Cash Back Calculator

Calculate how much cash back you earn on a purchase and your effective net spend after the rebate. Free, instant, no signup.

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Formula: Cash back = Spend × Rate% | Effective spend = Spend − Cash back

How to use the Cash Back Calculator

  1. Enter your values. Fill in the fields with your numbers.
  2. Calculate. Press Calculate to run the cash back calculator.
  3. Use the result. Copy the result or try a related tool next.

Why use our Cash Back Calculator

Instant results. Enter your figures and the cash back calculator returns an answer in seconds.
Free & private. Runs in your browser — no signup, and nothing is sent to a server.
Accurate. Uses standard formulas so you can rely on the numbers.

Free to use — premium coming soon

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About the Cash Back Calculator

The Cash Back Calculator turns a credit card's reward rate into a real dollar figure so you can see exactly what a purchase or a month of spending earns you. You enter the amount you spent and the cash back percentage your card advertises, and it returns the reward you'll receive, usually credited as a statement credit, direct deposit, or gift card. It works for a single item, a category total, or your projected annual spending. Because the math is identical whether the figure is a sneaker purchase or a quarter of grocery bills, the tool is just as handy for comparing two cards as it is for double-checking a posted reward.

Reach for this calculator whenever a card quotes a rate and you want the number behind it. It is most useful when you are choosing between a flat-rate card and a tiered or rotating-category card, deciding whether an annual fee is worth paying off through rewards, or confirming that the cash back on your statement matches what was promised. Shoppers also use it before a large purchase, like an appliance or flight, to see whether putting it on a 3% card instead of a 1% card is worth the effort. Running a few quick scenarios takes seconds and prevents over-estimating what a rewards card actually pays.

Under the hood the formula is deliberately simple: cash back equals the purchase amount multiplied by the rate expressed as a decimal. A $75 purchase at 1.5% returns $75 times 0.015, or about $1.13; the same purchase at 3% returns $2.25. To work the other direction and find the rate you actually received, divide the reward by the amount spent and multiply by 100, so $30 earned on $1,000 spent is 3%. The calculator handles the decimal conversion for you, which is where manual math most often slips. For tiered cards, calculate each category separately, since a card may pay 5% on one type of spending and 1% on everything else.

Every calculation runs entirely in your browser, so the amounts and rates you type are never sent to a server, stored, or shared. The results are a precise reflection of the inputs you provide, but real-world earnings can differ for reasons the tool cannot see: many cards cap bonus rates after a spending threshold (often $1,500 per quarter on rotating cards, equal to about $75 back), some round rewards down, and a few exclude certain transactions. Treat the figure as an accurate reward estimate based on the advertised rate, and always confirm caps, exclusions, and current bonus categories in your card's terms before relying on it.

Frequently asked questions

How is cash back calculated?

Multiply your purchase amount by the cash back rate written as a decimal. For example, 2% on a $500 purchase is $500 x 0.02 = $10. The calculator converts the percentage to a decimal for you so you don't have to.

How do I find out what cash back percentage I actually earned?

Divide the reward you received by the amount you spent, then multiply by 100. If you got $30 back on $1,000 of spending, that's (30 / 1000) x 100 = 3%. This is useful for checking whether a card paid the rate it advertised.

Does the calculator account for spending caps or bonus category limits?

No. It applies the rate you enter to the full amount. Many rotating-category cards pay the bonus rate only up to a quarterly cap, such as $1,500 in spending, then drop to 1%. To model this, calculate the capped portion and the remainder separately.

How do I calculate cash back on a card with tiered or category rates?

Run a separate calculation for each category and add the results. If a card pays 5% on groceries and 1% on everything else, compute the 5% on your grocery total and the 1% on the rest, then total the two rewards.

Is cash back the same as a discount on my purchase?

Not exactly. Cash back is paid after the fact as a statement credit, deposit, or gift card, so you still pay the full price up front. It also only delivers real value if you pay your balance in full, since interest charges can quickly exceed any rewards earned.

From our blog

Hourly to Salary: How to Compare Job Offers Without Getting Fooled by the Numbers

By the Super Simple Digital Tools Team · Updated June 2026

When two job offers are quoted in different units, your gut is a terrible judge. A recruiter says $26 an hour; another company offers $52,000 a year. Most people assume the salary wins, but $26 × 2,080 is $54,080, so the hourly role is actually ahead before you factor in anything else. Converting both to the same yearly figure is the only honest way to compare, and it takes seconds once you know the formula behind it.

That formula is hourly rate multiplied by hours per week multiplied by weeks per year. The reason a single number like 2,080 gets quoted so often is that 40 hours across 52 weeks is the default full-time year in the United States. But the moment your situation differs from that default, the default answer is wrong. A four-day-week role at 32 hours, a seasonal contract that runs 40 weeks, or a job with three weeks of unpaid shutdown each year all need their own inputs, which is exactly why a calculator with editable fields beats memorizing a multiplier.

The biggest trap in any hourly-to-salary comparison is treating gross pay as if it were money in your pocket. Two roles with identical annual figures can leave you with very different take-home amounts once health insurance premiums, retirement matching, and state tax differences are layered on. The conversion tells you the headline number; benefits, paid time off, and tax withholding decide what actually lands in your account. Always finish the comparison by mentally subtracting deductions, not just reading the top line.

Overtime is the other variable that quietly distorts things. Under the Fair Labor Standards Act, non-exempt hourly employees earn at least one and a half times their regular rate for hours past 40 in a week. If an hourly job routinely involves overtime, its real annual earnings can sit well above the flat 2,080-hour estimate, while a salaried role usually pays the same no matter how many extra hours you put in. When overtime is common, the hourly job's true value is higher than a plain conversion suggests, so weigh that before deciding a salary is the better deal.

Once you have a clean annual figure, push it down into a monthly number by dividing by twelve, because that is the scale you actually live on. Rent, car payments, and subscriptions are monthly, so a $54,080 salary becomes roughly $4,507 a month gross, and then noticeably less after tax. Running the conversion in both directions, hourly up to annual and annual back down to monthly, gives you a budget you can sanity-check against real bills rather than an abstract yearly headline.

  • Set the weeks field to match your paid weeks, not the calendar: use 50 if you take two weeks of unpaid leave so the annual figure stays realistic.
  • For a fast mental estimate of a full-time annual salary, double your hourly rate and add three zeros ($25/hour roughly equals $50,000).
  • If your role regularly includes paid overtime, add it separately at 1.5× your rate rather than trusting the flat conversion, which assumes none.
  • After getting the gross annual number, divide by 12 for a monthly figure and shave off 20 to 30 percent as a rough buffer for taxes and deductions before budgeting.

Read the full guide →

Tool by the Super Simple Digital Tools Team. Reviewed by our editorial team. Free to use, no signup required.

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