Octal to Hexadecimal Converter Online

Step-by-Step Conversion Guide

  1. Input Preparation
    • Enter octal values (digits 0-7) in any format
    • Valid separators: spaces, commas, or mixed punctuation
    • Example valid inputs: 162 157 148 or 712,346,125
  2. Configuration Options
    • Byte separation: Inserts spaces between converted hex bytes
    • Case formatting: Toggles between 0-9a-f and 0-9A-F output
  3. Result Handling
    • Directly copy converted values using the clipboard button
    • For large datasets: Use file upload (max 2MB .txt files)
    • Invalid characters are automatically filtered during conversion

Technical Conversion Methodology

Input Normalization

Automatic character filtering removes:

  • Non-octal digits (8-9, letters, symbols)
  • Excess whitespace and line breaks

Bit Group Alignment

Input padding ensures proper 3-digit grouping:

  • Raw input: 15742
  • Normalized: 015 742
  • Each group represents 9 binary bits (3 octal digits)

Base Conversion

Three-stage conversion workflow:

  1. Octal → Decimal: 1448 = 1×8² + 4×8¹ + 4×8⁰ = 10010
  2. Decimal → Hex: 100 → 6416
  3. Byte formatting: Ensures 2-character output per group

Practical Conversion Example

Network Packet Analysis

Original octal data from packet header:

116 151 142 012 115 141 147 151 143 040 123 164 141 156 144 141 162 144 012

Converted hexadecimal values:

4E 69 62 0A 4D 61 67 69 63 20 53 74 61 6E 64 61 72 64 0A

This converts to ASCII: "Nib\nMagic Standard\n" - a common network protocol signature

Need the reverse tool? Convert Hex to Octal →