What to know before sizing USDJPY
USD/JPY is quoted in yen per dollar, so the pip is 0.01 (two decimals, not four) and the profit is earned in yen. One standard lot of 100,000 dollars gains or loses 1,000 yen per pip, and converting that to dollars means dividing by the current price. That is why a pip is worth about $6.67 at 150 but $7.14 at 140.
The pair is driven by Bank of Japan policy, US Treasury yields and, at times, the threat of official intervention in the yen, which in the past has produced very fast moves within minutes. Stops can slip in those moments, so treat the stop as an intention rather than a guarantee, and consider a smaller size around such events.
Watch for
- Two decimals, not four: 150.25 to 150.45 is 20 pips, and a move of 1.00 is 100 pips.
- On a yen-denominated account no conversion is needed: a pip is simply 1,000 yen per standard lot.
- The dollar value of a pip falls as the price rises. A lot sized when the price was 140 under-risks slightly at 160, and the reverse. Refresh the price when you size, especially in a fast market.
USDJPY contract specifications (example)
| Instrument | US dollar / Japanese yen (USDJPY) |
|---|---|
| Contract size (example) | 100,000 USD per standard lot (0.01 lot = 1,000 USD) |
| 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 | 150.00 |
| Currency handling | Quote currency is JPY. A USD account converts yen to dollars by dividing by the USD/JPY price. |
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 USDJPY
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 150.00, the money value of one pip on USDJPY for a USD account:
Sizing a trade on USDJPY from your risk
Account $10,000, risk 1% ($100), stop 30 pips. Each pip is worth $6.67 per lot, so the exact size is 100 ÷ (30 × $6.67) = 0.5 lots. Rounded down to a tradable size that is 0.50, and the real risk is $100.
When the USDJPY price moves, the pip value moves
The dollar value of a pip depends on the USDJPY price. At 140.00 one pip on 1 lot is $7.14; at 160.00 it is $6.25. Size a 30 pip stop at 140.00 and you hold 0.46 lots for a $100 risk. If the USDJPY price then moves to 160.00 before you use that size, the same position risks $86.25 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 (USDJPY 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.
USDJPY questions
Why is a USD/JPY pip not worth $10?
The pip is earned in yen: 1,000 yen per standard lot. A USD account converts it at the current price, so it is 1,000 ÷ 150 = $6.67 at 150 and changes whenever the price changes.
What is a pip on USD/JPY?
0.01, the second decimal. A move from 150.00 to 150.50 is 50 pips. Many brokers show a third decimal, which is a tenth of a pip.
Why can USD/JPY stops slip so badly?
Official yen intervention and surprise Bank of Japan news have caused sudden moves of well over 100 pips in minutes. On most brokers a stop-loss becomes a market order once touched, so the fill can be worse than the stop price.
How much is one pip worth on USDJPY?
For a USD account, one pip on 1 lot is about $6.67 at the example price of 150.00, 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 USDJPY with $10,000?
It depends on your risk and stop, not on the account alone. With 1% risk and a 30 pip stop the example size is 0.50 lots, which risks $100. 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 USDJPY 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.