Complete guide
Finance calculator for five time-value variables
Choose one unknown and enter the other four values. Calculator24 solves future value, present value, payment, periods or annual return and shows contributions, modeled growth and period-by-period balances.
Five-variable finance calculator
The five core values are money now, recurring payment, money later, number of periods and rate. Select exactly one output; its field becomes read-only while the other values define the scenario.
Time value of money formula
Present value compounds across n periods. A recurring-payment annuity accumulates separately. Beginning payments receive one extra period of growth.
FV = PV(1+r)ⁿ + PMT × ((1+r)ⁿ − 1) ÷ rperiodic r = annual rate ÷ periods/year ÷ 100Solve inverse values
PV and payment have algebraic solutions. Periods and rate use bounded numerical searches so the same cash-flow equation remains the source of truth.
Beginning versus end payments
End timing models an ordinary annuity. Beginning timing models an annuity due and multiplies the payment accumulation by 1+r.
Projection limits
A fixed return is a scenario, not a forecast. Market returns, fees, taxes, inflation and deposits that change over time can materially alter the result.
Variables
| Variable | Meaning |
|---|---|
| PV | Starting value |
| PMT | Recurring cash flow |
| FV | Ending value |
| N | Number of periods |
| Rate | Annual nominal return |
Frequently asked questions
What does a finance calculator solve?
It connects present value, payment, future value, periods and rate.
What is payment timing?
It states whether each recurring payment occurs at the start or end of its period.
Can it solve the return rate?
Yes, using a numerical search from 0% through 100%.
Are periods the same as years?
No. Years equal periods divided by the selected periods per year.
Does this predict investment returns?
No. It calculates a fixed-rate scenario from the values entered.
What to keep in mind
Deterministic time-value estimate. Returns are not guaranteed; taxes, fees, inflation and changing cash flows are excluded.
Results display up to 8 decimal places; exported numbers preserve calculation precision. This is a calculation summary, not an official certificate.