Free, simple calculators to help you budget, save, invest, and manage risk. No sign-up required – everything runs in your browser, and we don’t store the numbers you enter.
Budgeting and Saving
- 50/30/20 Budget Calculator – split your take-home pay into needs, wants, and savings.
- Emergency Fund Calculator – find your target and how long it will take to build.
- Savings Goal Calculator – how much to save each month for a big goal.
- Debt Payoff Calculator – compare the snowball and avalanche methods.
- Inflation Calculator – see how inflation affects purchasing power.
Investing
- Compound Interest Calculator – estimate how savings could grow over time.
- Investment Fee Calculator – see what a 1% fee could cost over decades.
- Portfolio Rebalancing Calculator – what to buy or sell to return to your target mix.
- Irish vs. U.S. ETF Tax Cost Calculator – for non-U.S. investors: dividend tax, fees, and estate tax exposure.
Trading and Risk
- Position Size Calculator – how many shares to trade based on your stop-loss.
- Loss Recovery Calculator – the gain needed to break even after a loss.
New to Personal Finance?
Start with our step-by-step learning path, which organizes all our guides from budgeting basics to portfolio management.
All tools are for general educational purposes only and are not financial, investment, or tax advice. See our Disclaimer.