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Gold and silver · Free calculator

XAGUSD (silver) lot size calculator

On XAGUSD a lot is 5,000 ounces at the brokers we checked, so a $0.01 move is $50 per lot and a $1.00 move $5,000. Risking 1% of $10,000 with a $0.40 stop gives 0.05 lots.

Risk per trade
Position size (rounded down to 0.01 lot)
0.05 lots
Risk amount$100.00
Exact size0.0500 lots
Mini lots (0.10)0.50
Micro lots (0.01)5.0
Units250 oz
Value of 1 pip per lot$50.00

USD account. 1 lot = 5,000 oz; 1 pip = a 0.01 move. Spread and commission not included.

The calculator opens on the worked example below: a USD account, 1% of $10,000. Trading involves substantial risk of loss and is not suitable for every investor. Edgoro is a software tool, not a broker or financial adviser: nothing it produces is investment advice, and past or backtested performance does not guarantee future results.

What 1 pip is on XAGUSD

Silver is quoted in dollars per ounce, usually with 3 digits (48.125). Capital.com, BlackBull Markets and Purple Trading all publish a contract size of 5,000 oz, fifty times gold's 100 oz. So an MT5 point (0.001) is worth $5 per lot, and the 0.01 move the calculator counts as a pip is worth $50.

That large contract is why silver lot sizes are tiny for an ordinary risk: a 40-cent move on 1.00 lot is $2,000.

XAGUSD pip value per lot

Value of one pip (0.01 in price): 0.01 × 5,000 = $50 per 1.00 lot, with a contract size of 5,000.

Position1 pip40 pips (0.40)
1.00 lot$50.00$2,000.00
0.10 lot$5.00$200.00
0.01 lot$0.50$20.00

Worked example: 1% of $10,000

  1. Risk: 1% × $10,000 = $100.00.
  2. Stop: 40 pips = 0.40 in price.
  3. Value of 1 pip per 1.00 lot: $50.00.
  4. Lot size = $100.00 ÷ (40 × $50.00) = 0.0500, rounded down to the 0.01 step: 0.05 lots.

A $0.40 stop is 40 pips in the calculator and 400 points on a 3-digit quote.

Contract size and tick value in MT5

In MetaTrader 5, right-click XAGUSD in Market Watch and choose Specification: it shows Contract size, Digits, Profit currency and the volume limits. Tick size and tick value are what MQL5 reads with SYMBOL_TRADE_TICK_SIZE and SYMBOL_TRADE_TICK_VALUE; the script below prints them for your account.

Contract size5,000 (troy ounces) at the three brokers below
Digits3 at the three brokers below (48.125)
Tick size (SYMBOL_TRADE_TICK_SIZE)0.001
Profit currencyUSD
Tick value, 1.00 lot (SYMBOL_TRADE_TICK_VALUE)$5.00 per 0.001 tick with 5,000 oz
Loss per lot at the stopstop in dollars × contract size

Published values, checked on 2026-11-12. Specifications change and can differ by account type: your own Specification window is the reference.

SourceSymbol thereContract sizePrice step
Capital.comSilver50003 digits
BlackBull MarketsXAGUSD5,000 oz0.001
Purple TradingXAGUSD50000.001

MQL5: lot size from a money risk

A script that sends no order: it reads the contract size, tick size, tick value and volume limits your broker sets for XAGUSD, then prints the lot size that risks 1% of the balance at the stop. The stop is a price distance (0.40), so the result is the same on 2-, 3- or 5-digit quotes. Save it as MQL5/Scripts/LotSize_XAGUSD.mq5 and compile it in MetaEditor (F7): 0 errors, 0 warnings.

MQL5
//+------------------------------------------------------------------+
//| LotSize_XAGUSD.mq5                                             |
//| Lot size that risks a % of the balance at a given stop distance|
//+------------------------------------------------------------------+
#property script_show_inputs

input string InpSymbol       = "XAGUSD"; // Symbol, exactly as in Market Watch
input double InpRiskPercent  = 1.0;      // Risk per trade, % of balance
input double InpStopDistance = 0.40;     // Stop-loss distance in price (0.40 = 40 pips)

// Lots that lose about riskMoney at the stop, rounded down to the volume step.
// Returns 0 when even the minimum volume would risk more than riskMoney.
double LotsForRisk(const string symbol, const double riskMoney, const double stopDistance)
  {
   double tickSize  = SymbolInfoDouble(symbol, SYMBOL_TRADE_TICK_SIZE);
   double tickValue = SymbolInfoDouble(symbol, SYMBOL_TRADE_TICK_VALUE); // 1.00 lot, one tick, account currency
   double step      = SymbolInfoDouble(symbol, SYMBOL_VOLUME_STEP);
   double minLot    = SymbolInfoDouble(symbol, SYMBOL_VOLUME_MIN);
   double maxLot    = SymbolInfoDouble(symbol, SYMBOL_VOLUME_MAX);
   if(tickSize <= 0.0 || tickValue <= 0.0 || step <= 0.0 || stopDistance <= 0.0)
      return 0.0;
   double lossPerLot = stopDistance / tickSize * tickValue;            // money lost by 1.00 lot at the stop
   double lots       = MathFloor(riskMoney / lossPerLot / step + 1e-9) * step;
   if(lots < minLot)
      return 0.0;
   int volumeDigits = (int)MathMax(0.0, MathCeil(-MathLog10(step) - 1e-9));
   return NormalizeDouble(MathMin(lots, maxLot), volumeDigits);
  }

