Free investment calculators
Ten tools for planning long-term ETF investing — each answers one question clearly, with every assumption on show.
ETF Investment Calculator
See what a lump sum plus monthly investing could grow to.
Side by sideETF Comparison Calculator
Put two ETFs head to head over your timeline.
Reverse the mathHow Much to Invest Monthly
Work back from a goal to the monthly amount you need.
Timing questionLump Sum vs Monthly Investing
All at once, or spread out? See both paths.
DividendsAccumulating vs Distributing
Reinvested dividends versus paid-out income.
Hidden costsETF Fee Calculator
What a small fee difference costs over decades.
Freedom numberFIRE Calculator
When could investing cover your living costs?
Real moneyInflation-Adjusted Returns
Your future balance in today's money.
FX effectCurrency Impact Calculator
How exchange rates change your real result.
Tax dragWithholding Tax Calculator
Irish-domiciled or US-domiciled? See the drag.
Not sure where to start?
If you're new to investing, begin with the ETF Investment Calculator to see what a regular monthly amount could grow to, then read ETF investing for beginners. Choosing between two funds? The ETF Comparison Calculator and the ETF Fee Calculator show what the differences cost.