Loans
Loan Payment Calculator
Estimate monthly payments, total interest, financed cost, and payoff timing.
Complete calculator directory
All finance calculators in one searchable directory.
Choose a calculator by task, category, or planning question. Every tool is educational, browser-based, and paired with methodology notes so users can understand the assumptions behind the result.
Directory trust notes
- Educational estimates
- Transparent assumptions
- No account required
- Related guides linked
Decision guide
Which calculator should I use?
Start with the user question, not the formula name. These quick paths route visitors to the most useful first tool, then the calculator pages link onward to related guides and follow-up tools.
I need a monthly payment Use the loan payment calculator first, then compare offers if you have multiple quotes. I am looking at a home Start with mortgage payment, then test rent affordability or buy-vs-rent if you are still choosing. I want to reduce debt Estimate payoff timing, then compare credit card payoff or minimum payment cost for revolving debt. I want money to grow Model compounding, then compare APY, CD, retirement, or savings-goal assumptions. I need a budget check Review cash flow first, then test emergency fund, rent affordability, DTI, or net worth.
Most popular starting points
These are the broad tools users usually need before moving into a narrower calculator.
Housing
Mortgage Payment Calculator
Estimate principal, interest, tax, insurance, PMI, HOA, and extra payment effects.
Housing
Home Affordability Calculator
Estimate an affordable home price from income, debts, down payment, rate, taxes, insurance, and a target DTI.
Loans
Loan Comparison Calculator
Compare two fixed-rate loan offers by payment, fees, term, and total cost.
Housing
Buy vs Rent Calculator
Compare simplified buying and renting assumptions over a chosen time horizon.
Savings & investing
Compound Interest Calculator
Model savings growth with regular contributions and compounding assumptions.
Savings & investing
Money Market Calculator
Estimate money market account growth from opening deposit, monthly deposits, APY, and term so you can compare cash-yield scenarios.
Savings & investing
Retirement Savings Calculator
Project a simple retirement savings balance from contributions and return assumptions.
Debt
Debt Payoff Calculator
Estimate payoff time and interest cost with a fixed debt payment and optional extra amount.
Budgeting
Monthly Budget Calculator
Organize income, fixed spending, flexible spending, debt payments, and savings.
Browse by category
Loans
Monthly payments, loan comparisons, affordability, auto loans, and total borrowing cost.
4 toolsHousing
Mortgage payments, refinancing, extra payments, rent affordability, and buy-vs-rent tradeoffs.
7 toolsDebt
Credit card payoff, debt payoff timing, minimum-payment cost, and debt-to-income ratio.
9 toolsSavings & investing
Compounding, retirement savings, CDs, savings goals, APY comparison, and withdrawals.
6 toolsBudgeting
Monthly budget, emergency fund, net worth, rent affordability, and household cash-flow estimates.
3 toolsInterest & inflation
Simple interest, compound interest, APY, CDs, and inflation/purchasing-power assumptions.
5 toolsAll calculator pages
Search by calculator name, topic, goal, or category. Use category buttons to narrow the full inventory.
Showing all calculators.
Loans
Loan Payment Calculator
Estimate monthly payments, total interest, financed cost, and payoff timing.
Best for: Estimate a fixed loan payment
Housing
Mortgage Payment Calculator
Estimate principal, interest, tax, insurance, PMI, HOA, and extra payment effects.
Best for: Estimate a home loan payment
Housing
Home Affordability Calculator
Estimate an affordable home price from income, debts, down payment, rate, taxes, insurance, and a target DTI.
Best for: Estimate a home price range from income and debt assumptions
Housing
Mortgage Refinance Calculator
Compare a new mortgage payment, cash-out amount, closing costs, and break-even point.
Best for: Test whether refinancing may lower monthly cost
Housing
Mortgage Extra Payment Calculator
Estimate payoff time and interest savings from extra principal payments.
Best for: See how extra payments change payoff timing
Housing
Mortgage Payoff Calculator
Estimate payoff time, interest savings, and target extra payment from a current mortgage balance.
Best for: Estimate mortgage payoff timing
Loans
Auto Loan Calculator
Estimate vehicle financing with tax, fees, down payment, trade-in, rebate, and extra payments.
Best for: Estimate car financing cost
Loans
Loan Comparison Calculator
Compare two fixed-rate loan offers by payment, fees, term, and total cost.
Best for: Choose between two loan offers
Debt
Weighted Average Interest Rate Calculator
Calculate a balance-weighted average rate across multiple loans, cards, or debt balances.
