Free tool

Lot Size & Pip Value Calculator — Standard, Mini & Micro Lots

The fast version of position sizing: balance, risk % and your stop in pips — no prices needed. Get your size in standard, mini and micro lots, the pip value in your account currency, and a session-risk check. Instantly, no login.

Account

Account balance

Account currency (label)

Risk per trade (%)

Stop & pip value

Stop loss (pips)

Pair type

Pip value per standard lot (quote currency) Auto-set from pair type: pip size × 100,000 (0.0001 × 100,000 = 10 quote units; JPY: 0.01 × 100,000 = 1,000 JPY). Editable.

FX rate: quote → account currency Leave 1 when quote currency = account currency (e.g. USD account trading EUR/USD). Example: USD account trading USD/JPY at 155 → 1 JPY ≈ 0.00645 USD → enter 0.00645.

Lot size

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Risk amount

—

balance × risk %

Pip value (account currency)

—

per standard lot

Session risk: 3 losses in a row

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Stop recalculating the same trade twice

The ReziFX Chrome extension captures your planned trades from the TradingView position tool — entry, stop, target, R:R and a chart screenshot — into a journal. Inside the app: five risk calculators (position size, Kelly, drawdown, streaks, Monte Carlo) with saved scenarios.

Try ReziFX free Full position size calculator

The formula, explained

Lots = (account balance × risk %) ÷ (stop pips × pip value per standard lot in your account currency). The pip value per standard lot is pip size × 100,000 in the quote currency — 10 quote units for standard pairs, 1,000 JPY for JPY pairs — multiplied by the quote→account FX rate if your account is held in a different currency.

Example: $10,000 account, 1% risk ($100), 50-pip stop, $10 pip value → $100 ÷ (50 × $10) = 0.20 standard lots, which is 2.0 mini lots, 20 micro lots or 20,000 units.

The session-risk tile answers a question most lot size calculators skip: what does a normal bad session cost? Three consecutive losses at your chosen risk sum to roughly 3 × risk % of the account (compounding makes the true figure slightly smaller). Comparing that number against the 5% daily loss limit used by many prop firms shows whether your per-trade risk even leaves room for a routine losing streak inside one session.

Frequently asked

What is a pip?

A pip is the standard unit of price movement in forex: 0.0001 for most pairs (the 4th decimal) and 0.01 for JPY pairs (the 2nd decimal). If EUR/USD moves from 1.0850 to 1.0851, that is one pip. Many brokers also quote a 5th decimal — that smaller step is a pipette (0.1 pip), not a pip.

How much is a pip worth?

Per standard lot (100,000 units), one pip is worth pip size × 100,000 in the quote currency: 0.0001 × 100,000 = 10 quote units for standard pairs, and 0.01 × 100,000 = 1,000 JPY for JPY pairs. For a USD account trading EUR/USD that is $10 per pip per standard lot, $1 per mini lot and $0.10 per micro lot. If your account currency differs from the quote currency, multiply by the quote→account FX rate.

What lot size fits a small account?

It falls straight out of the formula. Example: $500 account, 1% risk = $5 risk amount. With a 25-pip stop and $10 pip value per standard lot: $5 ÷ (25 × $10) = 0.02 lots — 2 micro lots. With a 50-pip stop it halves to 0.01 lots, the smallest size most brokers offer. That is arithmetic, not a recommendation — the calculator shows the size implied by your own risk settings.

What is the difference between micro and mini lots?

A standard lot is 100,000 units of the base currency. A mini lot is 10,000 units (0.1 standard lot) and a micro lot is 1,000 units (0.01 standard lot). Pip values scale the same way: if one pip is $10 per standard lot, it is $1 per mini lot and $0.10 per micro lot.

Educational tool. Not financial advice — trading involves substantial risk of loss.