Blog
Lot sizing is where most forex traders blow their accounts. They pick a "round number" like 0.10 or 1.00 lots without calculating whether it matches their risk. A lot size calculator takes your account size, risk tolerance, and stop loss distance and gives you the exact lot size — no mental math, no guessing.
Enter your account, risk %, and stop loss — get your exact lot size in seconds.
Open Position Size Calculator| Lot Type | Units | 1 Pip Value (EUR/USD) | Typical Account Size |
|---|---|---|---|
| Standard (1.00) | 100,000 | ~$10.00 | $10,000+ |
| Mini (0.10) | 10,000 | ~$1.00 | $1,000-$10,000 |
| Micro (0.01) | 1,000 | ~$0.10 | $100-$1,000 |
| Nano (0.001) | 100 | ~$0.01 | Under $100 |
The lot size you trade determines how much money each pip is worth. Trading 1 standard lot on EUR/USD means every pip movement equals roughly $10. A 50-pip loss at 1 standard lot = $500.
Or skip the math entirely and use the calculator. Enter your numbers, get your lot size.
| Account | 1% Risk | 30-Pip Stop | Max Lot Size | Lot Type |
|---|---|---|---|---|
| $100 | $1.00 | $0.03/pip | 0.003 | Nano/micro |
| $500 | $5.00 | $0.17/pip | 0.017 | Micro |
| $1,000 | $10.00 | $0.33/pip | 0.033 | Micro |
| $5,000 | $50.00 | $1.67/pip | 0.167 | Mini |
| $10,000 | $100.00 | $3.33/pip | 0.333 | Mini |
| $25,000 | $250.00 | $8.33/pip | 0.833 | Standard |
| $50,000 | $500.00 | $16.67/pip | 1.667 | Standard |
| $100,000 | $1,000.00 | $33.33/pip | 3.333 | Standard |
All calculations assume EUR/USD with a 30-pip stop loss at 1% risk. Different pairs and stop distances change the lot size.
Using the same lot size for every trade regardless of stop loss distance. A 20-pip stop and a 100-pip stop are completely different risk profiles:
| Stop Loss | Same 0.10 Lot | Actual Risk ($10K Account) | Risk % |
|---|---|---|---|
| 20 pips | $20 loss | $20 | 0.2% |
| 50 pips | $50 loss | $50 | 0.5% |
| 100 pips | $100 loss | $100 | 1.0% |
| 200 pips | $200 loss | $200 | 2.0% |
The trader using 0.10 lots on every trade thinks they are "consistent." They are not. Their risk swings from 0.2% to 2% depending on the stop distance. A position size calculator adjusts the lot size for each trade so the dollar risk stays constant.
Gold has different pip values than currency pairs. On most brokers, 1 pip on gold = $0.10 per micro lot (0.01), $1.00 per mini lot (0.10), or $10.00 per standard lot (1.00). Gold is volatile — typical stop losses are 100-300 pips, so you need smaller lot sizes than you might expect.
For a $10,000 account risking 1% ($100) with a 200-pip stop on gold: $100 / (200 x $10) = 0.05 lots.
Calculate your exact lot size for any forex pair, gold, or CFD.
Open Lot Size Calculator