IConverter — every online converter in one place
IConverter is a set of 111 online tools for quick conversions: a currency converter using CBR exchange rates, ebooks between EPUB/PDF/MOBI/FB2, images, units (length, mass, area, volume, speed and more), Unix time, HEX/RGB color, Base64/URL/HTML encoding, JSON⇄YAML⇄CSV data formats, Markdown, generators for passwords/UUIDs/Lorem ipsum, and developer tools: XML⇄JSON, a SQL formatter, an IP calculator, an HTML/CSS/JS minifier, DNS lookup, and WHOIS. Everything runs right in your browser, with no sign-up and no data sent to third parties (except file conversion and DNS/WHOIS queries, which use our server).
Convert EPUB to PDF Online
Convert EPUB to PDF online for free.
Convert EPUB to MOBI Online
Convert EPUB to MOBI online for free — the format older Amazon Kindle models need since they don’t read EPUB directly.
Convert PDF to EPUB Online
Convert PDF to EPUB online for free — text becomes reflowable and adapts to your e-reader’s screen instead of staying locked to…
Convert FB2 to EPUB Online
Convert FB2 to EPUB online for free.
Convert MOBI to EPUB Online
Convert MOBI to EPUB online for free — a universal format read by PocketBook, Apple Books and most apps, unlike MOBI.
Convert WebP to JPG Online
Convert WebP to JPG online for free.
Convert PNG to JPG Online
Convert PNG to JPG online for free — shrink the file size and make it easier to share.
HEIC to JPG — Convert Online
Convert HEIC to JPG online for free.
Convert JPG to PNG Online
Convert JPG to PNG online for free.
Convert WebP to PNG Online
Convert WebP to PNG online for free while keeping transparency intact.
Convert SVG to PNG Online
Convert SVG to PNG online for free.
Convert SVG to JPG Online
Convert SVG to JPG online for free.
Resize Image
Resize an image online: set width and height in pixels or percent.
Crop Image
Crop an image online to exact dimensions: a square for Instagram, a banner, or an avatar.
Compress an Image
Compress JPG, PNG, GIF or WebP online without noticeable quality loss.
Apply a Filter to an Image
Apply a filter to a photo online: black & white, sepia, color inversion, blur or sharpen.
Add a Watermark to an Image
Add a watermark to an image online: text or a logo, with adjustable opacity and position.
Remove Background from an Image
Remove the background from a photo online automatically with AI — no Photoshop, no manual cutting out.
Create a Favicon from an Image
Create favicon.
Audio Converter
Convert audio between formats online: MP3, WAV, FLAC, AAC, OGG, M4A.
Extract Audio from Video
Extract audio from video (MP4 to MP3) online: MP3, WAV, AAC, M4A, OGG, FLAC.
Video Converter
Convert video between formats online: MP4, AVI, MOV, MKV, WebM.
Change Video Resolution
Change video resolution online: 4K, 1080p, 720p, 480p.
GIF from Video
Create an animated GIF from a clip of a video online.
Trim Audio
Cut a clip out of an audio file by start and end time online.
Trim Video
Cut a clip out of a video by start and end time online.
Merge PDF
Merge multiple PDF files into one online for free.
Word to PDF — Convert Online
Convert Word to PDF online for free: DOC, DOCX, ODT, RTF into PDF with formatting preserved.
PDF to Word — Convert Online
Convert PDF to an editable Word document (DOCX) online for free, preserving text and tables.
Compress PDF Online — Reduce File Size
Shrink your PDF file size online for free.
Image to PDF — Convert JPG, PNG to PDF Online
Convert an image to PDF online: JPG, PNG, HEIC, WebP and more, with the option to combine several pictures into one document.
PDF to JPG — Convert Pages Online
Convert PDF pages to JPG images online.
Extract Text from PDF (OCR) — Online
Recognize text in a PDF, including scanned pages, online for free — Russian and English.
PowerPoint to PDF — Convert Online
Convert a PowerPoint presentation (PPTX) to PDF online for free, for showing and sharing without losing the layout.
PowerPoint to JPG — Convert Online
Turn every slide of a PowerPoint presentation into a JPG online for free.
