Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Financial
Savings Goal Calculator
Work out the monthly contribution you need to hit a specific savings target by a fixed deadline, factoring in your current balance and the interest you expect to earn along the way. Use it to size monthly deposits for a house down payment, a wedding, a car, college tuition, or any goal with a known dollar amount and timeline.
Economics
Compound Interest Calculator
Project the future value of a lump-sum investment when interest is reinvested each year using A = P · (1 + r)ᵗ. The simplest compounding model — assumes annual compounding, a constant rate, and no additional contributions or withdrawals.
Key differences
| Savings Goal Calculator | Compound Interest Calculator | |
|---|---|---|
| Category | Financial | Economics |
| Inputs required | 4 | 3 |
| Result | Monthly Savings Needed ($) | Final Amount ($) |
| What it does | Work out the monthly contribution you need to hit a specific savings target by a fixed deadline, factoring in your current balance and the interest you expect to earn along the way. Use it to size monthly deposits for a house down payment, a wedding, a car, college tuition, or any goal with a known dollar amount and timeline. | Project the future value of a lump-sum investment when interest is reinvested each year using A = P · (1 + r)ᵗ. The simplest compounding model — assumes annual compounding, a constant rate, and no additional contributions or withdrawals. |