Best for: Find a blended interest rate across balances
Loans
Personal Loan Affordability Calculator
Estimate the loan amount supported by a target monthly payment and APR.
Best for: Back into an affordable loan amount
Housing
Buy vs Rent Calculator
Compare simplified buying and renting assumptions over a chosen time horizon.
Best for: Compare renting and buying scenarios
Debt
Credit Card Payoff Calculator
Estimate credit card payoff time, interest cost, extra payments, and transfer-fee scenarios.
Best for: Plan a credit card payoff
Debt
Average Daily Balance Calculator
Estimate credit card average daily balance, daily periodic interest, and billing-cycle interest from transaction timing.
Best for: Estimate credit card daily interest timing
Debt
Credit Utilization Calculator
Calculate total and per-card utilization from balances, limits, planned payments, and a target ratio.
Best for: Estimate credit utilization ratios
Debt
Balance Transfer Calculator
Compare current credit card payoff cost with transfer fee, promotional APR, and post-promo APR assumptions.
Best for: Compare balance transfer cost scenarios
Debt
Credit Card Minimum Payment Calculator
Calculate a simplified credit card minimum payment, payoff time, and total interest from balance, APR, percentage, and dollar-floor assumptions.
Best for: Understand minimum payment cost
Savings & investing
Compound Interest Calculator
Model savings growth with regular contributions and compounding assumptions.
Best for: Project compounding growth
Interest & inflation
Simple Interest Calculator
Calculate non-compounding interest from principal, rate, and time.
Best for: Calculate simple interest
Savings & investing
CD Calculator
Estimate certificate of deposit maturity value from deposit, APY, and term.
Best for: Estimate CD maturity value
Savings & investing
Money Market Calculator
Estimate money market account growth from opening deposit, monthly deposits, APY, and term so you can compare cash-yield scenarios.
Best for: Estimate money market interest and balance growth
Savings & investing
Retirement Savings Calculator
Project a simple retirement savings balance from contributions and return assumptions.
Best for: Estimate long-term retirement savings
Savings & investing
Savings Withdrawal Calculator
Estimate how long money or savings may last with fixed monthly withdrawals, return assumptions, and drawdown stress tests.
Best for: Estimate savings drawdown timing
Interest & inflation
APY Comparison Calculator
Compare savings yields with different APYs and compounding assumptions.
Best for: Compare APY offers
Interest & inflation
Effective Annual Rate Calculator
Convert a nominal annual rate and compounding frequency into an effective annual rate.
Best for: Calculate effective annual rate
Interest & inflation
APR to APY Calculator
Convert APR or a stated annual rate into estimated APY from compounding frequency for cleaner yield comparisons.
Best for: Convert APR to APY
Interest & inflation
Inflation Calculator
Estimate future cost and purchasing-power changes from an inflation assumption.
Best for: Translate today’s cost into future dollars
Savings & investing
Savings Goal Calculator
Estimate the monthly amount needed to reach a target savings balance.
Best for: Set a savings contribution target
Debt
Debt Payoff Calculator
Estimate payoff time and interest cost with a fixed debt payment and optional extra amount.
Best for: Plan debt payoff timing
Debt
Debt Avalanche Calculator
Estimate a highest-APR debt payoff order with minimum payments, extra payment, and payment rollover.
Best for: Plan avalanche method payoff order
Budgeting
Emergency Fund Calculator
Estimate a practical emergency fund target from monthly essential expenses.
Best for: Estimate a safety-buffer target
Housing
Rent Affordability Calculator
Estimate a simple rent ceiling from income, recurring costs, and target rent share.
Best for: Estimate a rent range
Budgeting
Monthly Budget Calculator
Organize income, fixed spending, flexible spending, debt payments, and savings.
Best for: Review monthly cash flow
Debt
Debt-to-Income Ratio Calculator
Compare monthly debt payments with gross monthly income.
Best for: Estimate debt-to-income ratio
Budgeting
Net Worth Calculator
Add assets and liabilities to understand a simplified current net worth position.
Best for: Summarize assets minus liabilities
How to read these tools
Calculator outputs are simplified estimates. They can make assumptions visible, compare scenarios, and prepare better questions, but they do not replace lender disclosures, official tax rules, legal documents, or qualified professional advice.
For stronger estimates, change one input at a time and compare the result with a baseline. If a decision depends on taxes, fees, eligibility, insurance, or investment risk, review source documents before acting.