Define account risk
Choose the account currency, enter the balance and set the percentage risk.
Free risk tool
Lot Size Calculator
Calculate position size from account balance, risk and Stop Loss for Forex, metals and indices.
Five simple inputs
Trade parameters
Account currency
USD
%
Many risk plans use 1–2% or less per trade.
Uses a standard 100,000-unit Forex contract.
pip
Automatic preset: $10.00 per pip for 1.00 lot
Standard pip size 0.0001 and 100,000 EUR per 1.00 lot.
Advanced broker settings
Only change these values when your broker's contract specification differs from the preset.
USD
Leave empty to use the automatic value.
lots
lots
lots
USD
Optional commission for 1.00 lot.
Result
Suggested position size
EUR/USD
Automatic preset0.50
lots
The result already matches the broker volume step.
Risk amount
$100.00
Estimated loss
$100.00
Value / pip
$10.00
Raw lot size
0.5
Mini lots
5
Micro lots
50
Units
50,000
Daily exchange rates updated 11 Sept 2026, 00:02 UTC.
Rates are informational and are not real-time bid/ask prices. Rates by Exchange Rate API
Faster inside MT5
No contract tables. No repeated calculations.
Fast Entry Manager reads the selected MT5 symbol directly, calculates the position from Entry and Stop Loss, and prepares the trade before execution.
Explore Fast Entry ManagerEducational estimate only. Verify the final volume, contract specification and available margin on your own trading platform before placing an order.
Three-step calculation
From risk limit to executable volume.
The public calculator handles the common setup automatically. Broker-specific values remain available only when you need to override a preset.
Select the instrument
Choose a Forex pair, Gold, Silver or index and let the calculator load its preset.
Enter the Stop Loss
Add the distance in pips, price units or index points and receive the rounded lot size.
Broker-specific inputs
Why one symbol can produce different lot sizes.
A fixed online table cannot guarantee the same result for every broker. Check the exact contract specification before relying on any calculated volume.
Tick size
The minimum price movement defined for the exact symbol offered by the broker.
Tick value
The monetary result of one tick for a given volume, reported in or converted to account currency.
Contract specification
One lot can represent a different contract on Forex, XAUUSD, DE40, US100 or another CFD.
Volume limits
Minimum, maximum and volume step determine the position size the broker will accept.
Fast Entry Manager for MT5
Calculate once here. Automate every setup inside MT5.
Fast Entry Manager reads the selected symbol's broker properties, calculates lot size from fixed or percentage risk and updates the result as you position Entry and Stop Loss on the chart.
Frequently asked questions
Lot size calculation, clarified.
How does the Lot Size Calculator work?+
Select the account currency and instrument, then enter account balance, risk percentage and Stop Loss distance. The calculator applies the instrument preset, converts its value into the account currency and rounds the result down to the permitted volume step.
Can I use this calculator for Forex, Gold and indices?+
Yes. The dropdown contains Forex majors and crosses, Gold, Silver, DAX, US30, US100, US500 and UK100 presets. Forex uses standard 100,000-unit contracts. Metal and index CFD specifications can differ by broker, so their preset can be overridden in Advanced broker settings.
Should I use balance or equity for percentage risk?+
Balance excludes floating profit and loss, while equity includes it. Either can be used if it matches your written risk plan, but the same method should be applied consistently.
Are the currency exchange rates live?+
The open exchange-rate source updates once per day, not tick by tick. The exact update time and source status are shown beside the result. These rates are used only to convert the preset monetary value into USD, EUR or GBP account currency.
Why is the calculated lot size different from another website?+
Calculators may use different exchange rates, contract assumptions or rounding rules. This page uses daily currency rates, rounds down to the volume step and clearly shows the instrument assumption being applied.
Does leverage change the lot size calculation?+
Leverage primarily changes the margin required to hold a position. The estimated loss between Entry and Stop Loss still depends on volume, price distance and the symbol's monetary tick value.
Can the actual loss exceed the estimate?+
Yes. Spread, commission, slippage, swaps, price gaps and execution conditions can change the realized result. The calculator is a planning tool, not a guarantee of maximum loss.
Continue learning
Risk note
This calculator is provided for educational planning and does not constitute financial advice. Verify all values on your own trading platform. Spread, commission, slippage, swaps, gaps and execution conditions can cause the realized loss to differ from the estimate.