Credit Utilization Calculator

The Credit Utilization Calculator shows how much of your available credit you are using — both on each individual card and across all of your cards combined. Credit utilization is one of the most important factors in your credit score, and this tool goes a step further than a simple ratio: it reports your highest single-card utilization and tells you the exact amount to pay down to reach the 30% "good" and 10% "excellent" thresholds.

What is Credit Utilization?

Credit utilization (also called your credit utilization ratio or CUR) is the percentage of your available revolving credit that you are currently using. It is calculated from your card balances and credit limits. Because it makes up a large share of most credit-scoring models — roughly 30% of a FICO score — it is second only to payment history in importance, and unlike payment history it can be changed almost immediately by paying down a balance.

Credit Utilization Formula

There are two utilization numbers that matter. The first is for a single card; the second combines every card you hold.

Notice that overall utilization sums all balances and all limits before dividing — it does not average the individual card percentages. A small balance on a high-limit card barely moves your overall number, while a near-maxed card with a low limit can dominate it.

To Reach a Target, Pay Down to This Balance

To hit a target utilization on any card, keep its balance at or below the target percentage of its limit. Rearranging the formula gives the payoff amount:

For example, on a card with a $10,000 limit, a 30% target means keeping the balance at or below $3,000, and a 10% target means $1,000 or less. This calculator runs that math for every card and for your wallet as a whole.

What is a Good Credit Utilization Ratio?

Lower is generally better, but zero is not required — keeping a small reported balance shows active, responsible use of credit. The widely used guidance is simply to stay under 30%, and ideally under 10%, on both your overall ratio and any single card.

Why Both Per-Card and Overall Utilization Matter

Credit-scoring models look at your overall utilization across all cards and at the utilization of your highest individual card. This is why a single maxed-out card can hurt your score even when your combined ratio looks healthy. Spreading a balance across cards, or paying down the most heavily used card first, can improve the per-card number that some models weigh heavily. This calculator highlights your highest card so you know exactly where to focus.

What Affects Your Credit Utilization?

How to Use This Calculator

1. Choose your currency: Select the currency that matches your statements.
2. Add each card: Enter the current balance and credit limit for every card. Use the "Add another card" button for as many cards as you need.
3. Click Calculate: The tool computes utilization for each card and for all cards combined.
4. Review your payoff plan: See your overall utilization on the gauge, your highest single-card utilization, and the exact amount to pay down to reach the 30% and 10% thresholds.

Frequently Asked Questions

What is credit utilization?

Credit utilization is the percentage of your available revolving credit that you are currently using. It is your total balances divided by your total credit limits, multiplied by 100. It is one of the biggest factors in most credit scores.

How is credit utilization calculated?

For a single card, utilization equals the balance divided by the credit limit, times 100. For overall utilization, add up every card balance and every card limit, then divide the total balance by the total limit and multiply by 100. Scoring models do not average the individual card percentages.

What is a good credit utilization ratio?

Keeping overall utilization under 30% is the widely cited rule of thumb, and under 10% is considered excellent. Lower is generally better, but a small positive balance can still help by showing active, responsible use of credit.

Does overall or per-card utilization matter more?

Both matter. Scoring models look at your overall utilization across all cards and also at your highest individual card utilization. A single maxed-out card can hurt your score even when your overall ratio looks healthy, which is why this calculator reports both numbers.

How much should I pay to lower my utilization?

To reach a target utilization, pay your balance down to the target percentage of your limit. For 30% on a card with a 10,000 limit, keep the balance at or below 3,000; for 10%, keep it at or below 1,000. This calculator works out the exact payoff for each card and for your wallet as a whole.

How fast does paying down a card improve my score?

Utilization has no memory, so it updates as soon as your lower balance is reported to the credit bureaus, usually within one statement cycle. Paying down a high balance is one of the fastest ways to improve a credit score.

Additional Resources

• Credit Score - Wikipedia
• Credit Card - Wikipedia