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1634 tools
Pounds to Kilograms
Convert pounds (lb) to kilograms (kg) using the exact international avoirdupois factor.
Kilograms to Pounds
Convert kilograms (kg) to pounds (lb).
Centimeters to Inches
Convert centimeters to inches using the exact 2.54 cm per inch definition.
Inches to Centimeters
Convert inches to centimeters.
Word Counter
Count words, characters, sentences, paragraphs and estimated reading time. Text stays in your browser.
JSON Formatter
Format and pretty-print valid JSON with two-space indentation.
Percentage Calculator
Calculate a percentage of a value.
Age Calculator
Calculate completed years, months and days from a date of birth.
Compound Interest Calculator
Estimate compound growth from principal, annual rate, compounding frequency and duration.
Discount Calculator
Calculate savings and final price after a percentage discount.
Profit Margin Calculator
Calculate gross profit and profit margin from cost and revenue.
Date Difference Calculator
Find the elapsed number of calendar days between two dates.
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1634 listed. 634 eligible for search.
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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 toolsQuestions 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?
1,634 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.