SI base: mass in kg, volume in m³, density in kg/m³.
Common conversions:
1 g = 0.001 kg; 1 L = 0.001 m³; 1 cm³ = 1 mL = 1e-6 m³;
1 ft³ = 0.028316846592 m³; 1 gal (US) = 0.003785411784 m³;
1 g/cm³ = 1000 kg/m³; 1 lb/ft³ ≈ 16.018463 kg/m³.
Validation: volume & density must be > 0 when used as divisors.
Tip: choose what to solve for first; leave that field blank.
Notes & realism
Results show your selected unit plus helpful alternates for quick comparison.
Rounding is trimmed (up to 6 decimals) to keep values readable.
This page performs all math locally in PHP; nothing is uploaded.
Cookies & privacy
Utilities Bunker uses necessary cookies to run the site. Optional cookies help remember preferences,
measure usage, and improve the platform. You can change your choices any time.
Privacy Policy.
