Acceptable units
Updated 13 Oct 2023
See below for format rules when you need to enter a unit for numeric value with unit answers.
You do NOT lose an answer attempt if you submit an answer with an unrecognized unit. You may receive feedback about how to enter the unit format correctly.
IMPORTANT: Rules for entering units
 Use only unit abbreviations. Do NOT add a period after any unit.
 Units are casesensitive.
 Mastering can accept as correct a unit answer that is equivalent to the correct answer. For example, if the correct answer is 2 V and you enter 2000 mV, you will receive full credit. See next point for an exception to this rule.
 Both SI (International System of Units) and U.S. Customary units are represented on the list of units that Mastering recognizes, so you can gain credit by answering correctly using either an SI unit or a US Customary unit.
Exception: When a question asks you to answer using a specific unit system, you must answer in that unit system. If you answer using the incorrect unit system, you will lose an answer attempt and any associated credit, even if your answer would otherwise be considered equivalent.
 For multiplication in compound units, you can enter either * (centered dot) or  (dash). For example, and ftlb are accepted as equivalent correct units.
Select a category to view units and how to enter them
To view ALL units for all categories on this page — Select Expand all in the Help toolbar above.
Energy and work





Enter ft*lb 



Enter J/L 

Enter J/m^2*s 

Enter J/m^3 

Enter J/mol 

Enter kg/m*s^2 

Enter kg/s^3 



Enter kWh/mol 

Enter N*m 

Enter W/m^2 
Force and pressure







Enter J/m^2 

Choose (not /), and then enter kg*m^2s^2 

Enter kg/m*s 

Enter kg/s^2 
or 






Enter lb/ft 

Enter lb/in 

Enter lb/in^2 



Enter mol/L*atm 



Choose (not /), and then enter N*m rad 

Enter N*m 

Enter N/m 

Enter N/m^2 

Choose (not /), and then enter N*sm^2 



Enter Pa*s 




or 

Magnetism

Enter A*m^2 





Enter V*s 

Note: An answer of V*s is accepted for Wb, but T*m^2 is not.


Enter Wb/A 

Enter Wb/m^2 
Mass, moles, and density



Enter cm^3/mol 





Enter g/cm^3 

Enter g/mL 

Enter g/mol 



Enter kg/L 

Enter kg/m 

Enter kg/m^2 

Enter kg/m^3 

Enter M_Sun 

Enter MeV/c^2 

(mol, mole, and moles are all accepted as equivalent units)

or 
(mole, moles, and mol are all accepted as equivalent units)





Power and intensity



Enter cd*sr






Enter J/h 

Enter J/min 

Enter J/s 

Enter kg/s^3 





Enter L_Sun 















Enter W/ m^2 
Rates and rate constants



Enter L/mol*s


Enter L^2/mol^2*s 

Enter L/s 

Enter m^3/s 
or

Enter (M*s)^1 or 1/M*s 
or

Enter (M^2*s)^1 or 1/M^2*s 

Enter M/h 

Enter M/min 

Enter M/s 

Enter mol/h 

Enter mol/L*h 

Enter mol/L*min 

Enter mol/min 

Enter mol/s 

Enter Pa/h 

Enter Pa/min 

Enter Pa/s 
or

Enter s^1 or 1/s 
or 
Enter torr/h 
or 
Enter torr/min 
or 
Enter torr/s 
Temperature and thermodynamics



Enter \degC






Enter cal/g*\degC 

Enter \degC/m 

Enter \degF 



Enter J/kg*\degC 

Enter J/kg*K 

Enter J/kg*\degC 

Enter J/mol*K 

Enter J/K 

Enter J/kg 

Enter J/mol 





Enter m^2/s^2*\degC 

Enter m^2/s^2*K 


Torque and moment

Enter ft^4 

Enter in^4


Enter kg*m^2 

Choose
(not /), and then enter kg*m^2s^2 
or 
Enter kip*ft or kips*ft 
or 
Enter kip*in or kips*in 

Enter lb*ft 

Enter lb*in 

Enter m^4 

Enter N*m 

Enter slug*ft^2 