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1,653 free online tools

Free tools for everyday jobs.

Calculators, converters, PDF tools, text utilities, developer tools and much more. No account needed. Always free.

Popular:Percentage CalculatorMerge PDFWord CounterPounds to KilogramsBMI Calculator

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Calculators97 toolsPercentage, discount, age and date difference.Finance57 toolsCompound interest, profit margin and ROI.Converters127 toolsPounds to kilograms, centimeters to inches and more.Text58 toolsCount, clean and transform your words.Developer70 toolsFormat JSON, decode a JWT and check the details.PDF and images29 toolsMerge PDFs and resize images.Health14 toolsBMI and other general estimates.Tools by country435 toolsTax, VAT and local rules for the US, UK, India and more.
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Percentage CalculatorCalculate a percentage of a value.Merge PDFCombine multiple PDF documents into one PDF in your browser.Pounds to KilogramsConvert pounds (lb) to kilograms (kg) using the exact international avoirdupois factor.Word CounterCount words, characters, sentences, paragraphs and estimated reading time. Text stays in your browser.BMI CalculatorCalculate body mass index from weight in kilograms or pounds and height in centimeters, inches or meters.JSON FormatterFormat and pretty-print valid JSON with two-space indentation.

Why use InovoTools?

Most used tools

Unit converters

Money and loans

Health and fitness

Maths and school

Everyday calculators

Developer and design

Text and randomisers

Every tool shows its working.

Each page lists the formula, a worked example and the limits of the result, so you can judge it before you rely on it. Inputs are processed in your browser unless a page says otherwise.

Read how we check tools

Questions about InovoTools

Are InovoTools free to use?

Yes. Every tool on InovoTools is free, with no account, sign-up or download. The site is published by Inovativex.

Are my files and text uploaded to a server?

No. Calculators, converters, text tools and the PDF and image tools run in your browser, so what you type or open stays on your device unless a tool page says otherwise.

How accurate are the calculators and converters?

Each tool page shows the formula it uses, worked examples and its limitations, so you can check a result by hand. Converters use exact published unit definitions, and calculations are covered by automated tests against hand-worked examples.

What kinds of tools are available?

1,653 tools across unit converters, everyday and finance calculators, word and character counters, JSON and other developer utilities, PDF merge and split, image resizing and compression, and health and maths calculators.

Can I rely on the tax, finance and health results?

Use them as estimates for planning and comparison. They are not financial, tax, legal or medical advice. Tax and payroll tools name the tax year and link to the official source they follow, so check the figures there before you file or pay.

Do I need to install anything?

No. The tools work in any modern browser on desktop or mobile.