PDF converters, image editors, finance calculators, developer utilities, unit converters & more — 100% private, client-side, and free forever.
High-precision conversion, table extraction, merging & splitting
Convert checklists, statements & tables to styled Excel sheets with 5-column detection, yellow highlight fills, and live preview.
Popular 🔥Convert PDF documents to genuine editable Word files with table structure preservation and optional OCR support.
Popular 🔥Upload .docx document, view preview, and save privately as PDF via browser print.
PDFCombine multiple PDF files into one single PDF document privately in the browser.
Popular 🔥Extract custom page ranges or separate all pages into individual PDF files.
PDFExtract each PDF page as high-resolution JPG or PNG image files.
PDFConvert JPG, PNG, and WebP images to PDF. Merge multiple photos into one PDF.
PDFCompress, resize, convert & edit images with browser AI
Reduce JPG, PNG & WebP file size with quality control and before/after preview.
Popular 🔥Convert between JPG, PNG, WebP, AVIF and BMP in real-time.
ImageConvert iOS HEIC and HEIF photos to high-quality JPG or PNG images client-side.
ImageResize by pixels or percentage with aspect ratio lock.
ImageRemove backgrounds using in-browser AI. No server, 100% private.
AIExtract text from photos. Supports English, Sinhala, Tamil & 100+ languages.
OCRStrip GPS location, camera model and EXIF data before sharing.
PrivacyYouTube, Facebook, Instagram sizes with text overlay and center crop.
ImageSri Lanka specific tax, loan & salary calculators
Convert LKR to USD, EUR, GBP and 15+ global currencies with real-time updates.
Popular 🔥Convert amounts to words for cheque writing. LKR with crores & lakhs. 🎤 Voice input.
Finance 🇱🇰Calculate monthly repayments and interest breakdown for any loan.
Finance 🇱🇰Net take-home pay after PAYE tax and EPF/ETF deductions.
Finance 🇱🇰Calculate employer and employee EPF/ETF contributions under Sri Lanka labor law.
Finance 🇱🇰Calculate end-of-service gratuity payout under Sri Lanka statutory guidelines.
Finance 🇱🇰Create professional invoices, receipts & quotations. Download as PDF. Free forever.
Finance 🇱🇰Calculate mutual fund returns and wealth compounding milestones for Systematic Investment Plans.
FinanceUtilities for developers, designers & webmasters
Compare text & code side-by-side or inline to spot exact additions and deletions.
DeveloperTest regular expressions with real-time match highlighting, flags and capture groups.
DeveloperMinify code to reduce file size. Shows exact percentage saved.
DeveloperFormat and beautify SQL queries with keyword casing and indentation control.
DeveloperHEX ↔ RGB ↔ HSL ↔ CMYK real-time. Color picker, shades, CSS variables.
DeveloperGenerate UUID v4 and SHA-256/512 hashes. Also includes random string generator.
DeveloperPrettify, validate, and minify JSON data instantly.
DeveloperEncode text to Base64 or decode Base64 strings back to text.
DeveloperTest password complexity, calculate entropy, estimate crack time, and generate secure keys.
DeveloperEncoding, OCR, Voice Typing & Singlish to Sinhala font conversion
Continuous voice typing notepad, punctuation commands, Sinhala, Tamil, English dictation & export.
AI / Voice 🎙️Type Sinhala using English phonetics (Singlish). Convert Unicode ↔ FM Abhaya/Malithi. Fancy text styles.
Sinhala 🇱🇰Scan your resume against a job description for ATS formatting, headers, and keyword matches.
OCR / TextSentence case, UPPER, lower, Title Case, aLtErNaTiNg, InVeRsE and more. Find & Replace included.
TextConvert Text↔Binary, Text↔ASCII, URL Encode/Decode, and Text↔Hex.
EncodingTargeted base converters — Decimal, Binary, Hex, Octal
Real-time 4-way converter: Dec ↔ Bin ↔ Hex ↔ Oct simultaneously.
Popular 🔥Convert base 10 to binary with step-by-step division shown.
NumberConvert binary to decimal with bit position visualization.
NumberConvert base 10 to hex (A–F) with working shown.
NumberConvert hex (base 16) to decimal with positional weight steps.
NumberGroup 4 bits → 1 hex digit with visual group breakdown.
NumberExpand each hex digit to 4 bits with side-by-side view.
NumberDivide by 8 method with step-by-step. Includes chmod use cases.
NumberPositional weight method. Great for Linux permission analysis.
NumberGroup 3 bits at a time. Visualized with color-coded groups.
NumberExpand each octal digit to 3 bits. chmod 755 → binary explained.
NumberLength, Weight, Temperature, Distance & Speed
6-tab unit converter: Length, Weight, Temp, Speed, Area, Volume.
Popular 🔥Convert centimeters to inches. Also shows feet & inches format.
LengthConvert inches to cm. Supports feet+inches combo for height.
LengthConvert kilograms to pounds. Also shows stone for UK users.
WeightConvert lbs to kilograms with gram output. Common weight table included.
WeightShows °C, °F and Kelvin simultaneously. Mental math trick included.
TemperatureConvert °F to °C and Kelvin. Common temperature reference table.
TemperatureConverts distance and km/h to mph simultaneously.
DistanceConvert miles to km. Marathon, race distance benchmarks included.
DistanceEveryday tools, calculators & time converters
Generate QR codes for URLs, Wi-Fi, vCard, SMS, Email and more.
UtilityCalculate Body Mass Index and find your health category.
HealthFind exact age in years, months and days. Birthday countdown.
Utility3-in-1: % of a number, what % is X of Y, percentage change.
MathConvert international city times and plan global meetings across time zones.
UtilityAverage, ratio simplifier, random number generator, prime checker.
MathFreeOnlineTool.lk is a comprehensive collection of 63 free digital utilities designed to make your daily tasks faster, easier, and more secure. Built specifically with Sri Lankan and global users in mind, our platform provides essential PDF converters, image editors, voice typing note utilities, and finance calculators (such as the EPF/ETF calculator, Gratuity, and salary tax calculators), alongside developer tools, number converters, and daily utilities.
Unlike many other tool directories on the web, FreeOnlineTool.lk is fully committed to user privacy, speed, and absolute zero cost. Here is what sets our platform apart:
Our tools are neatly categorized to help you find exactly what you need:
Convert PDF to Excel (.xlsx) and Word (.docx), merge files, split pages, and extract images safely.
Compress images, convert formats, convert HEIC to JPG, remove backgrounds, and clear EXIF metadata.
Calculate LKR loans, EPF/ETF, Gratuity, convert currency, and write cheques easily with our Numbers to Words generator.
Diffchecker, Regex tester, Minifier, SQL formatter, Base converters (Binary, Hex, Octal), and Unit converters.