Image to PowerPoint — Convert Online
Place an image on a PowerPoint (PPTX) slide online for free — the picture is centered on the slide.
PDF to PowerPoint — Convert Online
Turn every PDF page into a PowerPoint (PPTX) slide online for free.
XLSX to CSV — Convert Online
Convert an Excel spreadsheet (XLSX) to CSV online for free — a simple text format for importing into other programs and databases.
CSV to XLSX — Convert Online
Turn a CSV file into a fully formatted Excel spreadsheet (XLSX) online for free.
XLSX to PDF — Convert Online
Convert an Excel spreadsheet (XLSX) to PDF online for free, for printing and sharing without losing the layout.
PDF to Excel — Convert Online
Extract a table from a PDF into Excel (XLSX) online for free.
PDF to CSV — Convert Online
Extract a table from a PDF into CSV online for free.
DOCX to ODT — Convert Online
Convert DOCX to ODT (the LibreOffice/OpenOffice OpenDocument format) online for free.
DOCX to RTF — Convert Online
Convert DOCX to RTF online for free — a format almost any text editor can open.
DOCX to TXT — Convert Online
Extract plain, unformatted text from a DOCX file into TXT online for free.
ODT to DOCX — Convert Online
Convert ODT to DOCX for Microsoft Word online for free.
ODT to RTF — Convert Online
Convert ODT to RTF online for free — a universal document-exchange format.
ODT to TXT — Convert Online
Extract plain, unformatted text from an ODT file into TXT online for free.
RTF to DOCX — Convert Online
Convert RTF to DOCX for Microsoft Word online for free.
RTF to ODT — Convert Online
Convert RTF to ODT (the LibreOffice/OpenOffice OpenDocument format) online for free.
RTF to TXT — Convert Online
Extract plain, unformatted text from an RTF file into TXT online for free.
TXT to DOCX — Convert Online
Turn a plain TXT text file into a Word document (DOCX) online for free.
TXT to ODT — Convert Online
Turn a plain TXT text file into an ODT (OpenDocument) document online for free.
TXT to RTF — Convert Online
Turn a plain TXT text file into an RTF document online for free.
Currency Converter
Convert currencies online using official CBR exchange rates: USD, EUR, GBP, CNY, JPY, CHF, KZT, UAH, TRY.
Cryptocurrency Converter
Convert cryptocurrencies online: Bitcoin, Ethereum, USDT, BNB, Solana, and 15 more coins — into rubles, dollars, euros, and oth…
Loan & Mortgage Calculator
Calculate your monthly loan or mortgage payment online: annuity and differential schemes, a full month-by-month payment schedul…
Convert Text Case Online
10 case styles in one tool: UPPERCASE, lowercase, Title Case, Sentence case, aLtErNaTiNg, iNVERTED, camelCase, snake_case, keba…
URL Slug Generator with Transliteration
Turn a title into a URL-friendly slug: lowercase, transliterate non-Latin text, replace spaces and special characters with hyph…
Character and Word Counter
Count characters (with and without spaces), words, sentences, lines, paragraphs, and reading time online.
Reverse Text
Reverse text online: by character, by word, or by line.
Remove Duplicate Lines
Remove duplicate lines from a list or block of text online.
Sort Lines
Sort the lines of a text block online, alphabetically or by numeric value, ascending or descending.
Remove Blank Lines
Remove or collapse blank lines in a block of text online.
Number the Lines of a Text
Add a sequential number to each line of text online.
Find & Replace in Text
Find and replace text online: plain mode (case-sensitive, whole-word-only) and a regular-expression mode with flags and capture…
Base64 — Encode and Decode Online
Encode or decode Base64 online.
URL Encode / Decode — Encode URLs Online
Encode or decode URL strings.
HTML Entities — Escape Characters Online
Escape or decode HTML entities: & < > " ', plus named entities ( — and more) and numeric charact…
Convert JSON to YAML and Back
Convert between JSON and YAML online in both directions.
Convert JSON to CSV and Back
Turn a JSON array of objects into a CSV table and back again.
Convert Markdown to HTML Online
Convert Markdown to HTML online with GitHub Flavored Markdown (GFM) support: tables, fenced code blocks, task lists.
