Everyday Math

4 calculators and 4 guides in this category.

Calculators

See how your savings grow over time with compound interest and optional monthly contributions.

Project how big your retirement nest egg could grow based on your savings, contributions and expected return.

Find out how much to save each month to reach a savings goal by a target date.

Calculate the return on investment as a percentage, plus net profit and annualized return.

ROI tells you whether something was worth the money — but only if you calculate it correctly. Here's how to do it and avoid the common traps.

An emergency fund is the foundation of financial stability. Here's how much you need, where to keep it, and how to build one even on a tight budget.

It's the question everyone worries about. Here are practical benchmarks and a simple way to find a retirement savings target that fits you.

Compound interest is the most powerful force in personal finance. Here's what it is, why it matters so much, and how to make it work for you.