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8,456 free online tools across 85 categories
No sign-up and nothing to install. Most tools process input in your browser; tools that need live data or another network service should explain it clearly. 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 |
|---|---|---|---|
|
53 Minute Timer
|
Date & Time | Open | |
|
54 Minute Timer
|
Date & Time | Open | |
|
55 Minute Timer
|
Date & Time | Open | |
|
555 Astable Calculator
|
Electrical Tools | Open | |
|
555 Monostable Calculator
|
Electrical Tools | Open | |
|
555 Timer Calculator
|
Electrical Tools | Open | |
|
56 Minute Timer
|
Date & Time | Open | |
|
57 Minute Timer
|
Date & Time | Open | |
|
58 Minute Timer
|
Date & Time | Open | |
|
59 Minute Timer
|
Date & Time | Open | |
|
5K Pace Calculator
|
Sports Tools | Open | |
|
6 Hour Timer
|
Date & Time | Open | |
|
6 Minute Timer
|
Date & Time | Open | |
|
60 Minute Timer
|
Date & Time | Open | |
|
7 Hour Timer
|
Date & Time | Open | |
|
7 Minute Timer
|
Date & Time | Open | |
|
720P Resolution Reference
|
Reference Tools | Open | |
|
75 Minute Timer
|
Date & Time | Open | |
|
8 Hour Timer
|
Date & Time | Open | |
|
8 Minute Timer
|
Date & Time | Open | |
|
8K Resolution Reference
|
Reference Tools | Open | |
|
9 Hour Timer
|
Date & Time | Open | |
|
9 Minute Timer
|
Date & Time | Open | |
|
9:16 Aspect Ratio Calculator
|
Number Tools | Open | |
|
90 Minute Timer
|
Date & Time | Open | |
|
90 Second Timer
|
Date & Time | 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 | |
|
AAC to Opus Converter
|
Audio Tools | Open | |
|
AAC to WAV Converter
|
Audio Tools | Open | |
|
AAC to WMA Audio Converter
|
Audio Tools | Open | |
|
Aadhaar Photo Resizer
|
Image Tools | Open | |
|
Abbreviation Expander
|
Language Tools | Open | |
|
ABCD2 TIA Risk Score Calculator
|
Health & Fitness | Open | |
|
ABCD2 TIA Score Calculator
|
Health & Fitness | Open | |
|
ABCDE Mole Check Helper
|
Health & Fitness | Open | |
|
Absolute Humidity Calculator
|
Weather Tools | Open | |
|
Absolute Magnitude Calculator
|
Astrophysics Tools | Open | |
|
Absolute Neutrophil Count (ANC) Chemo Helper
|
Health & Fitness | Open | |
|
Absolute Value Calculator
|
Math Calculators | Open |
Showing 97–144 of 8,456 tools