Credit Utilization Calculator
Enter each card's limit and balance. You'll get your overall utilization ratio, every card's individual ratio, and the exact dollars it takes to drop under 30% and under 10%.
What it costs to reach each threshold
“Marginal / moderate / large” describes how far the paydown moves you across the bands above. It is not a point estimate — no calculator can predict what your score will do, because the effect depends on the rest of your credit file.
Card by card
| Card | Utilization | To reach 30% | To reach 10% |
|---|---|---|---|
| Chase Sapphire | 40.0% | $800 | $2,400 |
| Capital One | 57.8% | $1,250 | $2,150 |
| Discover | 6.7% | — | — |
Cards without a limit entered are excluded from the overall ratio — there is no denominator to divide by.
How to calculate credit utilization
Utilization is one division problem: what you owe, divided by what you're allowed to borrow.
utilization % = (total balances ÷ total credit limits) × 100
Run it twice. Once across every revolving account you have — that gives you overall utilization, the number people usually mean. Then once per card — that gives you per-card utilization, which the scoring models also look at. A file can hold a respectable 20% overall while one card sits at 95%, and that card is doing damage the overall number hides. The calculator above reports both, and flags the worst card when it's worse than your average.
Only revolving credit belongs in the calculation: credit cards and lines of credit. A car loan or a student loan has a fixed balance that only shrinks — it's evaluated separately and never enters this ratio.
The 30% rule is a signpost, not a cliff
“Keep it under 30%” is the most-repeated number in consumer credit, and it's a fine target. It is not, however, a switch inside the model. Nothing is granted at 29% and revoked at 31%. Scoring models read utilization as a continuous input, which has two practical consequences: dropping from 80% to 45% is real progress even though you're still “over 30,” and getting from 28% to single digits is still worth doing even though you've already “passed.”
That's why the calculator shows both thresholds and the dollars between you and each one, rather than a pass/fail badge. What it deliberately does not show is a predicted point gain. FICO and VantageScore are proprietary, and the effect of any given paydown depends on your payment history, account age, recent inquiries, and where your score already sits. Two people can pay down the identical amount and see very different movement. Any tool that promises you a specific number of points is guessing.
Which card to pay first: the fullest or the most expensive?
These two goals pull in different directions, and it's worth knowing which one you're serving.
If your aim is your credit score— you're applying for a mortgage in ninety days and want the ratio to look right — pay down the card with the highest utilization first. That card is the one dragging your per-card numbers, and clearing it has an effect the aggregate ratio alone won't buy you.
If your aim is money, pay the highest APR first, regardless of how full each card is. That's the debt avalanche, and it's the mathematically cheapest way to retire the balances. A card at 92% of a $1,000 limit and 14% APR is louder on your credit report but far cheaper to carry than a card at 30% of a $20,000 limit at 27% APR.
Most people should take the avalanche and let the utilization improve as a side effect, because interest is a real cost paid every month while a credit score only matters on the days you apply for something. The exception is a known application on the calendar. To see what any given payoff order actually costs you in time and interest, run the balances through the credit card payoff calculator.
Utilization has no memory — which makes it the fastest lever you have
A late payment follows you for seven years. A hard inquiry lingers for two. Utilization is recalculated from whatever balance your issuer reported this month, and the previous month's number is simply gone. Pay a card down and the improvement shows up as soon as the new balance reports — usually within a billing cycle. No other input to your score responds that quickly, which is exactly why it's the lever to pull when you need movement before a mortgage or auto application.
The timing detail people miss: your issuer reports the balance from your statement closing date, not your due date. Pay your card in full every month but do it after the statement closes, and a large balance reports anyway — you pay no interest and still show high utilization. Move the payment to a few days before the closing date and a small balance reports instead. Nothing about your spending changes; only the snapshot does.
The flip side is that high utilization tends to be self-sustaining. Paying the minimum sends most of the payment to interest, so the balance barely moves, so the reported balance stays high month after month — the minimum payment trap costs you a credit score as well as the interest. And because issuers charge interest on the same balance they report, the mechanics of credit card interest and the mechanics of your utilization ratio are driven by the same number.
