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 |
|---|---|---|---|
|
Star Emoji List
|
Symbols & Unicode | Open | |
|
Star Magnitude Calculator
|
Space & Astronomy | Open | |
|
Star of David Symbol
|
Symbols & Unicode | Open | |
|
Star Symbols
|
Symbols & Unicode | Open | |
|
Star Trail Exposure Calculator
|
Photography Tools | Open | |
|
Stark Effect Calculator
|
Physics Tools | Open | |
|
Starship Name Generator
|
Generators | Open | |
|
Startup Name Generator
|
Generators | Open | |
|
Startup Runway Calculator
|
Finance Tools | Open | |
|
Static Friction Calculator
|
Science Tools | Open | |
|
Statically Determinate Check
|
Engineering Tools | Open | |
|
Stationing Calculator
|
Engineering Tools | Open | |
|
Statistical Power Analysis Calculator
|
Statistics Tools | Open | |
|
Statistics Calculator
|
Number Tools | Open | |
|
Steady State Error Calculator
|
Engineering Tools | Open | |
|
Steady-State Drug Concentration Calculator
|
Science Tools | Open | |
|
Steam Flow Calculator
|
HVAC Tools | Open | |
|
Steam ID Converter
|
Gaming Tools | Open | |
|
Steel Angle Weight Calculator
|
Engineering Tools | Open | |
|
Steel Beam Weight Calculator
|
Engineering Tools | Open | |
|
Steel Channel Weight Calculator
|
Engineering Tools | Open | |
|
Steel Flat Bar Weight Calculator
|
Engineering Tools | Open | |
|
Steel Hexagon Bar Weight Calculator
|
Engineering Tools | Open | |
|
Steel Pipe Weight Calculator
|
Engineering Tools | Open | |
|
Steel Plate Weight Calculator
|
Engineering Tools | Open | |
|
Steel Round Bar Weight Calculator
|
Engineering Tools | Open | |
|
Steel Round Tube Weight Calculator
|
Engineering Tools | Open | |
|
Steel Sheet Weight Calculator
|
Engineering Tools | Open | |
|
Steel Square Bar Weight Calculator
|
Engineering Tools | Open | |
|
Steel Square Tube Weight Calculator
|
Engineering Tools | Open | |
|
Steel Tube Weight Calculator
|
Engineering Tools | Open | |
|
Stefan-Boltzmann Calculator
|
Science Tools | Open | |
|
Stefan-Boltzmann Power Calculator
|
Physics Tools | Open | |
|
Stellar Luminosity Calculator
|
Space & Astronomy | Open | |
|
Stellar Parallax Calculator
|
Astrophysics Tools | Open | |
|
Step To Calorie Calculator
|
Health & Fitness | Open | |
|
Stepper Motor Resolution Calculator
|
Engineering Tools | Open | |
|
Steps to Km Calculator
|
Sports Tools | Open | |
|
Steps to Miles Calculator
|
Sports Tools | Open | |
|
Stereo to Mono Converter
|
Audio Tools | Open | |
|
Sterilization F Value Calculator
|
Science Tools | Open | |
|
Steroid Conversion Calculator
|
Health & Fitness | Open | |
|
Steroid Equivalence Calculator
|
Health & Fitness | Open | |
|
Stilb to cd/m² Converter
|
Unit Converters | Open | |
|
Stilb to Foot-lamberts Converter
|
Unit Converters | Open | |
|
Stilb to Nits Converter
|
Unit Converters | Open | |
|
Stirling Number Calculator
|
Math Calculators | Open | |
|
Stock Average Calculator
|
Finance Tools | Open |
Showing 6,913–6,960 of 8,451 tools