Why is 30% commonly mentioned?

It’s a widely cited rule of thumb that many credit scoring models weigh utilization below 30% more favorably — this tool reports the factual ratio only, not a score or advice on how to change it.

Credit Utilization Calculator

Credit

Calculate your credit utilization ratio — the percentage of available credit currently in use.

Display currency

Changing the display currency only changes the symbol shown — amounts aren't converted, since this tool doesn't use live exchange rates.

Total credit card balance(s)

Total credit limit(s)

Credit utilization

How this is calculated

Credit Utilization = (Total Balances ÷ Total Credit Limits) × 100.

Frequently asked questions

Why is 30% commonly mentioned?: It’s a widely cited rule of thumb that many credit scoring models weigh utilization below 30% more favorably — this tool reports the factual ratio only, not a score or advice on how to change it.

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