The purpose of this study was to obtain briquettes with calorific value, compressive strength and combustion rate from briquettes made from a mixture of water hyacinth charcoal and coconut shell with starch adhesives. The making of briquettes using a mixture of water hyacinth and coconut shell charcoal is carried out by the pyrolysis process using a furnace, printing, and pressing briquettes using a briquette printer in the form of a box of a certain size. Determination of the quality of briquettes was carried out based on the proximate analysis method, namely by determining the water content, ash content, evaporating content, compressive strength test, and determination of calorific value. Briquette making mixes water hyacinth and coconut shell charcoal. In various variations, the comparison between the production of water hyacinth and coconut shell briquettes is made with variations of 1:1, 2:1, and 3:1. Proximate analysis data shows that the water content of a mixture of water hyacinth and coconut shell briquettes is 3.60-7.36%, ash content 5.05-7.28%, volatile substances 50.77-66.35%, compressive strength of briquettes 0.89-5.97 MPa and combustion heating value 4,922-6,237%.