Guides
Short, practical guides that go with our free tools. Each one explains the idea behind a tool, shows worked examples and points out the mistakes people make most often.
Anagram Solver
- Word games
How to Unscramble Letters: 9 Methods That Work
Practical ways to unscramble any set of letters faster: spot common endings, group the vowels, use blanks and let a solver check your ideas.
Read the guide - Word games
Scrabble Letter Values and Tile Strategy
Every standard Scrabble tile value and how many of each tile there are, plus the strategy ideas that matter most: leaves, bonus squares and bingos.
Read the guide - Word games
Famous Anagrams, Word Pairs and How They Are Made
From listen and silent to a 17th-century scientific secret, a tour of well-known anagrams and what makes a good one.
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Unit Converter
- Calculators
Metric and Imperial Conversions: A Practical Cheat Sheet
The exact conversion factors for length, weight and volume, easy mental shortcuts, and the US versus UK differences that cause most mistakes.
Read the guide - Calculators
Celsius, Fahrenheit and Kelvin: How to Convert Temperatures
The formulas, a quick mental shortcut, key reference points and the reasons Kelvin and Rankine exist, with worked examples.
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JSON Formatter & Validator
Open the JSON Formatter & Validator →
- Developer tools
Common JSON Errors and How to Fix Each One
The ten mistakes behind almost every "Unexpected token" message, with a wrong and a right example for each, and how to find the exact spot quickly.
Read the guide - Developer tools
JSON Syntax Cheat Sheet: Types, Escapes and Rules
One page with every JSON data type, the string escapes, the number rules and the differences from JavaScript objects, YAML and Python dictionaries.
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Team Generator
- Groups
How to Make Fair Teams: Five Methods Compared
Random draws, captains, snake drafts, rating-based balancing and algorithms compared, with what each is good at and where it goes wrong.
Read the guide - Groups
Rating Skill and Balancing Mixed Teams
How to rate players on a simple 1 to 5 scale, why averages alone mislead, and how to balance skill and gender across teams without arguments.
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