Concrete Mix Calculator - Online Cement Sand Gravel Ratio Tool
Calculate required bags of cement, sand, and gravel for a given concrete volume using standard mix ratios (1:2:4, etc.). Supports metric and imperial.
UD5 Toolkit
Calculate required bags of cement, sand, and gravel for a given concrete volume using standard mix ratios (1:2:4, etc.). Supports metric and imperial.
An animated hourglass that you can set for any time. Watch the sand flow. Beautiful and calming timer.