diff --git a/calibration.html b/calibration.html
index a1fa4e5..636ca93 100644
--- a/calibration.html
+++ b/calibration.html
@@ -143,7 +143,7 @@
             <label>Hot end temperature (deg C): <input type="number" name="hotendtemp" value="200" min="160" max="450"></label>
             <label>Bed temperature (deg C): <input type="number" name="bedtemp" value="60" min="5" max="150"></label><br />
             <h4>Part Cooling Fan</h4>
-            <p>Printing with PLA typically has the part cooling fan come on from layer 2. Alter this default bahaviour here:</p>
+            <p>Printing with PLA typically has the part cooling fan come on from layer 2. Alter this default behaviour here:</p>
             <label for="pc">Select part cooling fan behaviour:</label>
             <select name="pc">
                 <option value="0">100% fan from layer 2</option>
@@ -198,7 +198,7 @@
         <p><a href="https://marlinfw.org/docs/gcode/G000-G001.html" target="_blank">G1</a> sends a move command to the printer, in this case asking the extruder to advance 100mm at a speed of 100mm/sec.</p>
         <p>The filament will then slowly go through the extruder and hot end. Once the extrusion finishes, we measure the distance between the mark and the entry to the extruder.</p>
         <img src="img/mark2.jpg" />
-        <p>Ideally, 20mm remains, which means exactly 100mm was extruded. If your distance is anything other that this, complete the form below to calculate the correct E-steps:</p>
+        <p>Ideally, 20mm remains, which means exactly 100mm was extruded. If your distance is anything other than this, complete the form below to calculate the correct E-steps:</p>
         <form name="estepsForm" onsubmit="return false;">
             <p><label>Previous E-steps as reported by M92: <input type="number" name="oldSteps" value="93"></label></p>
             <p><label>Measurement between extruder entry and mark on filament (mm): <input type="number" name="remainingFil" value="20"></label></p>
@@ -212,7 +212,7 @@
                 <p>You may wish to repeat this test with the new E-steps value to verify.</p>
             </div>
         </form>
-		<p>Although starting a new print or power cycling will achieve this, it may be safer to put the printer back into absolute position mode after completing this calinration by sending:</p>
+		<p>Although starting a new print or power cycling will achieve this, it may be safer to put the printer back into absolute position mode after completing this calibration by sending:</p>
         <pre>G90</pre>
     </div>
 
@@ -224,9 +224,9 @@
             <h5>When required:</h5>
             <p>Base calibration, as well as any time there has been a change to the extruder/hot end.</p>
             <h5>Tools:</h5>
-            <p>Your favourite slicer. Accurate vernier calipers (two decimal places is much more prefferable to a set with only one).</p>
+            <p>Your favourite slicer. Accurate vernier callipers (two decimal places is much more preferable to a set with only one).</p>
         </div>
-        <p>Our E-steps are now correct in the firmware, so we will move on to calibrating the slicer. Each slicer has a setting to control the overall amount of filament extruded by the printer. If the flow rate is increased, more filament will be extruded. If the flow rate is descreased, less filament will be extruded.</p>
+        <p>Our E-steps are now correct in the firmware, so we will move on to calibrating the slicer. Each slicer has a setting to control the overall amount of filament extruded by the printer. If the flow rate is increased, more filament will be extruded. If the flow rate is decreased, less filament will be extruded.</p>
         <p>In Simplify3D and PrusaSlicer, this is called <b>Extrusion Multiplier</b>. Cura calls it <b>Flow</b>.</p>
         <p>My method of determining the correct flow rate is to print a hollow, single wall cube with a specified wall thickness, then measure the actual thickness of the wall and adjust the flow rate in the slicer to suit.</p>
         <p>Unfortunately, I can't provide pre-sliced gcode for this process. It is vital to use gcode generated by <i>YOUR</i> slicer. Setting up your slicer to print the cube in the right way should be simple by following these steps:</p> 
@@ -287,7 +287,7 @@
         </table>
         <p>Now slice and print!</p>
         <h2>Interpreting Results:</h2>
-        <p>Use vernier calipers to measure the outer wall thickness of the hollow cube. Take measurements in multiple places/sides and average them.</p>
+        <p>Use vernier callipers to measure the outer wall thickness of the hollow cube. Take measurements in multiple places/sides and average them.</p>
         <a href="#" data-featherlight="img/measurecube.jpg"><img class="thumb" src="img/measurecube.jpg" /></a>
         <p>If your measurement is <i>significantly</i> off, the following calculator can then be used to calculate the new flow rate:</p>
         <table>