Money tools default to US dollars (USD). Links marked Korean open a Korean page.
💰 Finance calculators
Finance calculator collection
Explore loan repayments, debt-to-income ratios, ETF growth and FIRE goals in one place. These free calculators work in your browser without installation or registration. Each tool explains its assumptions, calculation rules and limitations. Results are estimates for comparing scenarios.
Which tool should you use?
If you choose the situation first, you can go straight to the matching tool.
Distinctions between easily confused tools
Hourly pay or debt-to-income ratio?
Use the hourly wage calculator to convert earnings and working time into an hourly rate. Use the debt-to-income ratio calculator to compare income with debt payments. Check the income basis and assumptions shown by each tool.
Loan interest calculator vs DSR calculator
The loan interest calculator answers 'how much you repay if you assume you have already borrowed,' and the DSR calculator answers 'how much you can borrow in the first place.' If you want to know the limit, look at the DSR first, and when you compare the repayment burden within the limit, move on to the loan interest calculator.
Loan repayment or debt-to-income ratio?
Use the loan interest calculator to compare repayment schedules, monthly payments and total interest. Use the debt-to-income ratio calculator to compare those payments with your income. Actual lending terms and eligibility depend on the lender and your contract.
ETF regular-contribution compound calculator vs ETF comparison calculator
The regular-contribution compound calculator looks at the difference that time makes when you hold one product for a long time, and the comparison calculator looks at the difference that the gap in total expense ratio between two products makes. If you want to know 'how long,' it is the former. If you want to know 'which product,' it is the latter.
Compound savings or FIRE goals?
The compound interest calculator models how contributions and assumed returns change savings over time. The FIRE calculator connects spending, savings and a withdrawal-rate assumption to an estimated goal and timeline. Neither guarantees a future balance or retirement date.
Tools to use together
Frequently asked questions
Are Toolvil finance calculators accurate?
These are reference estimates based on published tax rates, rates, and formulas. Each calculator displays the calculation basis, the source, and the review date, and actual billing, loan approval, and taxes follow the latest standards and review of the relevant institution. Before an important decision, check again with official materials.
Are the income or amounts you enter saved on the server?
No. Finance calculators calculate entered values only in the browser and do not send them to a server or save them. Login or installation is not required either.
Which calculator should I use first?
Choose by task: hourly wage for earnings per hour, debt-to-income ratio and loan interest for repayment scenarios, and ETF or FIRE calculators for long-term savings assumptions. Check each tool’s stated scope before interpreting the result.