Cemented carbide and cutting tool

A cemented carbide comprising:

• a hard phase;
• a binding phase;
• and inevitable impurities,
• wherein the hard phase includes
• a first hard phase composed mainly of tungsten carbide, and
• a second hard phase composed mainly of a compound, the compound containing multiple types of metallic elements including tungsten and at least one element selected from carbon, nitrogen, oxygen, and boron,
• the second hard phase satisfies
• D10/D90<0.4, wherein D10 denotes a cumulative 10% grain size in an area-based grain size distribution on a surface or cross section of the cemented carbide, and D90 denotes a cumulative 90% grain size in the area-based grain size distribution, and
• σ2<5.0, wherein σ2 denotes a variance of a distance between centroids of nearest two of the second hard phases,
• an average grain size DW of the first hard phase ranges from 0.8 to 4.0 μm and satisfies DM/DW<1.0, wherein DM denotes an average grain size of the second hard phase, and
• an amount of the second hard phase being 2.5% to 15% by mass of the hard phase.