Length Converter
Convert length between metric (mm, cm, m, km) and imperial (inch, foot, yard, mile) units.
Mass Converter
Convert mass between milligrams, grams, kilograms, tonnes, ounces, and pounds online.
Temperature Converter
Convert temperature between Celsius, Fahrenheit, and Kelvin online.
Time Unit Converter
Convert time between milliseconds, seconds, minutes, hours, days, and weeks online.
Area Converter
Convert area between square meters, hectares, square kilometers, acres, square feet, and square inches.
Volume Converter
Convert volume between milliliters, liters, cubic meters, gallons, quarts, pints, cups, and fluid ounces (US).
Speed Converter
Convert speed between kilometers per hour, meters per second, miles per hour, knots, and feet per second.
Pressure Converter
Convert pressure between pascals, kilopascals, bar, atmospheres, psi, and millimeters of mercury.
Power Converter
Convert power between watts, kilowatts, megawatts, horsepower, and BTU per hour.
Fuel Economy Converter
Convert fuel economy between liters per 100 km, kilometers per liter, and miles per gallon (US and UK).
Cooking Calculator
How many grams are in a cup of flour or sugar? Convert cups and spoons to grams by ingredient, adjust oven temperature, and res…
Number Base Converter — BIN, DEC, HEX
Convert numbers between binary, octal, decimal, hexadecimal, and base36.
Data Size Converter
Convert data size between bits, bytes, kilobytes, megabytes, gigabytes and terabytes instantly.
Unix Timestamp — Convert Time to Date
Convert a Unix timestamp to a date and back.
HEX / RGB Color Converter
Convert colors between HEX, RGB and HSL online with a live preview.
Date Calculator
Calculate the time between two dates: full years, months and days, plus total days, weeks and hours.
MD5, SHA-256 Hash Calculator Online
Compute MD5, SHA-1, SHA-256 and SHA-512 hashes of text online.
JWT Decoder — Decode a Token Online
Decode a JWT token online: header and payload in readable form, plus exp/iat dates.
Regex Tester
Test a regular expression online: matches, positions and capture groups update as you type.
Text Compare
Compare two blocks of text online and spot differences line by line: added and removed lines are highlighted.
Cron to Text
Decode a cron expression into plain English online.
Convert XML to JSON and Back
Convert between XML and JSON online in both directions.
SQL Formatter
Format a SQL query online: proper indentation and line breaks, choice of keyword case.
IP Calculator
Calculate the network address, broadcast address, subnet mask, host range and number of available addresses from an IP and CIDR…
Minify and Beautify HTML, CSS, JS
Minify or beautify HTML, CSS and JavaScript online.
DNS Lookup
Check a domain's DNS records online: A, AAAA, MX, TXT, NS and SOA.
WHOIS — Check a Domain
Look up a domain's registrar, registration and expiry dates, name servers and other WHOIS data online.
Calorie Calculator
Calculate your daily calorie needs and macronutrients based on sex, age, height, weight and activity level.
BMI Calculator
Calculate your body mass index (BMI) from height and weight online and find your category: underweight, normal, overweight.
Calories Burned by Activity
How many calories do walking, running, swimming, cycling and other activities burn? Calculate calories burned by weight and dur…
Clothing & Shoe Size Converter
Convert clothing and shoe sizes between RU, US, EU and UK for men, women and kids.
Frequently asked questions
Yes. All 111 tools are free, with no ads and no sign-up.
Text tools (case, base64, URL, JSON, Markdown, etc.) run entirely in your browser — data never leaves your device. File converters (ebooks and images) upload the file to our server, convert it via Calibre/ImageMagick, and delete the source immediately. DNS lookup and WHOIS run their query through our server, since browsers can't make those requests directly.
Yes, 25 MB per file for ebook and image conversion. That covers most use cases; for larger files, use a desktop app.
Yes. The interface is responsive, the sidebar collapses on narrow screens, and every tool works the same.
Yes, for file converters: POST /api/convert/ebook/ and POST /api/convert/images/ with multipart fields file and targetFormat. See the README on GitHub for details.