Inputs
Tip: for a slab thickness in mm, set unit to mm and enter thickness as height.
Results
Enter dimensions then click Calculate.
TXTexas IBC / IRC (AHJ amendments)
References & Sources
Standards Cited
- SI Brochure (9th edition) — The International System of Units
Defines the cubic metre (m³) as the SI derived unit of volume View → - ASCE 7-22 — ASCE 7 — Minimum Design Loads and Associated Criteria for Buildings and Other Structures
Source of standard material densities used in weight-from-volume calculations for North American construction - ACI 318-19 — ACI 318 — Building Code Requirements for Structural Concrete
Provides standard concrete densities (normal-weight concrete 150 pcf / 2400 kg/m³) used in volume-to-weight conversions
Formulas Used
- Cuboid Volume:
V = length x width x height
Source: Standard geometry - Cylinder Volume:
V = pi x r² x h
Source: Standard geometry - Sphere Volume:
V = (4/3) x pi x r³
Source: Standard geometry - Cone Volume:
V = (1/3) x pi x r² x h
Source: Standard geometry - Pyramid Volume:
V = (1/3) x base_length x base_width x height
Source: Standard geometry - Excavation Bulking:
Bulked volume = excavated volume x bulking factor
Source: Construction industry practice — Default bulking factor of 1.2 (20%) used for general excavation - Volume from Weight:
V = weight / density
Source: ASCE 7 / ACI 318 - Tank Capacity (litres):
Litres = volume_m³ x 1000
Source: SI unit definitions - Tank Capacity (US gallons):
US gallons = litres / 3.78541
Source: NIST Handbook 44
Key Assumptions
- Reinforced concrete density of 150 pcf (2400 kg/m³) — ACI 318-19
- Normal-weight concrete density of 145 pcf (2300 kg/m³) — ACI 318-19
- Softwood timber density of 500 kg/m³ (31 pcf) — NDS — National Design Specification for Wood Construction
- Default bulking factor of 1.2 (20%) for excavated soil — Construction industry standard practice
- 1 US gallon = 3.78541 litres — NIST Handbook 44