Free credit utilization calculator. Check your per-card and overall utilization ratio, see how it affects your credit score, and find the optimal balance targets.
Credit utilization — the ratio of your credit card balances to your credit limits — accounts for 30% of your FICO score. It's the second most important factor after payment history, and unlike payment history, it can be improved almost instantly.
The general guidance: keep overall utilization below 30%, ideally under 10%. But it's not just about overall utilization — per-card utilization matters too. Having one card at 80% and another at 0% is worse than having both at 20%, even if the overall ratio is the same.
This calculator lets you enter all your credit cards, see per-card and overall utilization, and find the optimal balance distribution to maximize your score. Credit utilization is the ratio of your outstanding balances to your total credit limits, and it accounts for roughly 30% of your FICO score. Keeping individual card utilization below 30% and overall utilization below 10% produces the strongest score impact.
Utilization is the fastest lever you can pull to improve your credit score. Paying down a balance is reflected on your next statement, and the score impact is immediate. This calculator shows exactly where you stand and what to target. Monitoring utilization weekly rather than monthly catches balance spikes before they hit your credit report.
Per-Card Utilization = Card Balance / Card Limit × 100 Overall Utilization = Total Balances / Total Limits × 100 Target Balance (10%) = Card Limit × 0.10 Amount to Pay Down = Current Balance − Target Balance
Result: Card 1: 70% (danger) | Card 2: 5% (excellent) | Overall: 26.7% (fair)
Card 1 has $3,500 on a $5,000 limit = 70% utilization (very high). Card 2 has $500 on $10,000 = 5% (excellent). Overall: $4,000/$15,000 = 26.7%. While overall is under 30%, Card 1's high per-card utilization is dragging your score down. Paying Card 1 down to $500 (10%) would significantly boost your score.
FICO data shows the highest-scoring consumers use about 7% of their available credit. The score impact is roughly: 0% = very good, 1-9% = optimal, 10-29% = good, 30%+ starts declining. The curve is steep — going from 50% to 10% utilization can improve your score by 40-80 points.
Most card issuers report your balance to credit bureaus on the statement closing date, not the payment due date. If you pay your balance before the statement closes, a lower balance (or $0) is reported. This lets you use your cards heavily for rewards while maintaining low reported utilization.
Before applying for a mortgage or other major loan, optimize your utilization 2-3 months ahead. Pay all cards below 10%, ideally leaving one card at 1-5% and the rest at $0. This gives the maximum FICO boost in the shortest time.
0-9% is excellent and maximizes your score. 10-29% is good with minimal impact. 30-49% starts to hurt your score noticeably. 50-74% is considered high and significantly negative. 75%+ is very high and severely impacts your score. The target is under 10% overall and per-card.
Both matter. FICO considers per-card utilization AND overall utilization separately. Having one card at 90% utilization hurts your score even if overall utilization is low. Try to keep each individual card below 30%, ideally below 10%.
There's a myth that carrying a balance helps your score. It doesn't — you're just paying interest for nothing. However, having a small reported balance (1-5%) is slightly better than 0% on some models. The solution: use the card, then pay in full after the statement closes so a small balance reports.
Utilization has no memory — only the current month's reported balance matters. If you pay down a card before the statement closes, the lower balance reports and your score improves within 1-2 weeks. This is the fastest way to improve a credit score.
Generally no. Open, unused cards with $0 balance lower your overall utilization by adding to your available credit. A $0-balance card with a $10K limit reduces your utilization on all other cards. The only reasons to close: annual fee you can't justify, or temptation to overspend.
It may cause a hard inquiry (5-10 point temporary drop), but the resulting higher limit lowers utilization, which often more than offsets the inquiry impact. Some issuers do soft-pull limit increases (no score impact). Ask your issuer which they use.