Bitcoin CFDs are sized in coins and stops are set in dollars, and both numbers are large: one lot is 1 BTC, a $1 move is $1 per lot, and Bitcoin routinely moves 2–4% in a day — thousands of dollars at current prices. Traders who size Bitcoin with forex habits end up with either a position too small to matter or a stop too tight to survive. This calculator uses the contract as brokers actually quote it: enter your balance, risk and stop in dollars and it returns the position size in lots (coins).
BTC/USD CFD contract facts
| Item | Value |
|---|---|
| Standard lot | 1 BTC |
| Micro lot (0.01) | 0.01 BTC |
| Price move of $1, 1 lot | $1 |
| Price move of $100, 1 lot | $100 |
| Price move of $1,000, 1 lot | $1,000 |
| Typical spread | $20–60 on major CFD brokers; wider overnight and at weekends |
| Typical daily range | roughly 2–4% of price; 6–10% on volatile days |
| Trading hours | 24/7 on most CFD brokers; some close for a weekend maintenance window |
The calculator on this page treats one "pip" as a $1 move, so enter your stop distance in dollars. Some brokers quote a minimum lot of 0.1 BTC rather than 0.01; check your contract specification.
The lot size formula for Bitcoin
Lot size (BTC) = (Account balance × Risk %) ÷ Stop distance in $Because one lot is one coin and a $1 move is $1, the pip value is simply 1 and drops out.
Example 1 — $10,000 account, 1% risk, $1,500 stop:
- Risk amount: $100
- Loss per lot: $1,500
- Lot size: 0.067 BTC
Example 2 — $5,000 account, 1% risk, $800 stop:
- Risk amount: $50
- Lot size: 0.063 BTC
Example 3 — $100,000 prop-firm account, 0.5% risk, $2,000 stop:
- Risk amount: $500
- Lot size: 0.25 BTC
Quick reference: Bitcoin position size at 1% risk
| Account | $500 stop | $1,000 stop | $1,500 stop | $3,000 stop |
|---|---|---|---|---|
| $1,000 | 0.02 | 0.01 | 0.007 | 0.003 |
| $5,000 | 0.10 | 0.05 | 0.033 | 0.017 |
| $10,000 | 0.20 | 0.10 | 0.067 | 0.033 |
| $50,000 | 1.00 | 0.50 | 0.333 | 0.167 |
| $100,000 | 2.00 | 1.00 | 0.667 | 0.333 |
If your broker's minimum is 0.01 BTC, sizes below that cannot be traded at 1% risk — the trade is too large for the account at that stop. Halve for 0.5% risk; double for 2%.
What makes Bitcoin different
- Set stops in percent, then convert. A stop that is 1.5% of price is about $1,000 at $65,000 and $1,500 at $100,000. Thinking in percent keeps the stop proportional as the price level changes; the calculator converts it to lots.
- It never closes. Weekend and overnight moves are common and the CFD spread widens when spot liquidity is thin. A position held through Sunday is a position sized for a gap.
- Volatility clusters. Quiet weeks with 1% days are followed by weeks with 8% days. An ATR-based stop (1–1.5 × ATR(14)) adapts; a fixed dollar stop does not.
- Funding and swaps are large. CFD overnight charges on crypto are typically far higher than on forex. Multi-day positions carry a real cost that should be part of the risk calculation.
- It correlates with risk assets. Bitcoin often trades with the NASDAQ, especially during US hours. A long BTC and a long NAS100 is one bet at larger size.
Common Bitcoin sizing mistakes
- Sizing in dollars of notional instead of dollars of risk. "I'll buy $2,000 of Bitcoin" says nothing about the loss if the stop is hit. Size from the stop.
- Stops inside a single hourly candle. A $300 stop at a $70,000 price is 0.4% — inside the noise on most days.
- Ignoring the spread. $40 on a $500 stop is 8%; on a $200 stop it is 20%. Add it.
- Round-number stops. Stops sitting exactly at $60,000 or $100,000 get run. Give them a buffer.
- Leverage as a size guide. 1:10 or 1:20 crypto leverage lets a small account open a position whose stop-out is a third of the balance. The formula, not the leverage, decides the size.
Track your Bitcoin trades in Fips
Fips's free trading journal records every crypto trade with its dollar result and R-multiple, so you can see whether your stops are systematically too tight for Bitcoin's range and whether your weekend trades cost more than your weekday ones. Connect a supported exchange or CFD account and trades import automatically. Backtest a Bitcoin setup to see its behaviour through past volatility spikes before you size it live.
Frequently asked questions
How is lot size calculated for Bitcoin?
Divide your dollar risk by your stop distance in dollars. $100 of risk with a $1,500 stop is 0.067 BTC. One lot is one coin on most CFD brokers, so that is 0.067 lots.
What lot size should I use on a $10,000 Bitcoin account?
At 1% risk and a $1,500 stop, 0.067 BTC. At a $3,000 stop, 0.033 BTC. Size follows the stop.
What is a reasonable stop loss on Bitcoin?
Intraday setups commonly use 1–2% of price; swing setups 4–8%. In dollars that depends on the price level, which is why thinking in percent and converting is safer than memorising a figure.
Can I trade Bitcoin on a $1,000 account?
At 1% risk and a $1,000 stop, 0.01 BTC — the minimum on many brokers. Any tighter stop or smaller account cannot be sized to 1% risk; the alternative is a smaller risk percentage, not a bigger position.