Updated · Built and checked by the PlinzoTools team, formulas tested against published sources
Calculate your credit utilization ratio, a major factor in your credit score.
15.0%
Credit utilization -- the share of your available credit you're currently using -- is one of the most influential factors in most credit scoring models, second only to payment history. This is a completely different calculation from any payoff or interest math: it's a simple ratio, but one with outsized importance for your credit health.
Enter your total balances across all revolving credit accounts (credit cards) and your total credit limits across those same accounts.
Utilization = (Total Balances ÷ Total Credit Limits) × 100
Under 10% is commonly considered excellent, under 30% good, under 50% fair, and 50%+ is generally considered poor for credit scoring purposes -- though exact scoring model thresholds vary. Lower is generally better, and keeping utilization low (not just paying on time) meaningfully helps your score.
Imagine hypothetical balances of $3,000 across cards with total limits of $12,000. That is 25% utilization, which sits in the "good" band from the rating guide. If you pay the balances down to $1,200, the ratio falls to 10%. If instead you keep the $3,000 balance but a card issuer raises your total limit to $15,000, utilization drops to 20% without you paying anything. The reverse also happens: if an issuer lowers a limit or you close a card, the same balance produces a higher percentage.
Because many issuers report the statement balance, paying your card down a few days before the statement closes can result in a lower reported balance even if you pay the full amount by the due date every month. If you want to lift your score before a loan application, this timing tactic is often more effective than paying after the statement arrives. Scoring models differ in how they weigh recent changes, so results vary.
This tool shows a ratio, not your credit score, which depends on many factors. For an actual credit report, use the free reports available through the official annual credit report service and dispute any errors you find.
Often the opposite -- closing a card reduces your total available credit limit, which can raise your overall utilization ratio even if your balances don't change. Keeping old, no-fee cards open (even unused) commonly helps utilization.
Both can matter to different scoring models -- overall utilization across all accounts is the most commonly cited factor, but very high utilization on even a single card can also affect scoring.
Not necessarily. If the statement closes before you pay, the issuer may report the balance from that statement, so a nonzero utilization can appear even when you pay in full.
It can lower utilization if you do not spend more, but some issuers use a hard inquiry for the request. Ask your issuer whether it will use a soft or hard check first.
No. Debit cards draw on your own money and have no credit limit, so they are not part of utilization.
Utilization has no long memory in most models, so a lower reported ratio can help within a cycle or two once issuers report it, but the exact effect varies by scoring model.
Reference: Consumer Financial Protection Bureau