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Calculator directory

Every tool you need.

Professional-grade financial calculators, free forever. Pick the one that matches your question.

Compound interest

See how your money grows when returns compound over time.

Investing · 30 sec

Mortgage calculator

Calculate monthly payments, total interest, and amortization.

Borrowing · 1 min

Investment growth

Model lump sum or regular contributions over any timeframe.

Investing · 1 min

Loan calculator

Payment schedules and interest breakdown for any loan type.

Borrowing · 30 sec

Retirement planner

Project the nest egg you'll have and what it produces monthly.

Planning · 2 min

Savings goal

Reverse-engineer the monthly deposit needed to hit your target.

Saving · 30 sec

Rent vs. buy

Compare the true cost of renting against buying over time.

Real estate · 2 min

Salary to hourly

Convert between hourly wage and annual salary, with overtime.

Income · 30 sec

Coast FIRE

Find the savings level where compounding funds retirement alone.

Planning · 1 min

CD calculator

Certificate of deposit growth, early-withdrawal costs, and ladders.

Saving · 1 min

HYSA calculator

High-yield savings growth versus the national average rate.

Saving · 30 sec

RMD calculator

Required minimum distributions under current IRS rules.

Planning · 1 min

Disclaimer: Financial calculators are for educational purposes only. Not financial advice. Consult professionals before making decisions.

Risks: All investments carry risks. Past performance doesn't guarantee future results. Verify calculations independently.

Important Disclaimer: The financial calculators and tools provided on this website are for educational and informational purposes only. They are not intended to provide financial advice, and should not be considered as a substitute for professional financial consultation.

Investment Risks: All investments carry inherent risks, including the potential loss of principal. Past performance does not guarantee future results. The calculations and projections shown are estimates based on the information you provide and may not reflect actual investment outcomes.

Accuracy: While we strive for accuracy, we cannot guarantee that the calculations are error-free or suitable for your specific financial situation. Always consult with a qualified financial advisor, accountant, or tax professional before making any financial decisions.

No Liability: Fin Tools Lab and its operators are not responsible for any financial losses, damages, or decisions made based on the use of these calculators. Users should independently verify all calculations and consult with appropriate professionals.