Ammonia refrigeration calculators
Free engineering tools built for ammonia refrigeration professionals. Reference data, unit conversions, and thermodynamic calculations — all in one place.
NH3 Pressure-Temperature Chart
Interactive saturation curve for anhydrous ammonia (R-717). Hover tooltips, unit toggling between °F/psig and °C/kPa, searchable data table, superheat/subcooling calculator, and key reference points.
- Interactive saturation curve with hover data
- Toggle °F/psig ↔ °C/kPa
- Superheat & subcooling calculator
- Searchable saturation data table
- Critical & boiling point markers
BTU to Ton of Refrigeration
Full unit conversion between BTU/hr, MBH, MMBTU/hr, tons of refrigeration, kW, and kcal/hr. Auto-calculates as you type. Includes common refrigeration load reference tables and cold storage sizing helpers.
- 6-way simultaneous unit conversion
- Auto-calculates as you type
- Common refrigeration load reference table
- Cold storage quick-sizing helpers
- Educational explanation of a ton of refrigeration
All thermodynamic data sourced from ASHRAE Fundamentals (2017) and NIST Webbook. Calculators are provided for reference purposes — verify critical calculations with a qualified professional engineer.