All Free Tools
7,704 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 |
|---|---|---|---|
|
.env to JSON Converter
|
Developer Tools | Open | |
|
.gitignore Combiner
|
Developer Tools | Open | |
|
.gitignore Generator
|
Developer Tools | Open | |
|
.htaccess Generator
|
Developer Tools | Open | |
|
.htaccess Redirect Builder
|
Developer Tools | Open | |
|
.htpasswd Generator
|
Developer Tools | Open | |
|
0 To 60 Calculator
|
Automotive Tools | Open | |
|
1:1 Aspect Ratio Calculator
|
Math Calculators | Open | |
|
1080P Resolution Reference
|
Reference Tools | Open | |
|
10k Pace Calculator
|
Sports Tools | Open | |
|
1440P Resolution Reference
|
Reference Tools | Open | |
|
16:10 Aspect Ratio Calculator
|
Math Calculators | Open | |
|
16:9 Aspect Ratio Calculator
|
Math Calculators | Open | |
|
1RM Calculator
|
Health & Fitness | Open | |
|
2:1 Aspect Ratio Calculator
|
Number Tools | Open | |
|
21:9 Aspect Ratio Calculator
|
Number Tools | Open | |
|
2FA Code Generator
|
Security & Privacy | Open | |
|
3:2 Aspect Ratio Calculator
|
Math Calculators | Open | |
|
32:9 Aspect Ratio Calculator
|
Reference Tools | Open | |
|
3D Cross Product Calculator
|
Math Calculators | Open | |
|
3D Dot Product Calculator
|
Math Calculators | Open | |
|
3D Print Cost Calculator
|
Home & DIY | Open | |
|
3D Print Filament Calculator
|
Engineering Tools | Open | |
|
3D Print Time Estimator
|
Home & DIY | Open | |
|
4:3 Aspect Ratio Calculator
|
Math Calculators | Open | |
|
401(k) Calculator
|
Finance Tools | Open | |
|
432 Hz Converter
|
Music Tools | Open | |
|
4K Resolution Reference
|
Reference Tools | Open | |
|
5:4 Aspect Ratio Calculator
|
Math Calculators | Open | |
|
5/3/1 Calculator
|
Fitness Tools | Open | |
|
500 Rule Astrophotography Calculator
|
Photography Tools | Open | |
|
555 Astable Calculator
|
Electrical Tools | Open | |
|
555 Monostable Calculator
|
Electrical Tools | Open | |
|
555 Timer Calculator
|
Electrical Tools | Open | |
|
5K Pace Calculator
|
Sports Tools | Open | |
|
720P Resolution Reference
|
Reference Tools | Open | |
|
8K Resolution Reference
|
Reference Tools | Open | |
|
9:16 Aspect Ratio Calculator
|
Number Tools | Open | |
|
A-a Gradient Calculator
|
Health & Fitness | Open | |
|
A-a Oxygen Gradient Calculator
|
Health & Fitness | Open | |
|
A-Weighting Calculator
|
Acoustics Tools | Open | |
|
A/B Test Sample Size Calculator
|
Marketing Tools | Open | |
|
A/B Test Statistical Significance Calculator
|
Marketing Tools | Open | |
|
AAC to AIFF Converter
|
Audio Tools | Open | |
|
AAC to FLAC Converter
|
Audio Tools | Open | |
|
AAC to M4A Converter
|
Audio Tools | Open | |
|
AAC to MP3 Converter
|
Audio Tools | Open | |
|
AAC to OGG Converter
|
Audio Tools | Open |
Showing 1–48 of 7,704 tools