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 |
|---|---|---|---|
|
Gross To Net Calculator
|
Finance Tools | Open | |
|
Ground Speed Calculator
|
Aviation Tools | Open | |
|
Ground Wire Size Calculator
|
Electrical Tools | Open | |
|
Grounding Resistance Calculator
|
Electrical Tools | Open | |
|
Groundwater Flow Calculator
|
Science Tools | Open | |
|
Group Delay Helper
|
DSP Tools | Open | |
|
Group Gift Splitter
|
Finance Tools | Open | |
|
Growing Degree Day Calculator
|
Weather Tools | Open | |
|
Growing Degree Days Calculator
|
Agriculture Tools | Open | |
|
Growth Rate Constant
|
Biology Tools | Open | |
|
Growth Velocity Calculator
|
Health & Fitness | Open | |
|
GSM to Pound Paper Converter
|
Unit Converters | Open | |
|
GTT Glucose Screening Interpreter
|
Health & Fitness | Open | |
|
Guild Name Generator
|
Gaming Tools | Open | |
|
Guitar Chord Finder
|
Music Tools | Open | |
|
Gutter Size Calculator
|
Home & DIY | Open | |
|
Gwei to ETH Converter
|
Crypto Tools | Open | |
|
Gymnastics Score Calculator
|
Sports Tools | Open | |
|
H-Bridge Calculator
|
Electrical Tools | Open | |
|
Habit Tracker
|
Productivity | Open | |
|
Habit Tracker Printable
|
PDF Tools | Open | |
|
Hafnium Electron Configuration
|
Chemistry Tools | Open | |
|
Hafnium Oxidation States
|
Chemistry Tools | Open | |
|
Hair Developer Volume Calculator
|
Beauty Tools | Open | |
|
Hair Dye Mixing Ratio Calculator
|
Beauty Tools | Open | |
|
Hair Growth Calculator
|
Beauty Tools | Open | |
|
Half Birthday Calculator
|
Date & Time | Open | |
|
Half Cell Potential Calculator
|
Chemistry Tools | Open | |
|
Half Elf Name Generator
|
Generators | Open | |
|
Half Life Calculator
|
Science Tools | Open | |
|
Half Life Drug Calculator
|
Health & Fitness | Open | |
|
Half Marathon Pace Calculator
|
Sports Tools | Open | |
|
Half-Life Decay Calculator
|
Physics Tools | Open | |
|
Half-Value Layer Calculator
|
Engineering Tools | Open | |
|
Hall Voltage Calculator
|
Physics Tools | Open | |
|
Hamilton Anxiety Rating Scale
|
Health & Fitness | Open | |
|
Hamilton Depression Rating Scale (HAM-D 17)
|
Health & Fitness | Open | |
|
Hamming Distance Calculator
|
Developer Tools | Open | |
|
Hamster Name Generator
|
Generators | Open | |
|
Hand Emoji List
|
Symbols & Unicode | Open | |
|
Hangul Romanizer
|
Language Tools | Open | |
|
Happy Hour Savings Calculator
|
Finance Tools | Open | |
|
Happy Number Checker
|
Math Calculators | Open | |
|
Hardiness Zone Finder
|
Gardening Tools | Open | |
|
Hardness Conversion Calculator
|
Science Tools | Open | |
|
Hardy Weinberg Calculator
|
Chemistry Tools | Open | |
|
Hardy-Weinberg Equilibrium Calculator
|
Biology Tools | Open | |
|
Harmonic Distortion THD Calculator
|
Electrical Tools | Open |
Showing 3,169–3,216 of 8,445 tools