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Frequently Asked Questions

Which credit card should I use for groceries?

The best card for groceries depends on what cards you have. Cards like the Amex Blue Cash Preferred offer 6% cash back at US supermarkets, while the Amex Gold Card earns 4x points. Add your cards to our calculator to see which one maximizes your rewards.

How do I know which credit card earns the most rewards?

Different cards have different bonus categories. Our calculator compares your cards' rewards rates for each spending category and shows you which card earns the most points, miles, or cash back for that specific purchase.

Should I use different cards for different purchases?

Yes! Using the right card for each purchase category can significantly increase your rewards. For example, you might use one card for dining (3-4x points), another for travel (5x points), and a flat-rate card for everything else (2% cash back).

What categories does the Which Card calculator support?

Our calculator supports six main spending categories: Groceries, Dining, Travel, Gas, Online Shopping, and Everything Else. These cover the vast majority of everyday spending.

Do I need to create an account to use this calculator?

No account required! You can add your cards and use the calculator immediately. If you want to save your cards across devices, you can optionally sign in with Google.

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