Contact Us

Questions about a result, a stone or a figure in a guide go to admin@gravelcalculatr.com.

Helpful details to send

• Which guide you were reading, or the measurements, depth and stone you typed into the calculator.
• The result the tool or guide gave, and what you think it should be.
• Anything that backs your figure up: a scale ticket from the quarry, the label on a bag or a building code section.

After you write

Each reported figure is compared with the document it came from. A corrected guide shows a new "Updated" date at the top.