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AFM Proprietary Program

Position Size Calculator

Free multi-asset lot size calculator — forex, gold, indices, crypto & stocks

Position sizing is what separates traders who last from traders who blow up. This free Asia Forex Mentor calculator gives you the exact lot size for any market — forex, gold, indices, crypto or stocks — from your account balance, your risk and your stop-loss. Live exchange rates, ready for MT4 and MT5. Enter your details below and press Calculate.

Position Size Calculator

Calculation Results

For educational purposes only; not financial advice. Contract specs vary by broker — verify the contract size against yours.
Risk Amount
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Position Size (units)
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base currency units
Position Size (lots)
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Why position sizing decides whether you survive

Ask any professional what separates traders who last from traders who blow up, and almost none of them will start with entries. They will start with size. Your position size sets exactly how much you lose when a trade fails — and even a genuine, high-probability edge fails often.

Size the trade correctly and a run of losses is a flesh wound you trade your way out of. Size it carelessly and one bad trade can wipe out months of work. A position size calculator takes the emotion and the mental maths out of the moment: you decide the most you are willing to lose, and it hands you the precise lot size that respects that limit — every time, on every instrument.

Find the edge. Build the system. Remove emotion. Compound.

How to use the position size calculator

  1. Enter your account balance. Use your live equity, not the amount you originally deposited.
  2. Set the risk you'll take on this trade. Professionals keep it to 1–2% of the account. Small, consistent risk is what keeps you in the game through a losing streak.
  3. Pick your asset class and instrument. Forex, gold and commodities, indices, crypto or shares — the units and contract size adjust for you automatically.
  4. Enter your stop-loss. In pips for forex, or as the price distance for everything else — a $5 move on gold, 150 points on the Dow, $500 on Bitcoin.
  5. Press Calculate. You get your risk amount, your position size in units, and the exact number of lots to enter into MT4, MT5 or any platform.

The lot size formula, in plain English

Behind the tool sits one clean piece of arithmetic — the calculator simply runs it for you and pulls a live exchange rate whenever your account is held in a different currency:

Risk amount = Account balance × Risk %
Position size (lots) = Risk amount ÷ ( Stop-loss distance × Contract size × FX conversion )

For forex, the stop is measured in pips and one standard lot is 100,000 units of the base currency. For gold, indices, crypto and shares, the stop is measured in the instrument's own price and the contract size is the number of units in a lot — 100 ounces of gold, one Bitcoin, one share, and so on. Because brokers don't all use the same contract specifications, the calculator lets you edit the contract size so the answer matches your account to the cent.

Position sizing for every market

Forex

Stop in pips, one standard lot = 100,000 units. Pip value is converted to your account currency at live rates.

Gold & commodities

Stop in dollars of price. Gold defaults to 100 oz per lot, silver 5,000 oz, oil 1,000 barrels — all editable to your broker.

Indices

Stop in index points. Value per point per lot varies by contract, so set it to match your MT4/MT5 platform exactly.

Crypto

Stop in dollars. Most brokers quote one lot as one coin, so your size comes out directly in BTC, ETH or whatever you trade.

Stocks & shares

Stop in price per share. One lot is usually one share, so the result is the exact number of shares to buy or short.

Any account currency

Trading a US-dollar instrument from a EUR, GBP or SGD account? Live FX rates convert your risk so the size is always right.

Position size calculator — FAQ

What is a position size calculator?
It's a risk-management tool that tells you how large a trade to place so that, if your stop-loss is hit, you lose no more than a chosen slice of your account. Enter your balance, your risk percentage and your stop distance, and it returns the exact position size in lots and units.
How do I calculate the right lot size in forex?
Take the amount you're willing to risk (balance × risk %), divide it by your stop-loss in pips times the pip value, then divide by 100,000 to turn units into standard lots. This calculator handles all of it instantly, including the currency conversion when your account isn't in US dollars.
How much of my account should I risk per trade?
Most professionals risk 1–2% on any single trade. Keeping each risk small is exactly what lets you absorb an inevitable losing streak and stay around long enough for your edge to compound.
Does it work for gold, indices, crypto and stocks — not just forex?
Yes. Choose the asset class and the calculator switches to the correct units and contract size. Gold, oil, the Dow, Nasdaq, DAX, Bitcoin, Ethereum and individual shares are all covered.
Can I use the results in MT4 and MT5?
Absolutely. The lot sizes it produces are the numbers you type straight into MetaTrader 4, MetaTrader 5, or any platform that trades in lots. Because contract sizes differ between brokers, you can edit the contract size so the result lines up with your platform precisely.
Why does the pip or point value differ on my broker?
Contract specifications aren't standardised — one broker's gold lot might be 100 ounces, another's may not be. Set the editable contract-size field to your broker's specification and the position size will be exact.
Is this financial advice?
No. It's an educational risk-management tool that helps you apply your own trading plan. It doesn't tell you what to trade or when to trade it.

The calculator sizes the trade. We teach the whole system.

Position sizing is one piece of a complete, high-probability method. See how professional traders find the edge, control risk and read the market like a story.

Watch the free training

This position size calculator is provided for educational purposes only and does not constitute financial advice. Always confirm contract sizes and pip values with your own broker before placing a trade.

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