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Utilboxes

Free tools for work, school and everyday life

Convert files, calculate anything, and tidy up text — right in your browser. Fast, private, and free, with nothing to install and no account to create.

Files never leave your deviceNo sign-up required73 tools and counting

Popular tools

The ones people reach for most often.

View all 73 tools
Merge PDFCombine several PDFs into one file, in the order you choose.PDF Tools
Split PDFBreak a PDF into separate files by page range or one file per page.PDF Tools
Compress PDFShrink a PDF by re-encoding the images inside it.PDF Tools
PDF to WordPull the text out of a PDF into an editable .docx document.PDF Tools
PDF to JPGRender every page of a PDF as a JPG image.PDF Tools
JPG to PDFPut your photos into a single PDF, one image per page.PDF Tools
Percentage CalculatorWork out percentages, increases, decreases and 'what percent of'.Calculators
Age CalculatorFind an exact age in years, months, days — and the next birthday.Calculators
EMI CalculatorMonthly instalment, total interest and a full repayment schedule.Calculators
BMI CalculatorBody mass index in metric or imperial, with the healthy weight range.Calculators
Scientific CalculatorTrigonometry, logs, powers and parentheses with a full history.Calculators
Compress ImageCut image file size with a live before-and-after preview.Image Tools
Resize ImageChange dimensions by pixels or percentage, aspect ratio locked.Image Tools
PNG to JPGConvert PNG to JPG with a background colour for transparency.Image Tools
HEIC to JPGConvert iPhone HEIC photos into universally readable JPGs.Image Tools
Image to Text (OCR)Read the words out of a screenshot or photo of a document.Image Tools
Currency ConverterConvert between 30+ currencies using daily reference rates.Converters
Weight ConverterKilograms, pounds, stones, ounces and grams.Converters
Temperature ConverterCelsius, Fahrenheit, Kelvin and Rankine, side by side.Converters
QR Code GeneratorQR codes for links, text, email, phone, SMS and Wi-Fi.Generators
Password GeneratorStrong random passwords and passphrases with a strength estimate.Generators
Invoice GeneratorBuild a professional invoice and export it as a real PDF.Generators
Word CounterLive word, character, sentence and reading-time counts.Text Tools
Case ConverterUPPER, lower, Title, Sentence, camelCase, snake_case and more.Text Tools
JSON FormatterPretty-print or minify JSON, with the exact error position.Developer Tools
Base64 EncoderEncode text or a file to Base64, standard or URL-safe.Developer Tools
Timestamp ConverterUnix time to a readable date, in UTC and your local zone.Developer Tools

Why use these tools

Your files stay on your device

PDF, image and text tools all run inside your browser. There is no upload, no queue, and no copy of your document on a server afterwards.

Fast, because nothing travels

Work starts the moment you drop a file in. A 40-page PDF merges in about a second, with no round trip to wait for.

Free, with no account

No sign-up, no email step, no watermark and no daily limit. Open a tool, use it, close the tab.

PDF Tools

Merge, split, rotate, compress and convert PDF files.

View all 13
Merge PDFCombine several PDFs into one file, in the order you choose.Split PDFBreak a PDF into separate files by page range or one file per page.Compress PDFShrink a PDF by re-encoding the images inside it.PDF to WordPull the text out of a PDF into an editable .docx document.Word to PDFTurn a .docx document into a clean, shareable PDF.PDF to JPGRender every page of a PDF as a JPG image.

Calculators

Everyday maths for money, study, health and time.

View all 15
Percentage CalculatorWork out percentages, increases, decreases and 'what percent of'.Age CalculatorFind an exact age in years, months, days — and the next birthday.GPA CalculatorAdd your courses and credits to get a weighted grade point average.CGPA CalculatorCombine several semesters into one cumulative grade average.Grade CalculatorTurn marks into a percentage and a letter grade.Attendance CalculatorSee your attendance percentage and how many classes you still need.

Image Tools

Compress, resize, crop and convert images.

View all 11
Compress ImageCut image file size with a live before-and-after preview.Resize ImageChange dimensions by pixels or percentage, aspect ratio locked.JPG to PNGConvert JPG photos to lossless PNG files.PNG to JPGConvert PNG to JPG with a background colour for transparency.WebP to JPGTurn WebP images into JPGs that any app can open.HEIC to JPGConvert iPhone HEIC photos into universally readable JPGs.

Converters

Units, measurements and currency, converted instantly.

View all 9
Currency ConverterConvert between 30+ currencies using daily reference rates.Length ConverterMetres, feet, inches, miles and eleven other length units.Weight ConverterKilograms, pounds, stones, ounces and grams.Temperature ConverterCelsius, Fahrenheit, Kelvin and Rankine, side by side.Time ConverterSeconds to years, and everything in between.Speed Converterkm/h, mph, knots, m/s and the speed of sound.

Generators

QR codes, passwords, invoices, resumes and test data.

View all 8
QR Code GeneratorQR codes for links, text, email, phone, SMS and Wi-Fi.Barcode GeneratorCODE128, EAN-13, UPC-A and other retail barcode formats.Password GeneratorStrong random passwords and passphrases with a strength estimate.Random Number GeneratorPick numbers in a range, with or without repeats.Invoice GeneratorBuild a professional invoice and export it as a real PDF.Resume GeneratorFill in your details and download a clean one-page CV.

Text Tools

Count, clean, sort and reshape blocks of text.

View all 7
Word CounterLive word, character, sentence and reading-time counts.Character CounterCount characters against Twitter, SMS and meta-tag limits.Case ConverterUPPER, lower, Title, Sentence, camelCase, snake_case and more.Remove Duplicate LinesStrip repeated lines and see exactly how many were removed.Sort LinesAlphabetical, numeric, length or random line ordering.Text ReverserReverse characters, words or the order of the lines.

Developer Tools

Format, validate and encode the data you work with.

View all 10
JSON FormatterPretty-print or minify JSON, with the exact error position.JSON ValidatorCheck JSON syntax and get a plain-English explanation of errors.JSON to CSVFlatten nested JSON into a spreadsheet-ready CSV.Base64 EncoderEncode text or a file to Base64, standard or URL-safe.Base64 DecoderDecode Base64 back to text or download it as a file.URL EncoderPercent-encode a whole URL or a single query parameter.

Recently added

All 73 tools launched together on September 5, 2026.

Merge PDFCombine several PDFs into one file, in the order you choose.PDF Tools
Split PDFBreak a PDF into separate files by page range or one file per page.PDF Tools
Compress PDFShrink a PDF by re-encoding the images inside it.PDF Tools
PDF to WordPull the text out of a PDF into an editable .docx document.PDF Tools
Word to PDFTurn a .docx document into a clean, shareable PDF.PDF Tools
PDF to JPGRender every page of a PDF as a JPG image.PDF Tools

One place for the small digital jobs

Most days throw up a task that is too small to justify installing software: a PDF that needs two pages removed, a photo that is a megabyte too large to attach, a percentage you could work out by hand but would rather not. Utilboxes collects 73 of those jobs into one place, with a single consistent interface.

Nearly all of them run entirely inside your browser. That is not a marketing line — it is a design decision with real consequences: your files are never uploaded, so there is no queue to wait in, no size limit imposed by a server, and nothing left behind when you close the tab. The two exceptions are stated plainly on the tools themselves.

Each tool also explains what it did. Calculators show their formula and working; converters name the exact factors they used; file tools say what survives the conversion and what does not. You should be able to check the result rather than take it on trust.