Daily and Monthly Credit-Card Interest Calculator
Interest is a purchase with no object attached. Estimate the daily and billing-cycle charge, then see how much work goes only to carrying the balance.
- ✓ Estimates daily interest from balance and APR
- ✓ Calculates a monthly billing-cycle charge
- ✓ Converts the carrying cost into work hours
$123
6.2 hours of take-home work for interest alone.
- Interest per day
- $4.11
- Interest over this cycle
- $123
- Simple annual estimate
- $1,499
- APR entered
- 24.99%
The price tag is only the beginning.
A $6,000 balance at 24.99% APR produces about $4.11 in interest per day, or roughly $123 over a 30-day billing cycle if the balance stays unchanged.
Calculate your number →We make the hidden time cost of money visible.
A price can tell you what leaves your account. It cannot tell you how long you worked to earn it, what the recurring cost becomes over a year, or whether today’s purchase takes money already promised to next week.
Worth the Hours? gives you the result immediately. No registration, no subscription, and no bank login.
Before you decide.
How is daily credit-card interest estimated?
The calculator divides APR by 365 and multiplies that daily rate by the balance. It then multiplies the daily charge by the billing-cycle days you enter.
Will this match my statement exactly?
Not necessarily. Issuers usually use an average daily balance, and purchases, payments, fees, compounding, and the precise cycle length can change the actual charge.
Can this predict my payoff date?
No. That requires your payment amount, timing, future charges, fees, and cardholder agreement.