unit， and series to get the exact raw-to-UMS mapping. Is my data stored? No. All calculations happen in your browser; nothing is sent to a server. ， the calculator proportionally maps it to the corresponding UMS interval. For example， What is the UMS Calculator Edexcel used for? The UMS Calculator Edexcel converts your raw exam mark into a Uniform Mark Scale (UMS) score by applying linear interpolation between grade boundaries. It helps Edexcel and Pearson students estimate their UMS mark before official results are released. How does the UMS Calculator Edexcel calculate my score? The UMS Calculator Edexcel uses linear interpolation. If your raw mark falls between two grade boundary points， if the A boundary is raw 58 → UMS 80 and B is raw 48 → UMS 70， a raw mark of 53 would estimate to approximately UMS 75. Where can I find the official Edexcel grade boundaries? Official grade boundaries are published by Pearson on their qualifications website after each exam series. Search for your specific qualification，。

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