Forex position-size calculator

Estimate a forex lot size from your chosen money budget, stop distance and pip value. Include proportional commission and check the symbol’s volume limits.

Use your own account-currency assumptions. This tool does not fetch live prices, place orders or connect to a trading account.

Calculate a planning estimate

Planning budget

Your chosen money amount, not a recommended risk level.

Display currency

All money inputs must already use this currency. No currency conversion is performed.

Entry-to-stop distance in pips

Pip value for one lot

Money per pip for one lot, in the selected currency. Check the actual contract.

Round-trip commission for one lot

Enter zero only if no proportional commission applies. Fixed minimum fees are not modelled.

Lot increment

Minimum lot size

Maximum lot size

Use the current symbol specification, not a generic default.

Enter plain numbers; a decimal point or comma is accepted. Check grouped thousands before calculating.

Preset inputs: USD 50 budget, 25 pips, USD 10 per pip per lot, USD 7 round-trip commission per lot, 0.01 minimum and increment, 100 maximum.

Rounded position size

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Enter your assumptions and calculate. No position size has been selected.

Calculated from the inputs shown. Rounded down to the entered increment. This estimate excludes slippage, gaps, financing, fixed minimum fees and changes in pip value. A stop does not guarantee its requested execution price.

How the estimate works

The tool divides the chosen money budget by the assumed price loss plus proportional round-trip commission for one lot. It rounds down, applies the maximum size, and returns no size when the result is below the minimum. Required margin is a separate check.

Check the contract and the execution assumptions

Use the actual entry-to-stop bid/ask distance and account-currency pip value. Do not subtract the same spread twice. Confirm current contract size, lot increment, minimum and maximum volume in the platform. This general forex model is not a substitute for instrument-specific pricing or a suitability assessment.

Understand the inputs

Calculation references

MetaQuotes documents account-currency profit pre-evaluation and symbol volume constraints. This tool uses the assumptions you enter, not a connection to MetaTrader.