Finance & Investment
Debt-to-Income Ratio Calculator
Debt-to-Income Ratio Calculator is a browser-based calculator tool on CalcToolsBase. Calculate your debt-to-income (DTI) ratio and see how lenders read it. To use it, enter your values and view the result directly in your browser — no signup and nothing to install.
Debt-to-Income Ratio Calculator takes your total monthly debt payments and gross monthly income and gives back the DTI percentage, applying monthly debt payments ÷ gross income. It's a quick, browser-based way to work out your debt-to-income ratio.
About this calculator
Debt-to-Income Ratio Calculator is built to work out your debt-to-income ratio without a server round-trip. Provide your total monthly debt payments and gross monthly income and it uses monthly debt payments ÷ gross income to produce the DTI percentage, instantly and entirely in your browser, which makes it handy for quick checks and repeat runs.
Lenders use DTI to judge how much of your income is already committed to debt. A lower ratio generally improves your chances of approval and your rate.
How to use
- Enter your total monthly debt payments.
- Enter your gross monthly income (pre-tax).
- Press Calculate to see your DTI percentage and band.
- Compare the result against typical lender limits.
Why use Debt-to-Income Ratio Calculator
Fast
Calculations run in your browser. No round trip to a server.
Private
Your inputs never leave your device. Nothing is uploaded.
Free
No signup, no paywall, no ads-in-results, no watermarks.
Educational
Uses simplified financial formulas for educational estimates. Results may not include fees, taxes, insurance, lender rules, penalties, or credit decisions.
Mobile-ready
Optimised for phones, tablets, and desktops alike.
Transparent
Clear about the method used and its limits, with disclaimers where they matter.
Common uses
Debt-to-Income Ratio when tracking your debt load
Debt-to-Income Ratio for loan-approval odds
Debt-to-Income Ratio when checking mortgage or loan readiness
Debt-to-Income Ratio for a borrowing-readiness check
Debt-to-Income Ratio when comparing DTI to lender limits
Debt-to-Income Ratio for a lender affordability review
Technical notes
Debt-to-Income Ratio Calculator computes the debt-to-income ratio = total monthly debt payments ÷ gross monthly income × 100.
Uses the monthly debt payments and gross income you enter; lenders may count items differently.
Nothing you type is uploaded — the calculation happens entirely on your device.
FAQ
How is DTI calculated?
Divide your total monthly debt payments by your gross monthly income and multiply by 100. For example, 1,500 of debt on 5,000 income is a 30% DTI.
What DTI do lenders prefer?
Many lenders favour a DTI under 36%, with the housing portion below about 28%. Higher ratios can make approval harder or raise the rate.
Should I use gross or net income?
Lenders typically use gross (pre-tax) income for DTI, so enter your gross monthly income for a comparable figure.
Does the Debt-to-Income Ratio Calculator send my data to a server?
No. The Debt-to-Income Ratio Calculator runs entirely in your browser — your inputs never leave your device, and nothing is uploaded or stored.
Worked example
With 25,000 in monthly debt payments and 80,000 income: DTI = 25,000 ÷ 80,000 × 100 = 31.25%.