What to know before sizing GBPJPY
GBP/JPY is a cross quoted in yen per pound, with a pip of 0.01. One standard lot earns 1,000 yen per pip, and a USD account converts that with the USD/JPY rate, not with the GBP/JPY price: 1,000 ÷ 150 is about $6.67. Using the wrong rate is the classic error on this pair, and the calculator asks for USD/JPY for that reason.
The pair has a long reputation as one of the most volatile in forex, because it combines a lively currency (sterling) with a funding currency (yen) that can swing sharply when risk appetite changes. Wide daily ranges mean wide stops in pips, which mean small lots for a given dollar risk: a 40 pip stop at 1% of $10,000 allows 0.37 lot, not one.
Watch for
- Two sources of risk: sterling news (Bank of England, UK data) and yen news (Bank of Japan, risk sentiment, intervention). Either can move the pair on its own.
- Stops and targets are in 0.01 steps, so 190.00 to 191.00 is 100 pips. Distances look small on the chart and large in pips.
- Overnight swap on yen crosses can be significant and is broker-specific. It is not part of the pip value, so add it to your cost picture if you hold for days.
GBPJPY contract specifications (example)
| Instrument | British pound / Japanese yen (GBPJPY) |
|---|---|
| Contract size (example) | 100,000 GBP per standard lot (0.01 lot = 1,000 GBP) |
| Value of 1 pip per 1 lot | $6.67 at the example price |
| Minimum size and step (example) | 0.01 lot at most retail brokers, in steps of 0.01 |
| Example price used | 190.00 and USD/JPY 150 |
| Currency handling | Quote currency is JPY. A USD account converts yen to dollars by dividing by the USD/JPY rate (the example uses 150.00). |
Example specification. Brokers differ: confirm the contract size, minimum size and step in your platform's contract specification before you size a real trade.
Worked examples for GBPJPY
Every number below is computed with the same formulas as the calculator, at the example prices shown, for a USD account.
Value of one pip at different sizes
At the example price of 190.00, the money value of one pip on GBPJPY for a USD account:
Sizing a trade on GBPJPY from your risk
Account $10,000, risk 1% ($100), stop 40 pips. Each pip is worth $6.67 per lot, so the exact size is 100 ÷ (40 × $6.67) = 0.375 lots. Rounded down to a tradable size that is 0.37, and the real risk is $98.67.
When the USD/JPY moves, the pip value moves
The dollar value of a pip depends on the USD/JPY. At 140 one pip on 1 lot is $7.14; at 160 it is $6.25. Size a 40 pip stop at 140 and you hold 0.35 lots for a $100 risk. If the USD/JPY then moves to 160 before you use that size, the same position risks $87.50 instead.
The math behind the numbers
size = (balance × risk %) ÷ (stop in pips × value of 1 pip per lot)
round down to a multiple of 0.01
position value = size × contract × price (converted to USD)Same formulas as the pip value and position size calculators (GBPJPY numbers above are examples at the price shown). Rounding down keeps real risk at or below your limit.
To run your own numbers for another currency or contract, use the lot size calculator, the pip value calculator or the position size calculator. When the pair is most active, check the forex market hours tool. How much to risk per trade is a separate question, covered in how much to risk per trade, and the step-by-step is in how to calculate position size.
GBPJPY questions
Which rate converts a GBP/JPY pip to dollars?
USD/JPY. The pip is earned in yen, so a USD account divides 1,000 yen per standard lot by the USD/JPY rate: 1,000 ÷ 150 = $6.67. The GBP/JPY price does not enter the pip value.
Why does GBP/JPY need smaller lots than EUR/USD?
Its daily range in pips is typically much larger, so a stop beyond normal noise is further away. For the same dollar risk, a wider stop in pips means a smaller lot.
What does a 100 pip move in GBP/JPY look like?
A move of 1.00 in price, for example 190.00 to 191.00, because the pip is 0.01. On one standard lot at 150 USD/JPY it is about $667.
How much is one pip worth on GBPJPY?
For a USD account, one pip on 1 lot is about $6.67 at the example price of 190.00, and $0.6667 on 0.1 lot. Brokers differ, so confirm the contract size before you rely on it.
What size should I trade on GBPJPY with $10,000?
It depends on your risk and stop, not on the account alone. With 1% risk and a 40 pip stop the example size is 0.37 lots, which risks $98.67. Change the stop and the size changes with it. This is arithmetic, not advice.
Know what each pip is worth, then place the stop.
Once you know what a pip on GBPJPY is worth, the stop distance sets your risk. These indicators help you find where the stop belongs.
Last updated November 2026. For education only. Not financial advice. Position sizing limits the loss you plan, but stops can slip and losses can exceed the planned amount. Results depend on your inputs and cannot predict future performance.