Reference tables
Clean, complete lookup tables you can search, sort and download as CSV. No pop-ups, no login, just the data.
ASCII Table
All 128 ASCII characters with their decimal, hexadecimal and binary codes.
128 entries CSV
GPA Scale Chart (4.0 Scale)
Letter grades converted to percentages and GPA points on the standard US 4.0 scale, from A+ to F.
13 entries CSV
Military Time Chart
Every hour of the 24-hour clock with its 12-hour equivalent and how to say it out loud, from 0000 to 2400.
25 entries CSV
Morse Code Alphabet
The complete International Morse Code chart: every letter from A to Z, digits 0 to 9 and common punctuation, with a copy button on each code.
51 entries CSV
Roman Numerals 1 to 100
Every Roman numeral from 1 to 100 in one sortable chart, plus useful years like 1990 (MCMXC) and 2026 (MMXXVI), with a copy button on each numeral.
108 entries CSV