All Free Tools
8,451 free online tools across 85 categories
Every tool here runs in your browser — no sign-up, no upload, nothing to install. Convert files, format code, generate text, run calculations, and check SEO across PDF, image, developer, finance, and unit-conversion tools. Pick one and start.
| Tool | Category | Description | Action |
|---|---|---|---|
|
CFM to L/min Converter
|
Unit Converters | Open | |
|
CFM to m3/h Converter
|
Unit Converters | Open | |
|
CFU per mL Calculator
|
Science Tools | Open | |
|
CHA2DS2-VASc Score Calculator
|
Health & Fitness | Open | |
|
CHA2DS2-VASc Stroke Risk Calculator
|
Health & Fitness | Open | |
|
CHADS2 Score Calculator
|
Health & Fitness | Open | |
|
Chain Length Calculator
|
Engineering Tools | Open | |
|
Chandrasekhar Mass Calculator
|
Space & Astronomy | Open | |
|
Changelog Entry Formatter
|
Developer Tools | Open | |
|
Character Count With Limit
|
Text Tools | Open | |
|
Character Counter
|
Productivity | Open | |
|
Character Counter for Twitter/X
|
Social Media Tools | Open | |
|
Character Counter With Spaces
|
Language Tools | Open | |
|
Character Frequency Counter
|
Text Tools | Open | |
|
Character Frequency Map
|
Text Tools | Open | |
|
Character Name Generator
|
Gaming Tools | Open | |
|
Characteristic Polynomial Calculator
|
Math Calculators | Open | |
|
Charles's Law Calculator
|
Chemistry Tools | Open | |
|
Charlson Comorbidity Index
|
Health & Fitness | Open | |
|
Check Mark Symbol
|
Symbols & Unicode | Open | |
|
Checksum Calculator
|
Developer Tools | Open | |
|
Chemical Oxygen Demand (COD) Calculator
|
Engineering Tools | Open | |
|
Chess Elo Change Calculator
|
Gaming Tools | Open | |
|
Chess Rating Calculator
|
Gaming Tools | Open | |
|
Chess Rating Performance Calculator
|
Gaming Tools | Open | |
|
Chess Symbols
|
Symbols & Unicode | Open | |
|
CHF to EUR Converter
|
Currency Converters | Open | |
|
CHF to GBP Converter
|
Currency Converters | Open | |
|
CHF to USD Converter
|
Currency Converters | Open | |
|
Chi Square Calculator
|
Math Calculators | Open | |
|
Chi Square Genetics
|
Biology Tools | Open | |
|
Chi-Square Distribution Calculator
|
Math Calculators | Open | |
|
Chi-Square Goodness of Fit
|
Statistics Tools | Open | |
|
Chi-Square Independence Test
|
Statistics Tools | Open | |
|
Chia Seeds Cups to Grams
|
Food & Cooking | Open | |
|
Chia Seeds Grams to Cups
|
Food & Cooking | Open | |
|
Chicken Coop Size Calculator
|
Pet Tools | Open | |
|
Chicken Feed Calculator
|
Agriculture Tools | Open | |
|
Chickpeas Cups to Grams
|
Food & Cooking | Open | |
|
Chickpeas Grams to Cups
|
Food & Cooking | Open | |
|
Child Adult Height Predictor
|
Parenting Tools | Open | |
|
Child-Pugh Score Calculator
|
Health & Fitness | Open | |
|
Child-Turcotte-Pugh Score Calculator
|
Health & Fitness | Open | |
|
Childhood Vaccine Schedule Helper
|
Parenting Tools | Open | |
|
Chiller Tonnage Calculator
|
HVAC Tools | Open | |
|
China Country Facts
|
Travel Tools | Open | |
|
China Time Zones Overview
|
Number Tools | Open | |
|
China Visa Photo
|
Image Tools | Open |
Showing 1,201–1,248 of 8,451 tools