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Lot Size Calculator
Convert a lot size into units and see exactly what it risks: pip value at that size, the money lost if your stop is hit, and that loss as a share of your account.
Position size in units50,000
Pip value$5.00
Risk at stop loss$150.00
Risk as % of balance1.50%
Size the position from your risk instead with the Position Size Calculator
Lot types and pip values
Standard, mini, micro and nano lots for EUR/USD in a USD account, with units and live pip value at each size.
| Lot type | Position size (lots) | Units | Pip value |
|---|---|---|---|
| Standard | 1.000 | 100,000 | $10.00 |
| Mini | 0.100 | 10,000 | $1.00 |
| Micro | 0.010 | 1,000 | $0.10 |
| Nano | 0.001 | 100 | $0.01 |
How it works
Units = Lots × 100,000
Risk = Pip value at size × Stop loss in pips
Risk % = Risk ÷ Account balance × 100Worked example
Trading 0.5 lots of EUR/USD equals 50,000 units, worth $5.00 per pip. With a 30-pip stop loss the position risks $150 — 1.5% of a $10,000 account.
FAQ
How many units are in a forex lot?
One standard lot is 100,000 units of the base currency. A mini lot (0.10) is 10,000 units and a micro lot (0.01) is 1,000 units. 0.5 lots of EUR/USD therefore controls €50,000.
What does the risk check tell me?
It multiplies the pip value of your chosen size by your stop-loss distance to show the money at risk, then expresses it as a percentage of your balance. If it exceeds common guidelines the calculator flags it.
Is the pip value the same for every pair?
No. Pip value depends on the pair’s quote currency and your account currency, so it changes with live market rates. For pairs quoted in your account currency (like EUR/USD for a USD account) a standard lot is a fixed $10 per pip.
Should I pick lot size first or risk first?
Risk-first sizing is generally safer: decide the loss you can accept, then derive the lots with the Position Size Calculator. Use this lot size checker when your platform or strategy fixes the size and you want to verify what it risks.
What is a nano lot?
A nano lot is 100 units of the base currency — 0.001 of a standard lot. The reference table lists standard (100,000), mini (10,000), micro (1,000) and nano sizes with their pip values.
How do I share the risk check?
Use Copy link under the result. The URL stores the pair, lot size, stop distance and account currency so you can reopen the same check later or send it to someone else.
Related calculators
Position Size Calculator
Size positions in lots and units from your balance, risk % and stop-loss distance.
Pip Value CalculatorLive pip values per standard, mini and micro lot in your account currency.
Margin & Leverage CalculatorRequired margin at any leverage tier, or the max size your margin allows.
Profit CalculatorP/L of a long or short trade in pips and money, at live prices.
Trading Risk KitR:R and breakeven win rate, risk of ruin, and Kelly criterion staking.
Compounding CalculatorProject account growth period by period with reinvested returns.
The results produced by these calculators are estimates based on live market prices and the inputs you provide. They are for informational purposes only and do not constitute investment advice. Actual trading conditions, including spreads, commissions, swap rates and broker margin requirements, may differ. Trading foreign exchange and CFDs carries a high level of risk and may not be suitable for all investors.
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