void OnStart()
  {
   if(!SymbolSelect(InpSymbol, true))
     {
      PrintFormat("%s not found: use the exact name from Market Watch (some brokers add a suffix)", InpSymbol);
      return;
     }
   int    digits   = (int)SymbolInfoInteger(InpSymbol, SYMBOL_DIGITS);
   double point    = SymbolInfoDouble(InpSymbol, SYMBOL_POINT);
   double contract = SymbolInfoDouble(InpSymbol, SYMBOL_TRADE_CONTRACT_SIZE);
   double tickSize = SymbolInfoDouble(InpSymbol, SYMBOL_TRADE_TICK_SIZE);
   double tickVal  = SymbolInfoDouble(InpSymbol, SYMBOL_TRADE_TICK_VALUE);
   string currency = AccountInfoString(ACCOUNT_CURRENCY);
   double risk     = AccountInfoDouble(ACCOUNT_BALANCE) * InpRiskPercent / 100.0;
   double lots     = LotsForRisk(InpSymbol, risk, InpStopDistance);

   PrintFormat("%s: contract size %g, %d digits, tick size %s, tick value %g %s per lot",
               InpSymbol, contract, digits, DoubleToString(tickSize, digits), tickVal, currency);
   PrintFormat("Stop %s = %.0f points. Risk %.2f %s",
               DoubleToString(InpStopDistance, digits), InpStopDistance / point, risk, currency);
   if(lots > 0.0)
      PrintFormat("Lot size: %g", lots);
   else
      Print("Even the minimum volume risks more than that: widen the risk or tighten the stop");
  }

The key line is stopDistance / tickSize * tickValue: the money one lot loses at the stop, already converted to your account currency by the terminal. Dividing the risk by it and flooring to SYMBOL_VOLUME_STEP gives the volume to pass to CTrade::Buy() or CTrade::Sell().

Pine Script v6 equivalent

The same sizing on a TradingView chart, from syminfo.pointvalue (money per 1.0 of price per unit) and syminfo.mintick (the chart's tick). Checked by Edgoro Pine Check; paste it into TradingView's Pine Editor to add it to a chart.

Pine Script v6
//@version=6
indicator("XAGUSD lot size for a money risk", overlay = true)

riskMoney    = input.float(100.0, "Risk per trade (account currency)", minval = 0.01)
accountCcy   = input.string("USD", "Account currency")
stopDistance = input.float(0.40, "Stop-loss distance (price)", minval = 0.0)
contractSize = input.float(5000.0, "Units per 1.00 lot at your broker", minval = 0.0)

// One unit of the symbol gains or loses syminfo.pointvalue (in syminfo.currency) per 1.0 of price
fx          = request.currency_rate(syminfo.currency, accountCcy)
lossPerUnit = stopDistance * syminfo.pointvalue * fx
units       = lossPerUnit > 0 ? riskMoney / lossPerUnit : na
lots        = contractSize > 0 ? math.floor(units / contractSize * 100) / 100 : na

var table info = table.new(position.top_right, 2, 3, bgcolor = color.new(color.gray, 80))
if barstate.islast
    table.cell(info, 0, 0, "Stop")
    table.cell(info, 1, 0, str.tostring(stopDistance / syminfo.mintick, "#") + " ticks of " + str.tostring(syminfo.mintick))
    table.cell(info, 0, 1, "Units")
    table.cell(info, 1, 1, str.tostring(units, "#.####"))
    table.cell(info, 0, 2, "Lots (rounded down)")
    table.cell(info, 1, 2, str.tostring(lots, "#.##"))

On a CFD chart syminfo.pointvalue is usually 1, so units is the number of ounces: set the contract size input to your broker's value. On a futures chart, syminfo.pointvalue already includes the contract multiplier, so units are contracts and the contract size input should be 1.

Common mistakes on XAGUSD

  • Copying gold sizes. 0.33 lots of silver with a $0.40 stop risks $660, not $100: the contract is fifty times larger.
  • Points versus cents. 40 cents are 400 points on a 3-digit quote; an EA that takes its stop in points needs 400.
  • The minimum lot sets a floor. 0.01 lot of silver is 50 oz: with a $2.00 stop that already risks $100. On a small account, wide stops can't be sized down any further.

Lot size sets how much a trade loses if the stop is hit at its price. It doesn't make a trade a good one, and gaps or slippage can make the loss larger. Trading involves substantial risk of loss and is not suitable for every investor. Edgoro is a software tool, not a broker or financial adviser: nothing it produces is investment advice, and past or backtested performance does not guarantee future results.

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Tools and code for the same job

Want the sizing inside an Expert Advisor?

Describe your XAGUSD strategy in plain English and Edgoro's MT5 EA generator writes the MQL5 Expert Advisor, with risk-based lot sizing like the script above, and compiles it in MetaEditor before you get it. Test it on a demo account: a clean build isn't proof that a strategy works.