Unit conversions

This module provides convenience conversions often used in survey workflows. The conversions are intended as practical calculator functions.

Density conversions

• 15C vacuum 9 15C air: converts absolute density to apparent density.
• 15C air 9 15C vacuum: reverse conversion.
• Relative density @15C: based on a reference density of water.
• API  relative density @60/60F: API gravity to relative density.

Volume/weight conversions

• m @15C  Long tons (in air): converts a standard volume to weight using apparent density.
• m @15C  bbl @60F: uses CTL/VCF internally (high-level behaviour only).

Notes

• If a conversion depends on CTL/VCF, treat the result as a calculation aid.
• Always confirm your units (kg/m vs kg/L, C vs F, m vs bbl).