GBPUSD Lot Size Calculator
Size every cable trade to your exact risk. Enter your balance, risk and stop and get the GBPUSD lot size, the dollar risk and the reward-to-risk as you type.
Position size calculator1 standard lot = 100,000 units ($10 per pip).
How a GBP/USD lot works
One standard lot of GBPUSD is 100,000 pounds, quoted in dollars, so one pip (0.0001) is worth $10 per lot, $1 per mini lot and $0.10 per micro lot.
Cable moves more than EURUSD — London opens and UK data releases routinely run 40–80 pips — so its stops tend to be wider and the lots smaller for the same risk.
The calculator reads your stop as a price, so pipettes (the fifth decimal) need no conversion.
GBP/USD lot sizes at a glance
Worked out with the calculator above. Left: a $10,000 account risking 1% ($100). Right: a $100,000 prop firm account risking 0.5% ($500).
| Stop | $10,000 · 1% | $100,000 · 0.5% |
|---|---|---|
| 15-pip stop | 0.67 lots | 3.33 lots |
| 25-pip stop | 0.40 lots | 2.00 lots |
| 40-pip stop | 0.25 lots | 1.25 lots |
| 60-pip stop | 0.17 lots | 0.83 lots |
1 standard lot = 100,000 units ($10 per pip).
Frequently asked questions
How much is 1 pip on GBPUSD worth?
$10 per standard lot, $1 per mini and $0.10 per micro — fixed, because the pair is quoted in US dollars.
What lot size should I use for GBPUSD on a $10,000 account?
At 1% ($100) with a 25-pip stop: 100 ÷ (25 × 10) = 0.40 lots.
Why is it called cable?
The GBP/USD rate was once sent across the Atlantic by telegraph cable. The name stuck.
Lot size calculators for other markets
Sizing keeps you alive. An edge makes you money.
Prove your GBP/USD setups the only way that counts — replay real GBP/USD history candle by candle and score every trade.
Backtest GBP/USD