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All Tools

English Language
English Language Tools — overview
Readability Test and Improve
Write in Simple or Basic English
New Words English Dictionary
Learn English Text
Filtered Word Frequencies
Vocabulary Builder
Dictionary

Text Tools
Text Tools — overview
Text Analyzer — word and phrase frequencies
Word Count
Sort, Clean and Reformat a List
Grep — filter lines by pattern
Word Frequency Counter
Understand Foreign Language Text
Misspellizer — generate spelling mistakes

Webmaster and SEO
Webmaster Tools — overview
Keyword Suggestions
Find English Keywords

Unit Conversion
Unit Converter — overview
Length
Mass
Area
Volume
Energy
Power
Pressure
Force
Density
Torque
Line Density
Spread Rate (mass)
Spread Rate (volume)

Math
Math Tools — overview
Math Calculator (Octave)
Calculator Tutorial
Prime Factorization Calculator
Compound Interest Calculator
Lease Calculator
Loan Calculator
Present Value of Future Money
Retirement Planning Calculator

Other
Image Converter — 100+ formats
Other Utilities