Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Overall utilization
35.2
Highest card utilization
86.0
Paydown to hit target overall
$1,100
Paydown on that one card
$2,800
Spending headroom under target
$0
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How to use this
- 1Enter total revolving balances ($).
- 2Enter total credit limits ($).
- 3Enter highest single card balance ($).
- 4Enter that card's limit ($).
- 5Enter target utilization (%).
- 6Read your overall utilization on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
Revolving utilization is one of the largest movable factors in common credit scoring models, and it is measured two ways: overall across all your cards and individually on each one. A single maxed card can weigh on a score even when the overall ratio looks fine, which is why paying the right card matters more than paying the biggest. This calculator reports overall utilization, the utilization of the card you flag as highest, and exactly how much you would need to pay down to reach a target ratio. Because issuers report the statement balance rather than the balance after your payment, it also shows the amount to clear before the statement date if you want a lower number reported.
Worked example
Using the values the calculator loads with:
Inputs
- Total revolving balances: 7400 $
- Total credit limits: 21000 $
- Highest single card balance: 4300 $
- That card's limit: 5000 $
- Target utilization: 30 %
Results
- Overall utilization: 35.2
- Highest card utilization: 86
- Paydown to hit target overall: $1,100
- Paydown on that one card: $2,800
- Spending headroom under target: $0
What each field means
Inputs
- Total revolving balances ($)
- The total revolving balances used in the calculation, measured in $. Starts at 7400 $ so you have a working example on load. Accepted range: 0–500000 $.
- Total credit limits ($)
- The total credit limits used in the calculation, measured in $. Starts at 21000 $ so you have a working example on load. Accepted range: 1–1000000 $.
- Highest single card balance ($)
- The highest single card balance used in the calculation, measured in $. Starts at 4300 $ so you have a working example on load. Accepted range: 0–200000 $.
- That card's limit ($)
- The that card's limit used in the calculation, measured in $. Starts at 5000 $ so you have a working example on load. Accepted range: 1–200000 $.
- Target utilization (%)
- The target utilization used in the calculation, measured in %. Starts at 30 % so you have a working example on load. Accepted range: 1–100 %.
Results
- Overall utilization
- Returned as a whole number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Highest card utilization
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Paydown to hit target overall
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Paydown on that one card
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Spending headroom under target
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Is 30% a real threshold?
It is a common rule of thumb, not a cliff. Modern models generally reward lower ratios continuously, with the best profiles often in low single digits.
When is my balance reported?
Usually on the statement closing date, not the due date. Paying before the statement closes is what lowers the reported figure.
Does a higher limit help?
Mechanically yes, it lowers the ratio. A limit-increase request may trigger an inquiry with some issuers.
Do charge cards count?
Treatment varies by model and issuer reporting. Cards with no preset limit are often excluded from the ratio.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Credit Utilization Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/credit-utilization-calculator
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/credit-utilization-calculator" target="_blank" rel="noopener">Credit Utilization Calculator — RevenueLab</a> (2026).</p>
Source: [Credit Utilization Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/credit-utilization-calculator) (2026).