Sri Lanka — Working Back From Risk to Volume
This works backwards from risk to volume, which is the only direction that keeps position sizing honest. Decide the money you are willing to lose on the trade, set the stop where the instrument says it belongs, then let the calculator return the volume that makes those two agree. The volume is the output of the decision, never the starting point.
An Exness lot size calculator turns your risk into a position size: enter your account balance, how much you are willing to risk per trade and your stop-loss in pips, and it returns the volume in lots. Sizing your position to your risk is the core of trading risk management. Pro mode sizes in your account currency, checks the margin the size needs and sets the stop from the instrument's measured average daily range; switch to Simple for a quick lots-from-risk figure.
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Every figure is computed from spreads and contract specifications captured on a live Standard account (2026-09-06). Figures are indicative — spreads may fluctuate and actual results will vary.
What lot size fits a $1,000 account risking 2%?
Risking 2% of a $1,000 account puts $20 at risk. With a 30-pip stop-loss on EUR/USD, where one pip per lot is worth about $10.00 at measured specs, the size is about 0.07 lots — around 7,000 units, needing about $40.65 of margin at 1:200 leverage.
Figures are indicative, from spreads and contract specs measured on a live Exness Standard account (2026-09-06). Converted to Sri Lankan rupee (LKR), the same amounts follow the current exchange rate, which changes through the day.
Questions that come up mid-way
Why does the lot size depend on the stop-loss?
Does the method change in another deposit currency?
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Why sizing forwards goes wrong
Starting from a volume that feels normal and then finding a stop that fits it is the most common way a position ends up too large. The stop drifts inward until the arithmetic looks acceptable, and it ends up inside the distance the instrument covers on an ordinary day.
Working backwards removes the drift. Risk and stop are both decided from things outside the trade - the account and the instrument's measured range - and the volume simply falls out of them.
The two checks after the volume is returned
First, the instrument minimum. If the calculated volume is below what the instrument allows, the answer is a wider stop or a different instrument, never a rounded-up size that quietly doubles the risk.
Second, the margin. Risk and margin are different constraints, and a position that is comfortable on risk can still be refused by the server for margin. Check free margin, not balance, because open positions have already committed part of it.
Working back from risk to volume
- Decide the amount of money at risk on this trade, as a figure rather than a feeling.
- Set the stop distance from the instrument: outside the noise, using the measured daily range rather than a round number.
- Enter the instrument, the stop distance and the risk amount, and read the volume the calculator returns.
- Check the returned volume against the minimum for that instrument. Below the minimum, the trade needs a wider stop or a smaller instrument, not a rounded-up size.
- Check the required margin for that volume against free margin, because a size that is affordable in risk terms can still be unaffordable in margin terms.
- Enter that volume in the order window and leave it alone. Adjusting it upward after the calculation undoes the whole exercise.
Contract sizes differ between forex, metals and indices, so the same volume figure means different exposure on different instruments.