diff --git a/doc/src/pair_charmm.rst b/doc/src/pair_charmm.rst
index 768ede1320..8ff6508dea 100644
--- a/doc/src/pair_charmm.rst
+++ b/doc/src/pair_charmm.rst
@@ -144,7 +144,7 @@ artifacts.
    conversion factor used internally in the code, from the LAMMPS value
    to the CHARMM value, as if it were effectively a parameter of the
    force field.  This is because the CHARMM code uses a slightly
-   different value for the this conversion factor in :doc:`real units <units>` (Kcal/mole), namely CHARMM = 332.0716, LAMMPS =
+   different value for the this conversion factor in :doc:`real units <units>` (kcal/mol), namely CHARMM = 332.0716, LAMMPS =
    332.06371.  This is to enable more precise agreement by LAMMPS with
    the CHARMM force field energies and forces, when using one of these
    two CHARMM pair styles.
diff --git a/doc/src/run_style.rst b/doc/src/run_style.rst
index aaa6b6bad5..e1dda78374 100644
--- a/doc/src/run_style.rst
+++ b/doc/src/run_style.rst
@@ -277,7 +277,7 @@ Even a LJ system can benefit from rRESPA if the interactions are
 divided by the inner, middle and outer keywords.  A 2-fold or more
 speedup can be obtained while maintaining good energy conservation.
 In real units, for a pure LJ fluid at liquid density, with a sigma of
-3.0 Angstroms, and epsilon of 0.1 Kcal/mol, the following settings
+3.0 Angstroms, and epsilon of 0.1 kcal/mol, the following settings
 seem to work well:
 
 .. code-block:: LAMMPS
diff --git a/doc/src/units.rst b/doc/src/units.rst
index da81c17078..2554806fb5 100644
--- a/doc/src/units.rst
+++ b/doc/src/units.rst
@@ -30,7 +30,7 @@ and dump files.  Typically, this command is used at the very beginning
 of an input script.
 
 For all units except *lj*, LAMMPS uses physical constants from
-www.physics.nist.gov.  For the definition of Kcal in real units,
+www.physics.nist.gov.  For the definition of kcal in real units,
 LAMMPS uses the thermochemical calorie = 4.184 J.
 
 The choice you make for units simply sets some internal conversion
@@ -102,17 +102,17 @@ For style *real*, these are the units:
 * mass = grams/mole
 * distance = Angstroms
 * time = femtoseconds
-* energy = Kcal/mole
+* energy = kcal/mol
 * velocity = Angstroms/femtosecond
-* force = Kcal/mole-Angstrom
-* torque = Kcal/mole
+* force = (kcal/mol)/Angstrom
+* torque = kcal/mol
 * temperature = Kelvin
 * pressure = atmospheres
 * dynamic viscosity = Poise
 * charge = multiple of electron charge (1.0 is a proton)
 * dipole = charge\*Angstroms
 * electric field = volts/Angstrom
-* density = gram/cm\^dim
+* density = g/cm\^dim
 
 For style *metal*, these are the units: