KVM (Kernel-based Virtual Machine) is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The best Windows alternative is VirtualBox, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to KVM (Kernel-based Virtual Machine) and 13 are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to KVM (Kernel-based Virtual Machine) are QEMU, VMware Workstation Pro, VMware Workstation Player and Windows Sandbox.
KVM is a kernel module that QEMU can use to speed up the emulation