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 |
|---|---|---|---|
|
Semolina Cups to Grams
|
Food & Cooking | Open | |
|
Semolina Grams to Cups
|
Food & Cooking | Open | |
|
SemVer Range Tester
|
Developer Tools | Open | |
|
Sensitivity & Specificity Calculator
|
Statistics Tools | Open | |
|
Sensitivity Converter
|
Gaming Tools | Open | |
|
Sentence Case Converter
|
Text Tools | Open | |
|
Sentence Counter
|
Text Tools | Open | |
|
Sentence Length Analyzer
|
Text Tools | Open | |
|
Sentence Rephraser
|
Language Tools | Open | |
|
SEO Slug Generator
|
SEO Tools | Open | |
|
Separable ODE Solver
|
Math Calculators | Open | |
|
September Birth Flower
|
Reference Tools | Open | |
|
September Birthstone
|
Reference Tools | Open | |
|
Septic Tank Size Calculator
|
Plumbing Tools | Open | |
|
Sequence Nth Term Finder
|
Math Calculators | Open | |
|
Serial Dilution Calculator
|
Chemistry Tools | Open | |
|
Serial Dilution Calculator (Microbiology)
|
Science Tools | Open | |
|
Series Resistance Calculator
|
Engineering Tools | Open | |
|
SERP Snippet Preview
|
SEO Tools | Open | |
|
Serum Osmolal Gap Calculator
|
Health & Fitness | Open | |
|
Serum Osmolality Calculator
|
Health & Fitness | Open | |
|
Server-Sent Events Builder
|
Developer Tools | Open | |
|
Serving Size Calculator
|
Food & Cooking | Open | |
|
Servo Torque Calculator
|
Engineering Tools | Open | |
|
Sesame Seeds Cups to Grams
|
Food & Cooking | Open | |
|
Sesame Seeds Grams to Cups
|
Food & Cooking | Open | |
|
Set Operations Calculator
|
Math Calculators | Open | |
|
Settlement Calculator
|
Engineering Tools | Open | |
|
Settling Velocity (Stokes Law)
|
Engineering Tools | Open | |
|
Setup Time Reduction (SMED)
|
Engineering Tools | Open | |
|
Severance Pay Calculator
|
HR & Payroll | Open | |
|
Sewing Seam Allowance Calculator
|
Engineering Tools | Open | |
|
Sgarbossa Criteria Calculator
|
Health & Fitness | Open | |
|
SGD to EUR Converter
|
Currency Converters | Open | |
|
SGD to GBP Converter
|
Currency Converters | Open | |
|
SGD to USD Converter
|
Currency Converters | Open | |
|
SHA-1 Hash Generator
|
Developer Tools | Open | |
|
SHA-224 Hash Generator
|
Developer Tools | Open | |
|
SHA-256 Hash Generator
|
Developer Tools | Open | |
|
SHA-3 Hash Generator
|
Developer Tools | Open | |
|
SHA-384 Hash Generator
|
Developer Tools | Open | |
|
SHA-512 Hash Generator
|
Developer Tools | Open | |
|
SHA-512 Hash Generator
|
Developer Tools | Open | |
|
SHA1 Hash Generator
|
Developer Tools | Open | |
|
SHA224 Hash Generator
|
Developer Tools | Open | |
|
SHA256 Hash Generator
|
Developer Tools | Open | |
|
SHA3-256 Hash Generator
|
Developer Tools | Open | |
|
SHA3-512 Hash Generator
|
Developer Tools | Open |
Showing 6,529–6,576 of 8,445 tools