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Text tools, unit converters, color tools, number calculators, financial tools and more — free forever, no account needed, works in your browser.
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Popular tools
Jump straight to the most-used tools.
Word Counter
Live word, character, sentence and reading time counter. Keyword density included.
°C to °F Converter
Convert Celsius to Fahrenheit instantly with a full reference table.
Percentage Calculator
Find X% of Y, what % X is of Y, and percentage increase or decrease.
Case Converter
UPPERCASE, lowercase, Title Case, camelCase, snake_case and 8 more.
Miles to Kilometres
Convert miles to km with a handy reference table for common distances.
Password Generator
Strong random passwords or memorable passphrases. Nothing is sent online.
HEX to RGB
Convert any HEX color to RGB, HSL and CMYK with live preview and tints.
Kg to Lbs
Convert kilograms to pounds. Includes a full conversion table.
Random Picker
Pick random items from any list. Multi-pick mode, no-repeats, history log.
Find & Replace
Find and replace text with regex support and live match count.
Roman Numerals
Convert numbers to Roman numerals or Roman numerals to numbers.
Palette Generator
Complementary, triadic and analogous palettes from any base color.
1,300+ Unit Converters
Every major unit conversion — instant, accurate and free.
X vs Y — Decision Guides
Side-by-side comparisons — when to use each, what the difference is, and why it matters. 74 guides across units, tech, cooking, finance and more.
All 74 comparison guides →Coming soon
More categories in development — building towards 1,000+ tools.
Need a calculator?
Our sister site 247Calculators.com has 353+ free calculators — health, finance, cooking, home improvement and more. Free, no sign-up.
Visit 247Calculators.com →Why 247QuickTools is free, and how it stays that way
No account, no paywall, no usage limits
Every converter, generator, and calculator on this site runs entirely in your browser using JavaScript — there's no server processing your input and no account gate blocking repeated use. You can convert the same value a thousand times a day without hitting a limit, because the computation happens on your own device, not on ours.
Supported by affiliate links, not subscriptions
247QuickTools is part of the Amazon Associates programme and earns a small commission on qualifying purchases made through some links, alongside standard display advertising. This funding model means the tools themselves stay genuinely free rather than moving to a "freemium" model with locked features behind a paywall.
Reviewed against primary reference sources
Conversion factors and calculation logic are checked against published standards — ISO definitions, official government conversion tables, and internationally recognized constants (like the exact 25.4mm-per-inch definition of the inch) — rather than copied from other converter sites, which reduces the risk of compounding errors that can spread across the web.
Frequently asked questions
Is 247QuickTools really free to use?
Yes. Every tool is free with no sign-up, no account, and no usage limits. The site is supported by affiliate links and display advertising rather than subscriptions.
Do I need to create an account or install anything?
No account, download, or browser extension is required. Every tool runs directly in your browser, so results appear instantly and nothing you enter is sent to a server or stored.
How accurate are the unit conversions and calculators?
Conversion factors are checked against published reference data — ISO standards, official government conversion tables, and internationally recognized definitions. Where a figure is rounded or approximate, the tool notes this.
Who builds and maintains 247QuickTools?
247QuickTools is built and maintained by a UK-based qualified primary teacher and FA Level 2 football coach as part of a wider network of free utility and information sites.
Can I use 247QuickTools on my phone?
Yes — every tool works on mobile browsers as well as desktop, with no app install required. Because tools run entirely in the browser, they continue working offline once a page has loaded.
What's the difference between 247QuickTools and 247Calculators?
247QuickTools focuses on unit converters, text tools, generators, and everyday utilities, while sister site 247Calculators.com specializes in more complex health, finance, cooking, and home-improvement calculators.