Choose a column that contains the same spacing for each line from top to bottom
Measure baseline (bottom of font) from the top line to baseline to last line in millimeters
Divide mm height by number of lines
158mm / 59 lines = 2.678mm
Convert mm to inches
2.678mm / 25.4mm = 0.1054 inches
Convert inches to points
0.1054 inches x 72 = 7.5888 point font
[Reference: 72 points per inch and 25.4 mm per inch]
Schuyler RSV Quentel with Apocrypha
182 / 45 lines = 4.04mm
4.04mm / 25.4 = 0.15923
0.15923 x 72 = 11.8 point font (Includes the leading or space between the characters)
Published font by Schuyler: 10pt Milo
The smallest font that I am able to comfortably read for extended periods of time is 8.2pt on 8.5pt Lexicon as published by Cambridge in the ESV Diadem edition. However I prefer the example from above as published by Schuyler in the RSV edition.
Here are some examples of Bibles I currently own
Cambridge NRSV w/ Apocrypha = 9-pt / 9.3-pt
Cambridge ESV Diadem = 8.25 / 8.4-pt
Cambridge Topaz = 10-pt / 10.8-pt
Schuyler ESV Stridon = 9.5-pt / 11.1-pt
Schuyler RSV Quentel w/ Apocrypha = 9-pt / 11.4-pt
Crossway ESV Study Bible = 9-pt / 9.9-pt
Crossway Heirloom Veritas = 9.25-pt / 12.45-pt
Crossway Heirloom Alpha = 8-pt / 9.2-pt
Cambridge KJV Concord = 8-pt / 9-pt
Cambridge NASB Clarion = 8.75-pt / 10.5-pt
New Oxford Annotated Bible RSV with Apocrypha = 10-pt / 10.13-pt
Thomas Nelson NKJV Single Column VBV 2025 = 9-pt / 9.98-pt
