# Future Value Calculator

> Project what a starting amount and regular payments will grow to at a fixed rate, with yearly to monthly periods, payments at the start or end, and a growth chart.

Category: Finance · Applies to: Worldwide · Last updated: 2026-10-29
Interactive calculator: https://calculators.geekmidst.com/calculators/future-value-calculator

Future value is what money grows to when it earns a fixed rate each period. A lump sum grows by (1 + i)ⁿ; regular payments add an annuity on top.

Also called: FV calculator.

## Inputs
- Starting amount (default 1000; optional)
- Payment per period (default 100; optional)
- Interest rate (per year) (unit %; default 6)
- Years (unit years; default 10)
- Periods per year (options: Yearly, Half-yearly, Quarterly, Monthly; default 12)
- Payments made at (options: End of period, Start of period; default end)
- Currency

## Results
- Future value
- Total put in
- Interest earned

## Formula

```
FV = PV × (1 + i)ⁿ + PMT × ((1 + i)ⁿ − 1) ÷ i × (1 + i if paid at the start)
```

Where:
- i: annual rate ÷ periods per year
- n: years × periods per year
- PMT: payment each period

## Worked example
1. i = 6% ÷ 12 = 0.5% and n = 120; (1.005)¹²⁰ = 1.819397.
2. Lump sum: 1,000 × 1.819397 = $1,819.40.
3. Payments: 100 × (1.819397 − 1) ÷ 0.005 = $16,387.93; total $18,207.33.

**Result:** $1,000 plus $100 a month at 6% grows to $18,207.33 in 10 years, of which $5,207.33 is interest.

## What the result means

The gap between the two chart lines is interest. It widens over time because earlier interest earns interest of its own.

## Assumptions and limits
- A constant rate, compounded once per payment period.
- Equal payments at regular intervals.
- Tax, fees and inflation are not deducted; use the Inflation Calculator to see the result in today’s money.

## Questions

### How is this different from the compound interest calculator?

It uses one period length for both compounding and payments and lets you choose payments at the start or end of each period, the standard time-value-of-money set-up used in finance courses and spreadsheets.

### What is an annuity due?

A series of payments made at the start of each period. Each payment earns one extra period of interest, so the future value is (1 + i) times higher.

## Related calculators
- [Present Value Calculator](https://calculators.geekmidst.com/calculators/present-value-calculator)
- [Compound Interest Calculator](https://calculators.geekmidst.com/calculators/compound-interest-calculator)
- [SIP Calculator](https://calculators.geekmidst.com/calculators/sip-calculator)
- [Savings Goal Calculator](https://calculators.geekmidst.com/calculators/savings-goal-calculator)

_Returns are illustrations at a constant rate, not predictions or guarantees. Investments can lose value. This is not investment advice._

Source: GM¹X CalcVerse — https://calculators.geekmidst.com/calculators/future-value-calculator