Swap Calculator
Estimate overnight swap or rollover impact using currency-per-lot, points, or annual percent style broker quotes.
Overnight costs
Triple rollover
Multiple quote modes
Calculator suite
Plan trades before you click buy or sell.
Compare PnL, margin, position size, and overnight costs with clear assumptions and editable inputs.
Step 1
Swap inputs
Live result
Estimated swap
Total swap
-$17.50
Estimated overnight charge for the selected inputs.
Billable nights
5
Notional value
$110,000.00
Pip value per lot
$10.00
Rollover multiplier
3x
These results are estimates for planning and education. Actual outcomes can vary with spread, slippage, broker execution, conversion rates, and fee schedules.
Formula used
Currency-per-lot mode
totalSwap = swapPerLot × lotSize × billableNights
Points mode
pipValuePerLot = contractSize × pipSize × quoteToAccountRate; totalSwap = swapPoints × pipValuePerLot × lotSize × billableNights
Annual percent mode
notionalValue = lotSize × contractSize × marketPrice; totalSwap = notionalValue × annualRate% × billableNights / 360
billableNights = nights + (rolloverMultiplier - 1)
Frequently asked questions
What is swap in trading?
Swap is the overnight financing adjustment applied when a leveraged position remains open after rollover time.
What is triple swap day?
A broker may apply three days of swap in a single rollover to account for weekends. This calculator lets you set the multiplier directly.
Why can swap be positive or negative?
Depending on instrument and direction, overnight carry can become a charge or a credit. Enter signed values from your broker specification.