How do you calculate lot size in forex?

Divide the dollars you want to risk by your stop-loss in pips times the pip value per lot. Risk is your balance times your risk percentage. For EURUSD, with a $10,000 account, 1% risk and a 30 pip stop, that is $100 ÷ (30 × $10) = 0.33 lots.

What lot size should I use on a $10,000 account?

It depends on your risk and your stop, not on the balance alone. With 1% risk and a 30 pip stop on EURUSD it is about 0.33 lots. With a 15 pip stop it doubles to about 0.67 lots, and with a 60 pip stop it halves to about 0.17 lots. The risk in dollars stays the same.

How many units is a standard, mini and micro lot?

A standard lot is 100,000 units of the base currency, a mini lot is 10,000 units and a micro lot is 1,000 units. The calculator shows your result in all three so you can enter the size your platform expects.

How much should I risk per trade?

The common guideline is 0.5% to 2% of the account per trade, with 1% as the standard. On a funded account the drawdown is usually the tighter limit, so most traders keep per-trade risk modest to protect it.

Is this lot size calculator free?

Yes. It is free to use with no sign-up. Enter your balance, risk and stop and the lot size shows instantly. For crypto and stocks, use the position size calculator.

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Free ToolUpdated October 5, 2026

Forex Lot Size Calculator

Q: Does Velotrade limit lot size on a funded account?

No. There is no maximum risk per trade and no lot-size cap. Your limits are the leverage available on each pair, the daily loss limit and the static drawdown. The calculator shows the leverage a position needs so you can check it against the pair's limit.

Get the exact forex lot size that risks the amount you choose. Enter your balance, your risk per trade and your stop-loss in pips, and the calculator returns the lot size in standard, mini and micro lots, plus the leverage the trade needs.

Currency pair

Velotrade leverage on EURUSD: 50x in the challenge, 30x when funded. 1 lot = 100,000 EUR.

Account balance

Risk per trade

Risking $100.00 on this trade

Stop-loss distance in pips

EURUSD price

Prices are examples. Replace them with the live price from your platform.

Lot size

0.33 lots

That is 33,333 units of EUR

Standard lots

0.33

Mini lots

3.33

Micro lots

33.33

Risk amount

$100.00

1% of balance

Pip value at this size

$3.33

Position value

$36,333

notional, in dollars

Leverage to hold

3.63x

notional ÷ balance

On a Velotrade funded account there is no maximum risk per trade and no lot-size cap. Your limits are the leverage on each pair, the daily loss limit and the static drawdown. Check that the leverage above stays within the pair's limit.

Trade this size on a $10K evaluation· $100

One-time fee · Static drawdown · No time limit

Next: Pip value calculatorWhat one pip is worth in dollars for any forex pair and lot size.Next: Drawdown calculatorSee your floor, daily budget and how many losing trades you can take.

How to use this calculator

Set balance and risk

Enter your account balance and pick how much of it to risk. One percent is the usual starting point.

Enter the stop in pips

Choose the pair and type the distance to your stop-loss in pips. Wider stops mean a smaller position.

Read your lot size

You get lots, units, the pip value at that size, the position value and the leverage needed to hold it.

What these numbers mean

Lot size: How big the position is. A standard lot is 100,000 units of the base currency, a mini lot 10,000 and a micro lot 1,000.

Risk amount: The dollars you lose if the stop is hit. It is your balance times your risk percentage.

Stop-loss in pips: The distance between your entry and your stop. The wider it is, the smaller the lot size for the same risk.

Pip value at this size: What one pip is worth for the lot size calculated. Multiply it by your stop in pips to get back the risk amount.

Leverage to hold: The position value divided by your balance. Check it against the limit for the pair you trade.

Risk per trade: The share of your account you accept losing on a single trade. Keeping it small is what protects a funded account's drawdown.

The lot size formula, with examples

Lots = (Balance × Risk %) ÷ (Stop in pips × Pip value per lot)

The top half is the dollars you are willing to lose. The bottom half is what a stopped-out trade costs for every lot you hold. Divide one by the other and the loss at your stop equals your planned risk. Pip value per lot is $10 on pairs quoted in dollars and differs on other pairs, which is why the pair matters.

EURUSD, $10,000 account, 1% risk, 30 pip stop

Risk is $100. One lot costs 30 × $10 = $300 if the stop is hit.
Lots = $100 ÷ $300 = 0.33, which is 33,333 units, 3.3 mini lots or 33 micro lots.
At 1.0900 the position is worth about $36,333, so the trade needs roughly 3.6x leverage.

USDJPY at 150.00, $10,000 account, 1% risk, 40 pip stop

One pip on one lot is $6.67 at this price, so one lot costs 40 × $6.67 = $266.67 at the stop.
Lots = $100 ÷ $266.67 = 0.375, which rounds to 0.38 on most platforms.
Yen pairs size differently because the pip is worth less than $10, so the same stop allows a larger position.

EURUSD, $5,000 account, 1% risk, 25 pip stop

Risk is $50. One lot costs 25 × $10 = $250 at the stop.
Lots = $50 ÷ $250 = 0.20 lots, or 2 mini lots.
Halving the stop to 12.5 pips would double the position to 0.40 lots for the same $50 of risk.

Velotrade lists 41 forex pairs, with leverage of up to 50x on the majors during the challenge. The full list with leverage for every pair is on the instruments page, and the forex market page covers hours and costs. For crypto and stocks, use the position size calculator.

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Frequently asked questions

Common questions about lot size, risk per trade and sizing forex positions.

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