Credit Utilization Calculator
See what share of your available credit you're using, overall and per card.
About the Credit Utilization Calculator
List each card on its own line with its balance and its credit limit. The calculator shows your overall utilisation and each card's, so you can see which balance to pay down first.
Credit utilisation is the second-biggest factor in FICO scores (about 30% of the score, under “amounts owed”). Keeping it under 30%, and ideally under 10%, is generally better. It's measured from the balances reported on your statements.
The formula
Utilisation = total balances ÷ total credit limits × 100
Worked example
Three cards: 1,200 of 5,000; 300 of 3,000; 2,100 of 4,000
- Total balances 3,600; total limits 12,000
- Overall utilisation: 3,600 ÷ 12,000 = 30%
- Card C alone is at 52.5%, the one to pay down first
Questions people ask
Does closing a card help?
It usually raises utilisation by reducing your total limit.
Does it matter if I pay in full?
The statement balance is what's reported, so paying before the statement closes lowers it.
Does a limit increase help?
Yes, if you don't spend more: the same balance becomes a smaller share.