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DevToolKit
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A privacy-first workspace for everyday PDF, image, and developer tasks — with honest free limits and planned Pro and API tiers.

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Everyday Tools

Everyday tools that work instantly in your browser

Count words, convert units, calculate age, compare time zones, and download YouTube thumbnails — free, fast, and local-first.

Count wordsConvert units
Age calculatorTime zonesYouTube thumbnails·Browse all general tools
5 everyday toolsInstant resultsBrowser-firstNo signup

Quick task preview

No signupInstant resultsBrowser-first
  1. 1

    Writing

    Paste textCount wordsCopy stats
  2. 2

    Convert

    Pick unitsEnter valueGet result
  3. 3

    Schedule

    Pick citiesSet timeCompare zones

Start with a common task

Jump straight into the tool you need — no files to upload, no waiting.

No upload needed
Word CounterEssays & SEOUnit ConverterTravel & cookingTime Zone ConverterMeetingsAge CalculatorForms & milestonesYouTube ThumbnailsContent research

Choose your everyday workflow

Pick a use case — each opens the right tool instantly.

Writing & SEO

Check word limits, characters, and reading time before you publish.

Paste textCount wordsCopy stats

Travel & units

Switch between miles, kilograms, Celsius, and more without a calculator.

Pick unitsEnter valueGet result

Meetings & time zones

Plan calls across cities and compare local times instantly.

Pick citiesSet timeCompare zones

Content & thumbnails

Preview and download public YouTube thumbnail sizes for research.

Paste URLPreview sizesDownload
Writing & textConvertersMedia

Writing & text

Count words, characters, sentences, and estimated reading time.

1 tool
PopularInstant

Word Counter

Count words, characters, sentences, and reading time instantly.

Open tool

Converters & calculators

Convert measurements, time zones, and calculate exact age.

3 tools
PopularInstant

Unit Converter

Convert length, weight, temperature, area, volume, and speed.

Open tool
Instant

Time Zone Converter

Compare and convert times between world cities and regions.

Open tool
Instant

Age Calculator

Calculate exact age, next birthday, and total days lived.

Open tool

Media & downloads

Fetch public YouTube thumbnail images in multiple sizes.

1 tool
Instant

YouTube Thumbnail Downloader

Get YouTube thumbnail images in multiple sizes from a video URL.

Open tool

Not sure where to start?

Jump to popular tools or follow a recommended writing workflow.

Most used general tools

  • Word CounterWriting & SEOInstant
  • Unit ConverterMeasurementsInstant
  • Time Zone ConverterRemote teamsInstant
  • Age CalculatorForms & recordsInstant

Best for

Essays and word limitsTravel and unit conversionsMeeting scheduling across zonesAge and birthday calculationsYouTube thumbnail research

Recommended next workflow

The fastest path for essays, SEO drafts, and social captions.

Paste textCount wordsCopy stats

Paste text → Count stats → Copy results

Start workflow

How these tools run

Browser-local

Text and math run on your device.

Instant

No upload wait for everyday tools.

No AI required

Focused utilities without complexity.

5 tools·5 instant·No signup required

How to choose the right tool

Students, writers, and everyday users who need word counts, converters, calculators, and lightweight text utilities without installing apps.

Match your everyday task to the fastest utility.

  • Check word or character countWord Counter
  • Convert miles, kg, or °CUnit Converter
  • Compare meeting timesTime Zone Converter
  • Calculate exact ageAge Calculator
  • Download YouTube thumbnailsThumbnail Downloader

Related guides

  • Useful developer tools every browser should have

FAQ

Quick answers about speed, privacy, and accounts.

Do general tools need uploads?

Most everyday utilities run on text or numbers you type in — no file upload required for word counts, conversions, or calculations.

Do these tools run locally?

Yes. Word counting, unit conversion, age calculation, and time zone comparison typically run entirely in your browser.

Is an account required?

No signup is needed. Open a tool, get your result, and move on.

Does DevToolKit use AI for general tools?

No. These utilities stay simple and fast — no AI required for everyday tasks.

Built for speed and simplicity

Everyday utilities should feel instant — no accounts, no uploads, no complexity.

Runs in your browser

Most general tools process input locally — nothing to upload for basic text and calculations.

No account needed

Open a tool, get your result, and move on. No signup wall for everyday utilities.

Simple by design

No AI required. These tools stay fast, focused, and easy to understand.

Coming soon

Everyday utilities roadmap

More quick tools without slowing down the essentials.

  • Saved conversion presets
  • Meeting time planner
  • Reading level estimates
  • Batch unit conversions
  • Offline/PWA support
Join early accessTry Word Counter

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5 everyday tools·Privacy & trust