ClueLuma

Single sum P/F calculator

Discount one future receipt or expense to the chosen present date.

P=F(1+i)nP = \frac{F}{\left(1 + i\right)^{n}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

$
decimal
periods
$

Worked example

Given

  • FF = 100 $
  • ii = 0.08 decimal
  • nn = 10 periods
P=100(1+0.08)10≈46.319P = \frac{100}{\left(1 + 0.08\right)^{10}} \approx 46.319

Symbols and units

SymbolMeaningUnit
PPpresent amount$
FFfuture amount$
iidiscount rate per perioddecimal
nnnumber of periodsperiods

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Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.