Investment Calculators
Free investment calculators to model returns, growth, and long-term wealth. Compound interest, dollar-cost averaging, retirement projections — all with verified math, 25 currencies, no signup required.
Compound interest is one of the most powerful forces in personal finance, but the math gets opaque quickly — especially over decades. Our investment calculators turn that math into clear, comparable numbers so you can see the impact of starting earlier, contributing more, or earning slightly higher returns. Every formula matches what banks and financial planners actually use.
Comparing investment returns against debt paydown is a classic personal-finance decision. See the Lump Sum Repayment Calculator to compare guaranteed mortgage interest savings against expected market returns, or the Car Loan vs Cash Calculator for the same trade-off on consumer purchases.
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Investment calculators are educational tools only. Not financial advice, not a recommendation to buy or sell any investment. Always consult a qualified financial advisor for decisions about your money. Last reviewed: May 2026. See full disclosure.