The Finance Algorithm
§ Tool · tier 1 · independent

Credit Utilization Calculator.

Calculate your credit utilization ratio and its impact on your credit score

CalculatorFree, no signupOn-deviceupd May 2026
Inputs
Your numbers
$
$10k
$
$3k
$
$5k
$
$5k
$
$0
$
$0
%
30%

Recommended: under 30% overall, under 10% per card

Math updates live as you change inputs · AI runs on submit

Awaiting inputs

Move the sliders or type in the form on the left — the math updates live as you go. Click Get AI verdict when you want a written analysis.

Credit utilization is the #2 factor in your credit score (after payment history). This calculator shows your current ratio and how to optimize it.

§ Worked examples

Real-world scenarios

Multi-Card Utilization

Card 1: $3,000 of $10,000 limit. Card 2: $4,500 of $5,000 limit. Card 3: $0 of $8,000 limit.

Inputs

card1Limit:10,000card1Balance:3,000card2Limit:5,000card2Balance:4,500card3Limit:8,000card3Balance:0

Overall: $7,500 of $23,000 = 32.6% (Fair). But Card 2 is at 90%! This single maxed card hurts your score. Pay Card 2 down first.

§ FAQ

Questions Australians ask

§ Glossary

Plain-English definitions

Credit Utilization
The percentage of your available credit that you're using.
Statement Closing Date
When your card issuer calculates your statement and reports to credit bureaus.
Credit Limit
The maximum amount you can charge to a credit card.