares | 100 |
| Position value | $10,000 |
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Built by The Crimson Bench · Educational model, not financial advice
About the Position Size Calculator
Enter account size, risk per trade, entry, and stop to get the exact position size that keeps your loss capped. Educational only, not trading advice.
It's built for directional planning: change any assumption and watch the whole projection move, the way a seasoned operator pressure-tests a plan before committing capital. Everything is computed live in your browser — nothing is sent anywhere.
How the Position Size Calculator Works
The model takes 4 assumptions and returns 3 headline metrics plus a full breakdown. Here is exactly what goes in and what comes out — no black box.
The Inputs
| Assumption | Example value |
|---|---|
| Account size | $50,000 |
| Risk per trade | 1% |
| Entry price | $100 |
| Stop price | $95 |
Worked Example
Every figure below is produced by the live model using the example assumptions above. Change any input in the simulator to see your own numbers.
Risk amount
$500
Position size (shares)
100
Position value
$10,000
| Line | Amount |
|---|---|
| Risk per trade | $500 |
| Risk per share | $5 |
| Shares | 100 |
| Position value | $10,000 |
The Operator's Read
Position sizing off a fixed risk % is the core of survival — the stop distance, not a gut feeling, sets your size. Risking 1% means 20 losses in a row still leaves you standing. Educational only.
Assumptions & Limitations
- •The model is deterministic: it projects your inputs forward with clear arithmetic, not a Monte-Carlo or probabilistic forecast. It shows one scenario at a time — run several to bracket a range.
- •Defaults are illustrative benchmarks, not your business. Replace every field with your real numbers before drawing conclusions.
- •It abstracts away taxes, financing, seasonality, and one-off events unless a field explicitly captures them. Treat the output as a directional estimate.
- •This is an educational tool, not financial, investment, tax, or legal advice. Validate real decisions with a qualified professional.
Frequently Asked Questions
What does the Position Size Calculator calculate?
Enter account size, risk per trade, entry, and stop to get the exact position size that keeps your loss capped. Educational only, not trading advice. It takes 4 assumptions — Account size, Risk per trade, Entry price, Stop price — and returns Risk amount, Position size (shares), Position value, along with a full projection table you can export.
How do I use the Position Size Calculator?
Enter your own figures in the input fields above — Account size, Risk per trade, Entry price, and the rest. The model recalculates instantly and shows the resulting Risk amount and full breakdown. No sign-up needed to run it.
Is the Position Size Calculator free?
Yes — you can run the simulator and see the headline results for free. Toolkit Pro unlocks the full projection table, Excel/PDF export, saved scenarios, and AI analysis: $180/mo, $1,728/yr, or unlock any 3 simulators for $20.
What's the difference between this and a free calculator?
A calculator answers one question. This simulator models the full picture — multiple linked assumptions, a projection table, and scenario comparison — the way an operator would build it in a spreadsheet, but instantly.
Who built the Position Size Calculator?
The Crimson Bench's Ivy League-educated operators — the same people we deploy into C-suites. This is the self-serve version of a model they'd build inside a live engagement.
Is this financial advice?
No. The Position Size Calculator is an educational modeling tool for directional planning — not financial, investment, tax, or legal advice. Validate any real decision with a qualified professional.
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The Crimson Bench · Est. 2002 · Founded in New York City
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