Forex Trading Calculator
Build professional Forex trade plans with risk-based lot sizing, pip-value analytics, leverage margin checks, cost-aware net P&L, and expectancy modeling.
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Execution engine
Forex setup and risk assumptions
Build a trade plan with institutional-style sizing, margin impact, and expectancy. Advanced mode adds realistic friction and carry assumptions.
Advanced mode
Include spread, slippage, commission, swap carry, quote conversion, and win-rate based expectancy.
Risk budget
USD 100.00
Optimal lot size
0.16
Required margin
USD 173.60
Reward-to-risk
2.00x
Stop distance
60.0 pips
Target distance
120.0 pips
Pip value (1 lot)
USD 10.00
Trade economics
Net P&L model
Includes gross move, friction costs, and carry assumptions based on your selected holding period.
Gross profit at target
USD 192.00
Net profit at target
USD 192.00
Net loss at stop
USD 96.00
Total costs per lot
USD 0.00
Performance intelligence
Expectancy and break-even profile
Estimate system quality by combining your payoff profile with realistic win-rate assumptions.
Break-even win rate
33.3%
Expectancy per trade
USD 42.24
Risk per lot (all-in)
USD 600.00
Includes stop move + spread + slippage + commission + carry.
| Scenario | Win rate | Expected value |
|---|---|---|
| Conservative | 35.0% | USD 4.80 |
| Base case | 48.0% | USD 42.24 |
| Strong execution | 55.0% | USD 62.40 |
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Perspective
Strong FX execution starts before the order is placed
Most retail trade plans focus on entry and target but skip position engineering. Professional workflows begin with risk budget, stop structure, and execution friction, then derive lot size from those constraints.
Leverage can make a setup look small in margin terms while still being oversized in risk terms. That is why this calculator surfaces both risk-per-trade and margin usage in the same output.
A strategy can have attractive reward-to-risk and still underperform if win rate is below break-even once realistic costs are included. Expectancy analysis keeps the decision grounded in repeatable edge, not single-trade optimism.
FAQ
Common questions
How is lot size calculated in this Forex tool?
The calculator allocates your selected risk budget across the stop-loss distance in pips, then includes spread, slippage, commission, and swap assumptions when advanced mode is enabled. The result is a risk-adjusted lot size rather than a purely theoretical size.
Why does break-even win rate matter?
Break-even win rate tells you the minimum hit rate needed for your current payoff profile to avoid negative expectancy. It is a quick way to check whether the setup remains viable after trading costs.
Does leverage change trade risk?
Leverage mainly changes margin requirement, not the stop-loss risk itself. Trade risk is determined by position size and distance to stop. High leverage can still be dangerous because it makes oversizing easier.
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