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The premium utility platform

Powerful Tools. Instant Results.

Premium calculators, converters and utilities designed to make everyday tasks faster, easier and more accurate.

Free to use
No registration
Privacy-friendly
Fast on every device

Popular tools

Loan EMI Calculator Work out the fixed monthly payment (EMI) for any loan amount, interest rate and term. Finance and Loans Mortgage Calculator Estimate your monthly mortgage payment including principal, interest, tax and insurance. Real Estate Percentage Calculator Solve everyday percentage problems — find a percent, a share or a change. Mathematics Age Calculator Find an exact age in years, months and days from a date of birth. Date and Time BMI Calculator Check your Body Mass Index and weight category in metric or imperial units. Health and Nutrition Unit Converter Convert length, weight, temperature, volume, area, speed and data units instantly. Unit Converters Word Counter Count words, characters, sentences and paragraphs with live reading time. Text and Writing JSON Formatter Format, validate and minify JSON with clear error reporting. Developer Tools

Browse by category

Finance and Loans Loan, EMI, interest and everyday money calculators. 10 tools Investment Plan returns, savings and long-term growth. 3 tools Business and Ecommerce Margins, pricing and store performance tools. 9 tools Real Estate Mortgage, affordability and property calculators. 5 tools Health and Nutrition BMI, calorie and wellbeing estimators. 2 tools Fitness Training, energy and body-metric tools. 1 tool Mathematics Percentages, averages and core math helpers. 11 tools Education Grades, GPA and study calculators. 2 tools Date and Time Age, durations and date arithmetic. 2 tools Unit Converters Convert length, weight, temperature and more. 1 tool Text and Writing Word counts, case changes and text cleanup. 7 tools Developer Tools Format, validate and encode for developers. 9 tools SEO and Website Tools Meta tags, previews and schema generators. 7 tools Image Tools Compress, resize and convert images privately. 1 tool Security and Privacy Passwords, hashes and privacy utilities. 3 tools Travel and Vehicle Fuel, distance and journey calculators. 1 tool Random Generators Pickers, dice, names and random data. 4 tools Productivity Everyday helpers to save you time. 3 tools Science and Engineering Technical and scientific calculators. 7 tools

Recently added

Home Affordability Calculator Estimate the home price you can afford from your income. Real Estate Down Payment Calculator Work out the down payment amount and loan needed. Real Estate Cap Rate Calculator Calculate the capitalization rate from NOI and value. Real Estate Rental Yield Calculator Calculate gross and net rental yield on a property. Real Estate Average Order Value Calculator Calculate the average value of each order. Business and Ecommerce Conversion Rate Calculator Calculate conversion rate from conversions and visitors. Business and Ecommerce CTR Calculator Calculate click-through rate from clicks and impressions. Business and Ecommerce CPM Calculator Solve CPM, cost or impressions — enter any two. Business and Ecommerce

Why choose Toolzio

Privacy-first

Calculations run in your browser. Your numbers, files and text never touch a server.

Lightning fast

Lean, dependency-free code means instant results on any connection or device.

Accurate & transparent

Every tool shows its formula, method and assumptions so you can trust the result.

Works everywhere

Mobile-first, accessible and keyboard-friendly — designed for users worldwide.

Frequently asked questions

Is Toolzio free to use?

Yes. Every tool is free, with no account or registration required.

Do my inputs get stored anywhere?

No. Tools process your data locally in your browser. We do not store private calculator values, text or files.

Do the tools work on mobile?

Absolutely. Toolzio is built mobile-first with large, finger-friendly controls and works fully without a mouse.

How accurate are the results?

Each tool shows the exact formula and assumptions it uses. Financial and health tools include estimates and disclaimers.