How Do I Convert Raw Materials into a Finished Product Without a Manufacturing Order?

Use a Bundle product. Allow Bundles and Composite Items System from Inventory & Products Settings, then create the finished product from New Bundle, set the Raw Warehouse, add the raw materials and the quantity of each for one unit, and choose Pack as the Bundle Type. After that, add a quantity of the bundle product to the finished goods warehouse, keeping the Deduct The Components From Stock option selected; the raw materials are deducted from the raw materials warehouse by the produced quantity.