One legitimate shortcut worth knowing: utilization is a fraction, and you can improve it by raising the denominator instead of lowering the numerator. Requesting a credit limit increase on an existing card drops your ratio the moment it's granted, with no money paid. Ask whether the issuer will do it with a soft pull. It's a genuine improvement to the ratio, though it does nothing about the interest you're paying.
Frequently asked questions
How do I calculate my credit utilization ratio?
Divide what you owe by what you can borrow, then multiply by 100. Add up the balances on all your revolving accounts, add up all their credit limits, and divide the first number by the second: $6,200 owed against $18,500 in limits is 6,200 ÷ 18,500 = 33.5%. Do the same arithmetic on a single card to get that card's own utilization. Both numbers matter, and the calculator above reports both.
What is a good credit utilization ratio?
Under 30% is the number everyone repeats, and it's a reasonable target. But 30% is a rule of thumb rather than a line in the scoring model — nothing special happens at 29.9% that fails to happen at 31%. The ratio is treated as a continuum, so lower is better essentially all the way down. If you want a target that isn't leaving anything on the table, aim for single digits.
Does credit utilization affect my credit score?
Yes, substantially. FICO publishes the weighting of its score categories, and "amounts owed" accounts for 30% of a FICO Score — utilization is the piece of that category you can move fastest. VantageScore describes credit utilization as a highly influential factor. Between them, that covers the scores most lenders pull.
How many points will my score go up if I pay my cards down?
Nobody can tell you, and be skeptical of anyone who claims a number. FICO and VantageScore are proprietary models, and the effect of a utilization change depends on everything else in your file: how long your accounts have been open, whether you have late payments, how many recent inquiries you have, and where your score already sits. Two people making the identical paydown can see very different movement. What is predictable is the direction and the dollar cost — which is what this calculator gives you.
Does paying my card off before the statement closes help?
It's the single most useful timing trick here. Your issuer reports one balance per month, and for most issuers it's the balance on your statement closing date — not your due date, and not your balance the day the credit bureau happens to look. If you pay the card in full every month but do it after the statement closes, a big balance still reports and your utilization still looks high. Pay it down before the closing date and a small balance reports instead. Check your statement for the closing date; it's usually 21 to 25 days before the payment is due.
Should I close a credit card I've paid off?
Usually not, if it has no annual fee. Closing the account removes its limit from the denominator of every utilization calculation you'll ever run. Paying off a $6,000-limit card and closing it takes your $18,500 in total limits down to $12,500 — the same balances now report a much higher ratio, and your score can drop because of a card you just paid off. Leave it open, put a small recurring charge on it so the issuer doesn't close it for inactivity, and pay that off each month.
Do car loans and student loans count toward credit utilization?
No. Utilization is a revolving-credit measure: credit cards, and lines of credit like a HELOC. Installment loans — auto, student, mortgage, personal loans — have a fixed balance that only goes down, and they're evaluated separately. Owing $22,000 on a car doesn't touch your utilization ratio. Only enter cards and lines of credit in the calculator above.
Is zero utilization better than a small balance?
Not necessarily, and it isn't worth engineering. Some scoring models respond very slightly better to a small reported balance than to every card reporting zero, because a zero across the board gives the model nothing recent to evaluate. The difference is small and model-dependent. Anywhere in the single digits is fine — don't carry a balance and pay interest for it, since letting a balance report and paying it in full costs you nothing.
Related debt tools
Credit Card Payoff Calculator
Utilization tells you what to pay down. This tells you how long it takes and what the interest costs.
Debt Avalanche Calculator
With several cards, paying the highest APR first costs the least interest — a different order than utilization implies.
How Credit Card Interest Works
Why the balance that reports to the bureaus is also the balance your issuer charges interest on.
The Minimum Payment Trap
Paying the minimum keeps balances high, which keeps utilization high. Here's the arithmetic.
Educational estimates only, not credit repair or lending advice. This calculator computes ratios from the limits and balances you enter; it does not access your credit report and cannot predict a score change. Credit scores are produced by proprietary models that weigh payment history, account age, credit mix, and recent inquiries alongside utilization. Issuers differ in when they report balances, so the ratio the bureaus see may lag what you enter here by up to a billing cycle.