All Free Tools
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 |
|---|---|---|---|
|
Lottery Number Generator
|
Generators | Open | |
|
Lottery Odds Calculator
|
Math Calculators | Open | |
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Loudness LUFS Calculator
|
Audio Tools | Open | |
|
Low-Pass Filter Calculator
|
Engineering Tools | Open | |
|
Lowercase Converter
|
Text Tools | Open | |
|
Lowercase Converter
|
Text Tools | Open | |
|
LTV to CAC Ratio Calculator
|
Finance Tools | Open | |
|
Luhn Number Generator
|
Generators | Open | |
|
Lumber Cost Calculator
|
Construction Tools | Open | |
|
Luminosity Distance Calculator
|
Astrophysics Tools | Open | |
|
Lump Sum Calculator
|
Finance Tools | Open | |
|
Lunar Phase By Date
|
Reference Tools | Open | |
|
Lung-RADS Score Helper
|
Health & Fitness | Open | |
|
Lutetium Electron Configuration
|
Chemistry Tools | Open | |
|
Lutetium Oxidation States
|
Chemistry Tools | Open | |
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Lux to Foot-candles Converter
|
Unit Converters | Open | |
|
Lux to Lumens Engineering Converter
|
Physics Tools | Open | |
|
Lux to Nox Converter
|
Unit Converters | Open | |
|
Lux to Phot Converter
|
Unit Converters | Open | |
|
m3/h to CFM Converter
|
Unit Converters | Open | |
|
m3/h to GPM Converter
|
Unit Converters | Open | |
|
M4A to AAC Audio Converter
|
Audio Tools | Open | |
|
M4A to AIFF Converter
|
Audio Tools | Open | |
|
M4A to FLAC Converter
|
Audio Tools | Open | |
|
M4A to MP3 Converter
|
Audio Tools | Open | |
|
M4A to OGG Converter
|
Audio Tools | Open | |
|
M4A to Opus Converter
|
Audio Tools | Open | |
|
M4A to WAV Converter
|
Audio Tools | Open | |
|
M4A to WMA Converter
|
Audio Tools | Open | |
|
M4V to AVI Converter
|
Video Tools | Open | |
|
M4V to FLV Converter
|
Video Tools | Open | |
|
M4V to GIF Converter
|
Video Tools | Open | |
|
M4V to MKV Converter
|
Video Tools | Open | |
|
M4V to MOV Converter
|
Video Tools | Open | |
|
M4V to MP4 Converter
|
Video Tools | Open | |
|
M4V to MPEG Converter
|
Video Tools | Open | |
|
M4V to WebM Converter
|
Video Tools | Open | |
|
M4V to WMV Converter
|
Video Tools | Open | |
|
MAC Address Formatter
|
Networking Tools | Open | |
|
MAC Address Generator
|
Networking Tools | Open | |
|
MAC Address OUI Lookup
|
Developer Tools | Open | |
|
MAC Anesthetic Helper
|
Anesthesia Tools | Open | |
|
Macaroni Cups to Grams
|
Food & Cooking | Open | |
|
Macaroni Grams to Cups Converter
|
Food & Cooking | Open | |
|
Macaulay Duration Calculator
|
Finance Tools | Open | |
|
Mach Number Calculator
|
Aviation Tools | Open | |
|
Mach Number Calculator
|
Physics Tools | Open | |
|
Mach to Feet per Second Converter
|
Unit Converters | Open |
Showing 4,321–4,368 of 8,451 tools