API Timing Functions VBA

Microsoft Win32 API Timing Functions in VBA7

VBA Function	Description
timestamp()	Returns VBA Time$ as string suffixed with Milliseconds, e.g. 18:45:00.567
kernel_sleep(10000)	Sleeps for specified (10000) Milliseconds while keeping VBA responsive. Option to add your code in wait loop.
get_qpc_seconds()	Returns number of Seconds since last system boot
get_qpc_milliseconds()	Returns number of Milliseconds since last system boot
get_qpc_microseconds()	Returns number of Microseconds since last system boot

Win32 Function References

Query Performance Frequency
Query Performance Counter

QPC functions can be used for time-interval measurements, e.g. before and after your code.