The segmentation of brain tumours plays a significant role in the analysis of medical imaging. For a precise diagnosis of the condition, radiologists employ medical imaging. In order to recognise brain tumours from medical imaging, the radiologist's work must be challenging and complex. There are various distinct steps that may be used to identify brain tumours using magnetic resonance imaging (MRI). In the field of medical imaging, segmentation is the key stage. Segmentation is carried out after classification and image analysis. The appropriate segmentation is crucial since a brain tumour's incorrect detection might have a number of negative effects Method: In this work, the multimodal Brain tumour segmentation challenge was employed (MICCAI BRATS). We removed the brain tumour from the MRI images using the BRATS 2020 dataset, which is openly accessible. In this collection, there are 371 NiFTI-format folders. Convolutional neural networks (CNNs), a kind of deep learning based on an encoder-decoder model, are used in the proposed method to separate the tumours. Results: Accuracy = 0.9759, loss = 0.8240, and IOU = 0.6413 indicate that the proposed model is successful. The proposed model performs better when compared to the state-of-art segmentation models used in this study.