Where is svcutil.exe in Windows 7?

Type in the Microsoft Visual Studio Command Prompt: where svcutil.exe. On my machine it is in: C:\Program Files\Microsoft SDKs\Windows\v6.0A\bin\SvcUtil.exe

With latest version of windows (e.g. Windows 10, other servers), type/search for "Developers Command prompt.." It will pop up the relevant command prompt for the Visual Studio version.

e.g. Developer Command Prompt for VS 2015

More here https://msdn.microsoft.com/en-us/library/ms229859(v=vs.110).aspx

If you are using vs 2010 then you can get it in

C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin\NETFX 4.0 Tools