Calculate the correct lot size based on your risk % and stop-loss distance. Pre-loaded for Bitcoin. Adjust inputs below for instant results.
Bitcoin (BTC/USD) pip size is $1 — one pip = $1 on a standard 1 BTC contract. At $65,000/BTC, a 100-pip move = $100 P&L per BTC. Spreads range from 2–50 pips ($2–$50) depending on the broker. BTC/USD trades 24/7. Use the calculator below for your exact position size.
Calculate pip value belowPip Size
1.00
Pip Value (1 lot)
$1.00
Avg Spread
2–50 pips
Active Session
24/7
Lots = Risk Amount ÷ (SL Pips × Pip Value per Lot)
Example (BTC/USD): $10,000 acct · 1% risk · 20-pip SL on BTC/USD: $100 ÷ (20 × $1.00) = 0.001 lots
BTC/USD is the most traded cryptocurrency pair. Bitcoin trades 24/7 across crypto exchanges and CFD platforms. It is highly volatile with frequent moves of 2–5% per day. The pip size for BTC/USD is $1 — on a standard contract (1 BTC), a $100 move equals $100 P&L. Spreads vary widely between brokers.
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Compare brokers with the lowest BTC/USD spreads, best execution and reliable regulation.
1.0% risk — Professional (recommended)
Recommended Lot Size
0.50 lots
50,000 units
Risk amount
$100.00
$/pip per lot
$10.00
Stop loss
20 pips
Position Size by Risk Level
| Risk % | Risk $ | Lot Size |
|---|---|---|
| 0.5% | $50 | 0.25 |
| 1%← current | $100 | 0.50 |
| 2% | $200 | 1.00 |
| 3% | $300 | 1.50 |
Kelly Criterion
Full Kelly
25.0%
Max growth — very risky
½ Kelly (recommended)
12.5%
Standard practice
¼ Kelly (conservative)
6.3%
Smoother equity curve
K% = W − (1−W) ÷ R · where W = win rate, R = avg win ÷ avg loss. Use ½ Kelly — full Kelly causes large drawdowns from variance.
Losing Streak Probability — 55% win rate · 1.0% risk/trade
| Consecutive Losses | Probability | Balance After |
|---|---|---|
| 2 in a row | 20.25% | $9,801.00 |
| 3 in a row | 9.11% | $9,702.99 |
| 4 in a row | 4.10% | $9,605.96 |
| 5 in a row | 1.85% | $9,509.90 |
| 7 in a row | 0.37% | $9,320.65 |
| 10 in a row | 0.03% | $9,043.82 |
Probability = (1 − win rate)^N · Balance assumes fixed % risk with no adjustment between trades.
Risk of Ruin — 55% win rate · 1.5R
| Risk / Trade | Risk of Ruin |
|---|---|
| 0.5% | <0.01% |
| 1%← current | <0.01% |
| 2% | <0.01% |
| 3% | <0.01% |
Edge = W×R−(1−W) = 37.50% · RoR = ((1−edge)/(1+edge))^(100/risk%) · Assumes fixed % risk, no account top-ups.
Portfolio Risk Tracker
Formula: risk amount ÷ (stop loss pips × pip value per lot). Professional traders risk 1–2% per trade.