Loan Calculators: Which One Do You Need?
CalcHub has 10 separate loan and debt tools instead of one generic "loan calculator" because the right question changes depending on what you're actually deciding. This guide is a quick map from your situation to the tool that answers it.
Quick picker
- Buying a car or taking a personal loan? Start with the Loan Payment Calculator — or the Auto Loan Calculator specifically if you're trading in a car or putting money down.
- Buying a house? Use the Mortgage Calculator (full monthly cost including taxes and insurance) alongside the Down Payment Calculator (how much cash you need upfront and whether you'll pay PMI).
- Already have a loan and want to see it paid off faster? The Debt Payoff Calculator handles one balance; the Mortgage Payoff Calculator is the mortgage-specific version that models extra principal payments.
- Carrying balances on more than one debt? The Debt Consolidation Calculator tells you honestly whether combining them into one new loan would actually save money.
- Only making credit card minimum payments? The Credit Card Minimum Payment Calculator shows how many years that really takes and what it costs in interest — usually a wake-up-call number.
- Need the full payment-by-payment breakdown? The Amortization Schedule Generator shows every single payment split into principal and interest.
- Have student loans? The Student Loan Calculator compares a standard 10-year payoff against a simplified income-driven repayment estimate.
Worked scenario: buying a $350,000 house
This is the kind of decision that actually needs three or four of these tools in sequence, not just one:
- Start with the Down Payment Calculator to see what a 10%, 15%, or 20% down payment actually costs in cash, and whether staying under 20% triggers PMI on top of the mortgage payment.
- Plug the resulting loan amount into the Mortgage Calculator to get the real monthly payment — principal, interest, taxes, and insurance together, not just the loan math alone.
- If the monthly number is tight against your budget, run the Rent vs. Buy Calculator (in the Everyday category) to see whether buying actually beats renting once the money tied up in a down payment is accounted for.
- Once you're in the mortgage, revisit the Mortgage Payoff Calculator any time you have extra cash — even a modest extra principal payment early in a 30-year loan saves years and real interest, because so little of an early payment goes to principal in the first place.
All loan & debt tools
- Loan Payment Calculator Work out your exact monthly payment, total interest, and payoff cost for any loan.
- Mortgage Calculator Estimate your full monthly mortgage payment — principal, interest, taxes, and insurance included.
- Auto Loan Calculator See your real car payment after down payment and trade-in, plus total interest over the loan.
- Debt Payoff Calculator Find out how many months your balance will take to clear and what the interest really costs.
- Mortgage Payoff Calculator See how extra monthly payments shorten your mortgage and how much interest they save.
- Down Payment Calculator Turn a home price into the down payment you'll need — and see how loan size and PMI risk change with it.
- Credit Card Minimum Payment Calculator See how long paying only the minimum really takes — and what it costs you in interest.
- Amortization Schedule Generator See every payment of a loan broken into principal and interest, month by month.
- Student Loan Calculator Compare the standard 10-year repayment plan against an income-driven plan, and see the real payoff timeline and total interest for your student loans.
- Debt Consolidation Calculator See whether combining multiple debts into one new loan actually lowers your total interest and monthly payment.
Frequently asked questions
I just want to know my monthly payment — which calculator do I use?
For a car, personal loan, or any general loan, use the Loan Payment Calculator. For a house specifically, use the Mortgage Calculator instead — it adds property taxes and insurance to the principal-and-interest payment, which the general loan calculator doesn't, so a plain loan calculator will understate what a mortgage actually costs you monthly.
What's the difference between a loan calculator and an amortization schedule?
A loan calculator gives you the summary: one monthly payment number, one total-interest number. An amortization schedule breaks that same loan into every individual payment, showing exactly how much of payment #47, for example, goes to principal versus interest. Use the calculator to answer "can I afford this," and the schedule when you need the payment-by-payment detail — for taxes, refinancing decisions, or just to see how slowly principal drops in the early years of a mortgage.
Should I pay off debt or save extra toward my mortgage first?
Run both numbers before deciding. The Debt Payoff Calculator shows what a credit card or personal loan is really costing you in interest — often 18-25% APR, which is expensive. The Mortgage Payoff Calculator shows what extra payments save on a mortgage, typically 5-7% APR. Whichever number is higher costs you more per dollar not paid down — as a rule, high-APR debt usually wins the priority, but seeing both real numbers side by side beats guessing.
My debts have different interest rates — how do I know if consolidating actually helps?
That's exactly what the Debt Consolidation Calculator is for: it compares your total interest paying each debt separately against one consolidated loan at a new rate. The honest answer depends entirely on whether the consolidation rate beats the blended average of what you're currently paying — sometimes it saves real money, sometimes it doesn't, and the calculator shows you which before you sign anything.