To pursue the miniaturization of supercapacitors in practical use, it is critical to construct an efficient but limited porosity of a nanocarbon-based electrode for simultaneously obtaining a high utilization of energy storage places and high coating density. However, current studies dominantly focus on the enhancement of specific mass capacitance (C-m) by increasing the pore volume and surface area, leading to a low coating density and, thereby, resulting in a low specific volumetric capacitance (C-v). We report herein the fabrication of a nitrogen-doped mesoporous carbon (NNCM), whose tunable pore volume coupled with the fixed mesopore size offers us the possibility to control the coating density, thus optimizing the C-v and C-m for different application purposes. As a result, NNCM with the highest pore volume and surface area of 2.11 cm(3) g(-1) and 663 m(2) g(-1) demonstrates the highest C-m (190 F g(-1)) but lowest C-v (124 F cm(-3)) because the overhigh porosity reduces the coating density greatly. NNCM with moderate pore volume and surface area of 1.22 cm(3) g(-1) and 489 m(2) g(-1) shows the highest C-v of 200 F cm(-3), although it presents a low C-m of 147 F g(-1). These results may raise concerns about constructing a suitable porosity to realize a target-oriented use, particularly those targeting miniaturized devices.