✨Free to use — no credit card required
Use the right card.
Every time.
WhichCard tells you exactly which credit card to use for every purchase — online and in-store — based on the cards you actually hold.
Sign in with GoogleHow it works
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Add your cards
Select the credit cards you own from our database of 40+ popular US cards.
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We map the rewards
Our engine knows every card's bonus categories, rotating rewards, and spending caps.
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Get instant answers
Install our Chrome extension and see your best card on every site you shop — automatically.