Global Oil Shock is a free calculator offered in German, English, French, and Spanish that enables households to assess how oil price fluctuations may affect their monthly budgets. By entering information such as country, vehicle, heating system, and usage patterns, users receive tailored cost estimates and over 40 actionable tips to reduce spending across transport, heating, electricity, and everyday shopping. The platform integrates real time Brent oil price data from five independent sources and applies country specific taxes and subsidies for Germany, Austria, Switzerland, the USA, the UK, France, and Spain. It is accessible without registration, requires no email address, and is designed with a strong focus on privacy.