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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 |
|---|---|---|---|
|
Ka Calculator
|
Chemistry Tools | Open | |
|
Karat to Gold Percentage Converter
|
Number Tools | Open | |
|
Karnofsky Performance Status
|
Health & Fitness | Open | |
|
Karvonen Formula
|
Fitness Tools | Open | |
|
Katch-McArdle BMR Calculator
|
Health & Fitness | Open | |
|
Katz ADL Score
|
Health & Fitness | Open | |
|
Kb Calculator
|
Chemistry Tools | Open | |
|
kbps to bps Converter
|
Unit Converters | Open | |
|
kbps to GB/s Converter
|
Unit Converters | Open | |
|
kbps to Gbps Converter
|
Unit Converters | Open | |
|
kbps to MB/s Converter
|
Unit Converters | Open | |
|
kbps to Mbps Converter
|
Unit Converters | Open | |
|
KDIGO AKI Staging
|
Health & Fitness | Open | |
|
kebab-case Converter
|
Text Tools | Open | |
|
Keccak-256 Hash Generator
|
Developer Tools | Open | |
|
Keg Carbonation Calculator
|
Food & Cooking | Open | |
|
Kelly Criterion Calculator
|
Math Calculators | Open | |
|
Kelvin to Celsius Converter
|
Unit Converters | Open | |
|
Kelvin to Fahrenheit Converter
|
Unit Converters | Open | |
|
Kelvin to Rankine Converter
|
Unit Converters | Open | |
|
Kelvin to Reaumur Converter
|
Unit Converters | Open | |
|
Keno Odds Calculator
|
Gaming Tools | Open | |
|
Kepler's Third Law Calculator
|
Space & Astronomy | Open | |
|
Kerf Allowance Calculator
|
Construction Tools | Open | |
|
KES to EUR Converter
|
Currency Converters | Open | |
|
KES to USD Converter
|
Currency Converters | Open | |
|
Ketchup Cups to Grams
|
Food & Cooking | Open | |
|
Ketchup Grams to Cups
|
Food & Cooking | Open | |
|
Keto Macro Calculator
|
Health & Fitness | Open | |
|
Key Signature Finder
|
Music Tools | Open | |
|
Key Stretching Time Calculator
|
Security & Privacy | Open | |
|
Keyframe Interval Calculator
|
Video Tools | Open | |
|
Keyway Size Calculator
|
Engineering Tools | Open | |
|
Keyword CPC Estimator
|
SEO Tools | Open | |
|
Keyword Density Checker
|
Text Tools | Open | |
|
Keyword Frequency Writer
|
Writing Tools | Open | |
|
Keyword Permutation Generator
|
SEO Tools | Open | |
|
kg/m3 to lb/ft3 Converter
|
Unit Converters | Open | |
|
kg/m³ to g/cm³ Converter
|
Unit Converters | Open | |
|
kg/m³ to g/mL Converter
|
Unit Converters | Open | |
|
kgf-m to Foot Pounds Converter
|
Unit Converters | Open | |
|
kgf-m to Inch Pounds Converter
|
Unit Converters | Open | |
|
kgf-m to Newton Meters Converter
|
Unit Converters | Open | |
|
Khorana VTE Risk Score for Cancer Patients
|
Health & Fitness | Open | |
|
Ki Inhibition Calculator
|
Biology Tools | Open | |
|
Kibibytes to Bits Converter
|
Unit Converters | Open | |
|
Kibibytes to Bytes Converter
|
Unit Converters | Open | |
|
Kibibytes to Gibibytes Converter
|
Unit Converters | Open |
Showing 3,889–3,936 of 8,451 tools