Save & Invest
How much will my money grow?
Borrowing and saving are the same maths pointed in opposite directions: here compounding works for you. These tools show how consistent deposits and time turn small amounts into large balances — and why starting early usually beats saving more later.
- Compound Interest Calculator The core of growth — compounding with regular contributions. Open calculator
- Investment Calculator Project an investment with monthly contributions over time. Open calculator
- Savings Calculator Reach a savings goal, or project where deposits will take you. Open calculator
- Retirement Calculator Project your nest egg and the income it could provide. Open calculator
- Interest Calculator Compare simple and compound interest side by side. Open calculator
- Simple Interest Calculator Straight-line interest with the I = P × r × t formula. Open calculator
- Inflation Calculator See what your money will really be worth in future. Open calculator
Reference tables
At-a-glance tables you can cite, print or embed — computed from the same formulas as the calculators.
- Savings growth table How $10,000 grows with compound interest across annual returns of 2% to 10% over 5 to 40 years — a reference for the power of compounding. View the table →
- Monthly investment table How a recurring monthly investment grows at a 7% annual return over 10 to 40 years — from $100 to $2,000 a month. View the table →
- Inflation table What $100 held as cash will be worth in today’s money after 5 to 50 years at annual inflation rates of 2% to 5%. View the table →
Guides on this topic
- Compound Interest: How Your Money Grows Understand compound interest in plain English — how it works, why time matters more than timing, and how regular contributions turn small savings into large balances.
- Simple Interest Explained What simple interest is, the formula behind it, where you'll encounter it, and how it differs from the compound interest that grows savings.
- Investing for Beginners: Make Your Money Grow A plain-English starter guide to investing — why compounding matters, how to think about risk, what to actually invest in, and how to begin with any budget.