AUDUSD position size calculator
Size an Australian dollar trade from your risk and stop: 100,000 AUD per lot, $10 a pip, converted at the pair's price on an AUD account.
How sizing works on the Aussie
AUDUSD is the price of one Australian dollar in US dollars. A lot is 100,000 Australian dollars and a pip is 0.0001, so one pip on one lot is worth $10, and $0.10 on 0.01 lot. On a USD account this is fixed. On an AUD account the calculator converts the US-dollar loss at the AUDUSD price you type: at 0.6600 a pip per lot is $10 ÷ 0.66 = A$15.15. Because an Australian dollar is worth less than a US dollar, an AUD account pays more of its own currency per pip and trades fewer lots for the same percentage risk.
| Item | Typical value |
|---|---|
| Contract size | 100,000 Australian dollars per lot |
| Pip | 0.0001 |
| Value per pip, 1.0 lot, USD account | $10 |
| Value per pip, 1.0 lot, AUD account at 0.6600 | A$15.15 |
| Value per pip, 0.01 lot, USD account | $0.10 |
| Quote currency | US dollar |
| Trading hours | 24 hours, Sunday 17:00 to Friday 17:00 New York |
| Home session | Sydney, then Tokyo; RBA decisions at 14:30 Sydney time |
A worked example: a 14-pip stop
A $10,000 USD account risking 1% has $100 to lose. With a 14-pip stop one lot loses 14 × $10 = $140, so 100 ÷ 140 = 0.714 lots, rounded down to 0.71 lots and an actual risk of $99.40.
An A$10,000 account at 0.6600 risks A$100. One lot loses 14 × A$15.15 = A$212.12, the raw size is 0.471 and the position 0.47 lots, risking A$99.70. A$100 is worth only $66, which is why the AUD account trades fewer lots.
Volatility and typical stops
AUDUSD is a mid-range major. Its daily range in pips is usually smaller than cable's, and it is sensitive to Chinese data, commodity prices and global risk appetite as well as to Australian employment, inflation and RBA news. Intraday stops of 10 to 25 pips are common. Spreads are low through the Asian and London sessions but widen at the daily rollover. These are general tendencies; check the current range before you choose a stop.
Sessions and Kill Zones for the Aussie
Unlike the European pairs, AUDUSD has a real home session in the Asian Kill Zone, 20:00–00:00 New York time, when Sydney and Tokyo are open. The Australian Bureau of Statistics publishes at 11:30 Canberra time, between 19:30 and 21:30 New York time, so a trade opened late in the New York afternoon can still meet news before London. The London (02:00–05:00) and New York AM (07:00–10:00) Kill Zones then bring US data and deeper liquidity. See the windows in your time zone with the Kill Zone converter; today's sessions and news are on the AUDUSD market page.
Common AUDUSD sizing mistakes
- Copying an AUDUSD lot to gold. Both pay $10 per pip per lot in this calculator, but a gold stop is usually many more pips: 0.71 lots on a $10.00 gold stop would risk $710.
- Sizing an AUD account as if it were in US dollars. At 0.6600 that risks about 50% more than planned.
- Treating the Asian session as quiet for this pair, when Australian data and RBA decisions land in it.
- Confusing AUDUSD with AUDJPY, which has a 0.01 pip and a yen pip value that moves with USDJPY.
Its New Zealand neighbour has its own page, the NZDUSD calculator. The method is explained in how to calculate position size.
Frequently asked questions
How much is one pip on AUDUSD?
$10 per standard lot and $0.10 per 0.01 lot on a USD account. On an AUD account it is $10 divided by the AUDUSD price, about A$15.15 at 0.6600.
Why does my AUD account trade fewer lots?
Because each Australian dollar is worth less than a US dollar: 1% of A$10,000 is A$100, about $66 at 0.6600, so the same stop allows fewer lots.
When does AUDUSD move most?
Around Australian data and RBA decisions in the Asian session, and around US data in the New York morning. Chinese data and swings in commodities and stock markets also move it.