Ice mélange is a mixture of icebergs and sea ice which floats in front of Greenland’s largest glaciers. The presence of ice mélange can have a significant impact on a glacier and its fjord, but the melting of an ice mélange by the ocean is currently poorly understood. Here, we use computer simulations to develop an equation which describes how ice mélange melts under different environmental conditions. This work improves our understanding of the effect of ice mélange on glaciers and the ocean.