Calculator Tools
The Hydrogen Analysis Resource Center provides some online calculation tools to assist you.
 Hydrogen Threshold Cost Calculator  uses gasoline price and fuel economy ratio to calculate the cost of hydrogen that would be equivalent to a gallon of gasoline, on a permile basis.
 Energy Equivalency of Fuels  computes the amount of each fuel necessary to provide the same energy as 1 kg of hydrogen, 1 million cubic feet natural gas, 1 barrel of crude oil, or 1 gallon of other fuels, based on lower heating values.

Hydrogen Conversions Calculator  converts between four popular phase points of hydrogen:
 liquid at boiling point (252.87°C at 1 atm).
 gas at Normal Temperature and Pressure (NTP = 20°C at 1 atm).
 gas at standard conditions (15.6°C at 1 atm).
 gas at standard conditions (0°C at 1 atm).
 Hydrogen Heating Values on Mass Basis  calculates energy content of a certain amount of hydrogen based on the mass in kg or lb.
 Lower and Higher Heating Values of Fuels  calculates fuel parameters for hydrogen and various solid, liquid, and gaseous fuels.
 Equation of State Calculator  provides a full equation of state that can be used over the temperature range 13.957 K to 400 K at pressures to 1210 bar; calculates isothermal, isobaric, and isochoric properties for hydrogen in units specified by the user (developed by the National Institute of Standards and Technology).
 Unit Conversion Calculator  contains conversion factors to convert units of weight, volume, distance, etc.
 Financial Calculator  calculates simple financial and/or economic parameters, such as present value of a future amount, future value of a present amount, present value of an annuity, levelized cost, etc,. based on usersupplied assumptions about discount rates and number of years.
If you have comments or questions on calculations or conversion factors, please contact us.