Credit Utilization Calculator
Credit utilization — the percentage of your available credit that you're currently using — is the second-biggest factor in your credit score, behind only your payment history, and it's one of the fastest factors to improve. It measures both your overall utilization across all cards combined and your per-card utilization on each individual account. Keeping your overall utilization under 30% protects your score, and under 10% is ideal for the best results. This calculator lets you enter the credit limit and current balance for each card you carry, then shows your overall utilization, your per-card utilization, and a rating of your utilization as excellent, good, fair, or poor. Because utilization is recalculated whenever balances are reported, paying down balances can lift your score within weeks, unlike other score factors that take much longer to move. Per-card utilization matters too: maxing out a single card, even when overall utilization is low, can still hurt your score, so keep each card's utilization low as well. A few strategic moves help: keep unused cards open to preserve your total available credit and lower utilization, pay balances before the statement closing date so the low balance is what's reported to the bureaus, and request credit limit increases (which some lenders grant without a hard inquiry) to raise your available credit and lower utilization without changing your balances. Avoid closing old cards, because doing so reduces your total available credit and can raise your utilization ratio even if you haven't changed your spending. Use this calculator to track a key credit-score factor over time and to plan balance paydowns before applying for a mortgage or other credit where every point on your score matters.
Credit Utilization Calculator
Calculate your credit utilization ratio — the second-biggest factor in your credit score.
Card 1
Card 2
Overall utilization
30%
Rating: Good
Card 1 utilization
30%
Card 2 utilization
30%
Total available credit
$15,000
Using $4,500
Keep overall utilization under 30% (ideally under 10%) for the best credit score impact. Paying down balances — not opening new cards — is the fastest way to improve this ratio.
How to Use This Calculator
- 1Enter the credit limit and current balance for each card.
- 2Add as many cards as you carry.
- 3Read your overall and per-card utilization.
- 4See your utilization rating.
Why It Helps
- ✓Tracks a key credit-score factor.
- ✓Shows both overall and per-card utilization.
- ✓Guides you to keep utilization under 30%.
- ✓Helps you plan balance paydowns.
About This Calculator
Credit utilization — the percentage of your available credit that you're currently using — is the second-biggest factor in your credit score, behind only your payment history, and it's one of the fastest factors to improve. It measures both your overall utilization across all cards combined and your per-card utilization on each individual account. Keeping your overall utilization under 30% protects your score, and under 10% is ideal for the best results. This calculator lets you enter the credit limit and current balance for each card you carry, then shows your overall utilization, your per-card utilization, and a rating of your utilization as excellent, good, fair, or poor. Because utilization is recalculated whenever balances are reported, paying down balances can lift your score within weeks, unlike other score factors that take much longer to move. Per-card utilization matters too: maxing out a single card, even when overall utilization is low, can still hurt your score, so keep each card's utilization low as well. A few strategic moves help: keep unused cards open to preserve your total available credit and lower utilization, pay balances before the statement closing date so the low balance is what's reported to the bureaus, and request credit limit increases (which some lenders grant without a hard inquiry) to raise your available credit and lower utilization without changing your balances. Avoid closing old cards, because doing so reduces your total available credit and can raise your utilization ratio even if you haven't changed your spending. Use this calculator to track a key credit-score factor over time and to plan balance paydowns before applying for a mortgage or other credit where every point on your score matters.
Disclaimer: This calculator provides estimates for educational purposes only and does not constitute financial, tax, or investment advice. Results depend on assumptions that may not reflect your actual situation.
Frequently Asked Questions
What is a good credit utilization ratio?
Under 30% is good; under 10% is excellent. Lower is better for your credit score.
Does per-card utilization matter?
Yes. Maxing out one card even if overall utilization is low can still hurt your score. Keep each card's utilization low too.
Should I close unused credit cards?
Closing cards reduces your total available credit, which can raise your utilization. Keep unused cards open unless they charge annual fees.
When is utilization reported to bureaus?
Typically at statement closing. Pay balances before the statement closes to show low utilization, even if you pay in full.
Does requesting a credit limit increase help?
It can lower your utilization by raising available credit, provided you don't increase your balances. Some lenders do a hard inquiry.
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Written by
James MitchellSenior Financial Analyst & Personal Finance Expert
Certified Financial Planner (CFP) • MBA in Finance, University of Chicago Booth School of Business