Finance cluster
Debt & Loan Calculators
Work out loan payments, payoff timelines, APR comparisons, and debt-reduction strategies like snowball and avalanche. Covers personal loans, credit cards, student debt, and financing decisions.
Top calculators
A short starting set for the most common debt & loan calculators workflows.
Debt Consolidation Calculator - Compare Payments and Interest
Compare your current debts vs. a consolidation loan. Estimate monthly payment and total interest for up to three debts, then see potential savings (or extra...
Student Loan Income-Driven Repayment and Forgiveness Calculator
Estimate an IBR, ICR, or custom income-driven student loan payment, total paid, unpaid interest, payoff timing, and possible forgiveness using AGI and family size.
Pay Off Debt or Invest Calculator | Compare Debt Payoff and Investing
Compare paying extra toward debt against investing it, using after-tax rates and any employer match, over the horizon you choose.
HELOC vs Home Equity Loan Calculator | Compare Interest-Only and Fixed Payments
Compare a HELOC and a home equity loan by estimating interest-only draw payments, repayment costs, fixed monthly payments, and total interest under the same borrowing amount.
Car Cash Purchase vs Auto Loan Calculator - Compare Investment Opportunity Cost
Compare paying cash for a car with financing it while investing available funds, including rebates, down payments, loan APR, investment gains tax, and break-even return.
Mortgage Prepayment Penalty Calculator | Estimate Early Payoff Fees
Estimate a mortgage prepayment penalty, compare it with the interest left on your loan, and see whether paying off early could still save money.
Credit Card Balance Transfer Calculator - Compare Interest Savings
Estimate how much interest you can save by moving a credit card balance to a promotional offer with a low introductory APR.
Credit Card Interest Calculator - Estimate Billing Cycle Interest
Estimate the interest charged on a revolving credit card balance for a single billing cycle using the average daily balance method. Compare APR, balance, and cycle length to see how each factor changes the total.
All calculators in this cluster
Browse 16 calculators matched to this topic, or return to the Finance category.
Car Cash Purchase vs Auto Loan Calculator - Compare Investment Opportunity Cost
Compare paying cash for a car with financing it while investing available funds, including rebates, down payments, loan APR, investment gains tax, and break-even return.
Credit Card Balance Transfer Calculator - Compare Interest Savings
Estimate how much interest you can save by moving a credit card balance to a promotional offer with a low introductory APR.
Credit Card Interest Calculator - Estimate Billing Cycle Interest
Estimate the interest charged on a revolving credit card balance for a single billing cycle using the average daily balance method. Compare APR, balance, and cycle length to see how each factor changes the total.
Credit Card Luhn Checksum Validator - Check Card Number Structure
Check whether a card number’s digits satisfy the Luhn mod 10 checksum, calculate a replacement check digit, and understand why a passing result does not verify an account.
Credit Card Validator - Luhn Check and Card Type
Validate credit card numbers in your browser with the Luhn checksum and card-network detection. Learn how card validation works with examples and a mini-game.
Credit Score Improvement Timeline Calculator: Months to Target
Estimate how many months it may take to reach a target credit score at a chosen monthly pace, using FICO factor weights, tier bands and a projection table.
Debt Consolidation Calculator - Compare Payments and Interest
Compare your current debts vs. a consolidation loan. Estimate monthly payment and total interest for up to three debts, then see potential savings (or extra...
DSCR Calculator | Measure Debt Service Coverage from NOI and Annual Debt Service
Use this DSCR calculator to measure how net operating income covers annual debt service, estimate the maximum payment a target ratio can support, and read lender-friendly guidance on interpreting the result.
Fixed vs Adjustable-Rate Mortgage Calculator - Compare Interest Costs
Estimate total interest and payment differences between a fixed-rate mortgage and an adjustable-rate mortgage (ARM) using home price, rates and terms.
Forex Rollover Financing Calculator | Estimate Swap Carry by Position
Estimate forex rollover financing in base and quote units from pair direction, interest-rate differential, adjusted position size, day count, and calendar days held.
HELOC vs Home Equity Loan Calculator | Compare Interest-Only and Fixed Payments
Compare a HELOC and a home equity loan by estimating interest-only draw payments, repayment costs, fixed monthly payments, and total interest under the same borrowing amount.
Loan Amortization and Early Payoff Planner
Estimate fixed-rate loan payments, compare extra principal payments with a target payoff year, and see projected payoff time and interest savings.
Mortgage Prepayment Penalty Calculator | Estimate Early Payoff Fees
Estimate a mortgage prepayment penalty, compare it with the interest left on your loan, and see whether paying off early could still save money.
Mortgage Stress Test Calculator for Payment and Income Checks
Check how a higher mortgage rate changes your payment, housing ratio, and debt load before you buy or renew.
Pay Off Debt or Invest Calculator | Compare Debt Payoff and Investing
Compare paying extra toward debt against investing it, using after-tax rates and any employer match, over the horizon you choose.
Student Loan Income-Driven Repayment and Forgiveness Calculator
Estimate an IBR, ICR, or custom income-driven student loan payment, total paid, unpaid interest, payoff timing, and possible forgiveness using AGI and family size.