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 |
|---|---|---|---|
|
Curve Superelevation Calculator
|
Engineering Tools | Open | |
|
Customer Acquisition Cost Calculator
|
E-Commerce Tools | Open | |
|
Customer Lifetime Value Calculator
|
E-Commerce Tools | Open | |
|
Cut and Fill Volume Calculator
|
Engineering Tools | Open | |
|
Cut Off Grade Calculator
|
Engineering Tools | Open | |
|
CV Maker
|
PDF Tools | Open | |
|
Cyberpunk Name Generator
|
Generators | Open | |
|
Cycle Time Calculator
|
Engineering Tools | Open | |
|
Cycle Time Calculator (PM)
|
Productivity | Open | |
|
Cycling FTP Test Calculator
|
Fitness Tools | Open | |
|
Cycling NP / IF / TSS Calculator
|
Sports Tools | Open | |
|
Cycling Power Calculator
|
Sports Tools | Open | |
|
Cycling Speed Calculator
|
Sports Tools | Open | |
|
Cycling W' (W-Prime) Calculator
|
Fitness Tools | Open | |
|
Cyclotron Frequency Calculator
|
Astrophysics Tools | Open | |
|
Cyclotron Resonance Frequency Calculator
|
Physics Tools | Open | |
|
Cyrillic Transliterator
|
Language Tools | Open | |
|
CZK to EUR Converter
|
Currency Converters | Open | |
|
CZK to GBP Converter
|
Currency Converters | Open | |
|
CZK to USD Converter
|
Currency Converters | Open | |
|
D-Value Thermal Death Calculator
|
Biology Tools | Open | |
|
D&D Ability Score Roller
|
Gaming Tools | Open | |
|
D20 Roller
|
Gaming Tools | Open | |
|
DAC Output Calculator
|
Electrical Tools | Open | |
|
Dagger Symbol
|
Symbols & Unicode | Open | |
|
Daily Calorie Calculator
|
Health & Fitness | Open | |
|
Daily Calorie Deficit Calculator
|
Health & Fitness | Open | |
|
Daily Fiber Target Calculator
|
Health & Fitness | Open | |
|
Daily Schedule Maker
|
Productivity | Open | |
|
Daily Water for Skin Calculator
|
Beauty Tools | Open | |
|
Daily Water Intake Calculator
|
Health & Fitness | Open | |
|
DALY Calculator
|
Health & Fitness | Open | |
|
DALYs Averted Calculator
|
Health & Fitness | Open | |
|
Damage Formula Helper
|
Gaming Tools | Open | |
|
Damage Per Second Calculator
|
Gaming Tools | Open | |
|
Damped Frequency Calculator
|
Engineering Tools | Open | |
|
Damped Oscillation Calculator
|
Physics Tools | Open | |
|
Damping Ratio Calculator
|
Engineering Tools | Open | |
|
Damping Ratio Control
|
Engineering Tools | Open | |
|
DAPT Score Calculator
|
Health & Fitness | Open | |
|
Darcy Flow Reservoir Calculator
|
Engineering Tools | Open | |
|
Darcy-Weisbach Calculator
|
Physics Tools | Open | |
|
Dark Elf Name Generator
|
Generators | Open | |
|
Dark Mode Color Generator
|
Color Tools | Open | |
|
Darken Color Tool
|
Color Tools | Open | |
|
Dart Calculation (Sewing)
|
Number Tools | Open | |
|
Dart Checkout Calculator
|
Sports Tools | Open | |
|
Darts 501 Scorer
|
Sports Tools | Open |
Showing 1,825–1,872 of 8,445 tools