Loan Interest Calculator
Estimate monthly payment and total interest from loan amount, rate, and term.
OpenFinance Calculator Hub
Make Financial Calculations Simple
Money Toolbox brings together the calculators people use most often, from loan repayment and compounding to salary take-home pay, housing-cost comparison, long-term savings planning, and the MA200 stock scanner.
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Use the category filter to jump straight to the tools you need.
Popular Finance Calculators
Browse calculators for loans, investing, personal finance, salary, and tax from one hub page.
Browse all 13 calculators.
Amortization Calculator
Review a fixed-payment amortization plan with monthly schedule and total repayment.
OpenMortgage Calculator
Check mortgage repayment, total interest, LTV, and DSR in one place.
OpenDSR Calculator
Add monthly loan payments and compare them against annual income to estimate DSR.
OpenCompound Interest Calculator
Project future value with initial capital, recurring contributions, and compounding.
OpenMA200 Touch Scanner
Track major US stocks around their 200-day moving average with touch count and signal state.
OpenDividend Calculator
Estimate dividend yield, net dividend income, and a simple reinvestment scenario.
OpenGoal Planner
Turn a long-term savings target into a monthly budget plan with stable, balanced, and aggressive options.
OpenSavings Calculator
Calculate maturity value and total interest for recurring monthly savings.
OpenTime Deposit Calculator
Estimate maturity proceeds and after-tax interest for a lump-sum time deposit.
OpenJeonse vs Monthly Rent Calculator
Compare two-year housing cost between jeonse financing and monthly rent.
OpenSalary Take-Home Calculator
Estimate monthly net pay after insurance and tax deductions.
OpenSeverance Pay Calculator
Estimate severance pay from service period and average wage.
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Featured Calculators
Start with the tools visitors use most often.
Loan Interest Calculator
Review monthly loan cost before committing to a repayment plan.
OpenCompound Interest Calculator
Measure how recurring investment and time work together in long-term growth.
OpenSalary Take-Home Calculator
Convert gross salary into practical monthly cash flow for planning.
OpenGoal Planner
Break a future savings target into realistic monthly saving and investing ratios.
OpenMA200 Touch Scanner
Use MA200 distance and touch count to review large-cap US stocks quickly.
OpenFinance Guides
Pair the calculators with practical finance articles for better decisions.
How Loan Interest Works
See how interest rate, term, and repayment type change total borrowing cost.
Read ArticleWhy Compounding Matters
Understand why time in the market matters as much as contribution size.
Read ArticleHow to Use a Goal Planner
Turn a long-term savings target into a workable monthly plan.
Read ArticleWhy Salary and Take-Home Pay Differ
Review the tax and insurance items that reduce monthly net pay.
Read ArticleFAQ
Common questions about the service and how to use the calculators.
No. Money Toolbox is a planning aid. Real product results can differ by rate type, fees, exact payment date, tax treatment, and institution policy.
Loan pages use standard repayment formulas such as annuity, equal principal, or bullet repayment. Check the detailed page for the exact method used by each calculator.
Yes. The site is responsive and built to work on phone, tablet, and desktop screens with the same core tools and filters.
Yes. The Goal Planner helps you compare monthly saving and investing capacity against a long-term target amount and period.
No. The calculators and guide pages are available without account creation.
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