UUtilWebPRO
ES·EN
25 free tools

Tools that just work

Calculators, converters and image & PDF tools that run entirely in your browser. No sign-up, nothing to install, and your data never leaves your device.

100% freeNo sign-upYour data stays privateWorks on mobile
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Calculators

Percentages, BMI, rule of three, discounts and more.

Percentage calculator

Find the % of a number, what % it is, and changes.

BMI calculator

Body mass index and reference range.

Rule of three

Direct and inverse rule of three, instantly.

Discount calculator

Final price after a discount and stacked discounts.

Finance

VAT, mortgages, compound interest and net salary.

VAT calculator

Add or remove VAT using the Spanish rates.

Mortgage calculator

Monthly payment and amortisation table.

Compound interest

Project your savings with regular contributions.

Spanish net salary

Estimate your net pay from the gross annual salary.

Documents

NIF, IBAN and numbers in words for your paperwork.

NIF / NIE letter

Work out and check the letter of a Spanish DNI/NIE.

IBAN validator

Validate an IBAN or work out its check digits.

Number to words

Spell out numbers in words, including money amounts.

Text

Count words and transform upper and lower case.

Word counter

Words, characters and reading time in real time.

Case converter

Change text to UPPERCASE, lowercase or Title Case.

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Date & time

Hours, ages, days between dates and a stopwatch.

Hours calculator

Add and subtract hours and minutes without errors.

Age calculator

Exact age and days between two dates.

Stopwatch & timer

Stopwatch with laps and countdown timer with alarm.

Images & PDF

Compress, convert and merge files without uploading them.

Compress image

Shrink your photos without leaving the browser.

Convert image

WebP to JPG, PNG to JPG, JPG to PNG or WebP…

Image to PDF

Turn one or several photos into a PDF.

Merge PDF

Combine several PDFs into one, without uploading them.

Generators

QR codes, secure passwords and random draws.

QR code generator

Create and download QR codes as PNG.

Password generator

Secure, random passwords in your browser.

Random picker

Pick winners at random from a list of names.

Converters

Units and Roman numerals in an instant.

Unit converter

Length, weight, temperature, volume and speed.

Roman numerals

Convert Arabic to Roman numerals and back.

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