How it works
Circular segment area = r²×acos((r−h)/r) − (r−h)×sqrt(2rh−h²); litres = segment area×length×1,000.
Input definitions
- Internal tank diameter (m)
- Enter the value in the labeled unit.
- Internal cylindrical length (m)
- Enter the value in the labeled unit.
- Liquid depth from bottom (m)
- Enter the value in the labeled unit.
A worked example
- Internal tank diameter (m)
- 2
- Internal cylindrical length (m)
- 3
- Liquid depth from bottom (m)
- 1
Assumptions & limits
Geometric/material planning only. Use consistent labeled units and verify manufacturer instructions and site measurements. Does not determine structural suitability, legal compliance or installation safety.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Should I order exactly the quantity shown?
Treat the result as a planning estimate. Check measurements, units, pack sizes, waste, openings and local requirements; the stated formula does not replace a project-specific design.
How does the Horizontal cylindrical tank fill volume tool work?
Circular segment area = r²×acos((r−h)/r) − (r−h)×sqrt(2rh−h²); litres = segment area×length×1,000.
What are the assumptions and limits of Horizontal cylindrical tank fill volume?
Geometric/material planning only. Use consistent labeled units and verify manufacturer instructions and site measurements. Does not determine structural suitability, legal compliance or installation safety.