Soba is called by various names including juwari-soba (or kikouchi-soba) (100% buckwheat flour), kuwari-soba (90% buckwheat and 10% binding agent), hachiwari-soba (or nihachi-soba) (80% buckwheat flour and 20% binding agent), nanawari-soba (70% buckwheat flour and 30% binding agent) and rokuwari-soba (60% buckwheat flour and 40% binding agent) depending on the ratio between buckwheat flour and binding agent such as wheat flour.
蕎麦粉とつなぎとして使用する小麦粉などの配合割合に応じて、十割蕎麦（生粉打ち蕎麦）、九割蕎麦、八割蕎麦（二八蕎麦）、七割蕎麦、六割蕎麦などと名称が変わる。