BlocklyFree fraud & chargeback calculators
Quick, no-signup calculators for Shopify merchants. Your numbers stay in your browser — nothing is sent or stored.
Chargeback Ratio Calculator
Work out your monthly chargeback ratio by count and by value, and see how close you are to card-network monitoring thresholds.
Fraud Cost Calculator
Estimate what fraud chargebacks really cost your Shopify store per month and per year — goods, shipping, fees and staff time.
Shopify Fraud Glossary
Plain-English definitions of AVS, 3-D Secure, card testing, chargebacks, proxies and more.