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 |
|---|---|---|---|
|
Dog Pregnancy Calculator
|
Pet Tools | Open | |
|
Dog Speak Translator
|
Text Tools | Open | |
|
Dog Years Calculator (Detailed)
|
Pet Tools | Open | |
|
Dogecoin to EUR Converter
|
Currency Converters | Open | |
|
Dogecoin to GBP Converter
|
Currency Converters | Open | |
|
Dogecoin to USD Converter
|
Currency Converters | Open | |
|
Dogecoin to VND Converter
|
Currency Converters | Open | |
|
Dollar Symbol
|
Symbols & Unicode | Open | |
|
DOM Event Reference
|
Developer Tools | Open | |
|
Dominant Color from Image
|
Color Tools | Open | |
|
Donation Receipt Generator
|
PDF Tools | Open | |
|
Doppler Effect Calculator
|
Science Tools | Open | |
|
Doppler Shift Calculator (Light)
|
Physics Tools | Open | |
|
Doppler Shift Calculator (Sound)
|
Physics Tools | Open | |
|
Doppler Shift Radar Calculator
|
Engineering Tools | Open | |
|
Dosage By Weight Calculator
|
Health & Fitness | Open | |
|
Dot Gain Calculator
|
Printing Tools | Open | |
|
Dot Grid Paper Generator
|
PDF Tools | Open | |
|
Dot Product Calculator
|
Math Calculators | Open | |
|
dot.case Converter
|
Text Tools | Open | |
|
Dots Coefficient Calculator
|
Fitness Tools | Open | |
|
Dots Score Calculator
|
Sports Tools | Open | |
|
Double Arrow Symbol
|
Symbols & Unicode | Open | |
|
Double Dagger Symbol
|
Symbols & Unicode | Open | |
|
Double Integral Calculator
|
Math Calculators | Open | |
|
Double Integral Numeric
|
Math Calculators | Open | |
|
Double Slit Interference Calculator
|
Physics Tools | Open | |
|
Double Time Calculator
|
Finance Tools | Open | |
|
Double-Struck Text Converter
|
Text Tools | Open | |
|
Dough Hydration Calculator
|
Food & Cooking | Open | |
|
Dovetail Layout Calculator
|
Woodworking | Open | |
|
Dowel Spacing Calculator
|
Woodworking | Open | |
|
Down Arrow Symbol
|
Symbols & Unicode | Open | |
|
Down Payment Calculator
|
Real Estate Tools | Open | |
|
Download Time Calculator
|
Networking Tools | Open | |
|
Downtime From SLA Calculator
|
Developer Tools | Open | |
|
DPI Calculator
|
Gaming Tools | Open | |
|
DPI for Print Calculator
|
Printing Tools | Open | |
|
DPI to PPI Converter
|
Electrical Tools | Open | |
|
DPMO Calculator
|
Engineering Tools | Open | |
|
DPS Calculator (Game)
|
Gaming Tools | Open | |
|
Drag Coefficient Calculator
|
Physics Tools | Open | |
|
Drag Force Calculator
|
Physics Tools | Open | |
|
Drag Polar Calculator
|
Engineering Tools | Open | |
|
Dragon Name Generator
|
Generators | Open | |
|
Drain Pipe Slope Calculator
|
Plumbing Tools | Open | |
|
Drainage Fixture Units
|
Engineering Tools | Open | |
|
Drawdown Calculator
|
Finance Tools | Open |
Showing 2,113–2,160 of 8,445 tools