All Free Tools
8,445 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 |
|---|---|---|---|
|
Angel Name Generator
|
Generators | Open | |
|
Angle Converter
|
Unit Converters | Open | |
|
Angle of View Calculator
|
Photography Tools | Open | |
|
Angle Symbol
|
Symbols & Unicode | Open | |
|
Angstrom Symbol
|
Symbols & Unicode | Open | |
|
Angular Acceleration Calculator
|
Science Tools | Open | |
|
Angular Displacement Calculator
|
Physics Tools | Open | |
|
Angular Momentum Calculator
|
Physics Tools | Open | |
|
Angular Size Calculator
|
Space & Astronomy | Open | |
|
Angular Velocity Calculator
|
Science Tools | Open | |
|
Animal Anesthesia Dose Calculator
|
Veterinary Tools | Open | |
|
Animal Emoji List
|
Symbols & Unicode | Open | |
|
Animal IV Fluid Rate Calculator
|
Health & Fitness | Open | |
|
Animal Pregnancy Due Date
|
Veterinary Tools | Open | |
|
Anion Gap Calculator
|
Health & Fitness | Open | |
|
Anion Gap Calculator
|
Health & Fitness | Open | |
|
Ankle Fracture Risk (Ottawa Rules)
|
Health & Fitness | Open | |
|
Annealing Temperature Calculator
|
Biology Tools | Open | |
|
Anniversary Counter
|
Date & Time | Open | |
|
Annual Cost of Habit Calculator
|
Finance Tools | Open | |
|
Annual to Hourly Calculator
|
HR & Payroll | Open | |
|
Annuity Calculator
|
Finance Tools | Open | |
|
Annuity Payout Calculator
|
Insurance Tools | Open | |
|
Annular Velocity Calculator
|
Engineering Tools | Open | |
|
Antenna Gain Calculator
|
Engineering Tools | Open | |
|
Antibiotic Dose by Weight Calculator
|
Health & Fitness | Open | |
|
Anticoagulant Dose Calculator
|
Health & Fitness | Open | |
|
Antimony Electron Configuration
|
Chemistry Tools | Open | |
|
Antimony Element Properties
|
Chemistry Tools | Open | |
|
Antimony Oxidation States
|
Chemistry Tools | Open | |
|
Any Base to Decimal Converter
|
Developer Tools | Open | |
|
Aortic Dissection Risk Score (ADD-RS)
|
Health & Fitness | Open | |
|
APACHE II Score Calculator
|
Health & Fitness | Open | |
|
APACHE II Score Calculator
|
Health & Fitness | Open | |
|
Apache VirtualHost Generator
|
Developer Tools | Open | |
|
Apfel PONV Score Calculator
|
Health & Fitness | Open | |
|
Apgar Score
|
Health & Fitness | Open | |
|
API Gravity Calculator
|
Engineering Tools | Open | |
|
API Key Generator
|
Developer Tools | Open | |
|
App Icon Resizer
|
Image Tools | Open | |
|
App Icon Sizes Reference
|
Developer Tools | Open | |
|
Apparent Attenuation Calculator
|
Food & Cooking | Open | |
|
Apparent Magnitude Calculator
|
Astrophysics Tools | Open | |
|
Apparent Temperature Calculator
|
Science Tools | Open | |
|
Appliance Energy Calculator
|
Home & DIY | Open | |
|
Appliance Running Cost Calculator
|
Electrical Tools | Open | |
|
Approximately Equal Symbol
|
Symbols & Unicode | Open | |
|
APRI Score Calculator
|
Health & Fitness | Open |
Showing 289–336 of 8,445 tools