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M6B position size calculator
1 M6B tick = 0.0001 points = $0.63. Type your stop and risk to see how many 6B or M6B contracts to trade.
M6B contract specs
| Contract | Micro British Pound (M6B) |
|---|---|
| Tick size | 0.0001 points |
| Tick value | $0.63 per contract |
| Standard version | 6B (10× bigger, $6.25 per tick) |
Tick sizes and values follow the exchange contract specs. Check your broker before trading, since fees and margins vary.
6B and M6B stop size cheat sheet
Risk per contract for common stops, and the size closest to $250 of risk (standard contract preferred when it fits).
| Stop | 1 6B | 1 M6B | Size for ~$250 |
|---|---|---|---|
| 5 ticks (0.0005 pts) | $31.25 | $3.13 | 8 6B ($250.00) |
| 10 ticks (0.001 pts) | $62.50 | $6.25 | 4 6B ($250.00) |
| 20 ticks (0.002 pts) | $125.00 | $12.50 | 2 6B ($250.00) |
| 30 ticks (0.003 pts) | $187.50 | $18.75 | 13 M6B ($243.75) |
| 40 ticks (0.004 pts) | $250.00 | $25.00 | 1 6B ($250.00) |
| 60 ticks (0.006 pts) | $375.00 | $37.50 | 7 M6B ($262.50) |
How to calculate M6B position size
- Pick your stop: 20 ticks is 0.002 points.
- Risk per contract = ticks × tick value = 20 × $0.63 = $12.50.
- Contracts = your risk ÷ risk per contract, rounded to a whole number that stays inside your range.
Entering prices instead? The stop distance is entry minus stop, divided by the tick size (0.0001) to get ticks. See the full guide: how to calculate futures position size.
Questions
What is the tick value of M6B?
One M6B tick is 0.0001 points and is worth $0.63 per contract.
How many M6B contracts should I trade?
Divide the dollars you are willing to lose by the risk of one contract. With a 20-tick stop, one M6B risks $12.50. For a $500 risk and a 40-tick stop, the calculator suggests 2 6B ($500.00).
What is the micro version of 6B?
M6B (Micro British Pound) is the micro contract. It is 1/10 the size of 6B: 10 M6B move the same dollars as 1 6B. One M6B tick is worth $0.63.
Should I trade 6B or M6B?
Use 6B when its size lands inside your risk range, because one standard contract usually costs less in commissions than 10 micros. Use M6B when a single 6B would risk more than your maximum, or when you need finer steps. The calculator marks the best fit as “Best pick”.
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