About the Credit Utilization Calculator
Calculate overall and per-card credit utilization — a key credit-score factor — and the balance to stay under 30% or 10%.
Also known as: credit utilization ratio, utilization rate, credit usage.
How to use this calculator
- Enter card balances, card limits.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Utilization = total balances ÷ total limits × 100
Worked example
Using the values pre-filled in the calculator above:
- Card balances: 1200, 300, 0
- Card limits: 5000, 2000, 3000
the calculator returns:
- Overall utilization: 15%
- Total balance: 1,500
- Total limit: 10,000
- Max balance for 30%: 3,000