ALTERED / THE TOOL LIBRARY
Free tools for everyday work.
Convert files, work with PDFs, and get the numbers right.
The collection
10 categories60 tools
Property Commission Calculator
Calculate estate agent commission from a property price and your agreed percentage.
Open toolPlot Price Calculator
Estimate a plot's total price from its area and price per marla, square foot or other unit.
Open toolMarla to Square Feet Converter
Convert marla to square feet using 272.25, 250 or 225 sq ft per marla. Choose the convention in your property records.
Open toolKanal to Marla Converter
Convert kanal to marla for land area comparisons, property listings and plot measurements.
Open toolRent Agreement Generator
Prepare a basic rent agreement draft with landlord, tenant, property, rent, deposit and term details.
Open toolSale Agreement Generator
Create a property sale agreement draft with buyer, seller, address, sale price and advance payment.
Open toolProperty Receipt Generator
Create a property payment receipt with payer, amount, property details and payment purpose.
Open toolInvoice Generator
Create an invoice with customer details, quantity, price and tax. Preview and download a customized PDF.
Open toolSalary Slip Generator
Prepare a salary slip showing basic pay, allowance, deductions and net salary in a downloadable PDF.
Open toolReceipt Generator
Generate a payment receipt with the payer, amount, purpose and date, then customize its PDF.
Open toolExpense Calculator
Add three expense amounts to check a small budget or compare your spending total.
Open toolProfit Margin Calculator
Calculate profit and gross margin from cost price and selling price.
Open toolGST Calculator
Calculate GST and a tax-inclusive total from an amount and a rate you choose.
Open toolDiscount Calculator
Work out the discount amount and final sale price from an original price and percentage off.
Open toolLoan EMI Calculator
Estimate monthly EMI, total repayment and interest for a fixed-rate reducing-balance loan.
Open toolPercentage Calculator
Find what percentage one number is of another. Enter a part and a whole for an instant result.
Open toolCGPA Calculator
Calculate credit-weighted CGPA from semester GPAs and semester credits on a 4, 5 or 10-point scale.
Open toolGPA Calculator
Calculate semester GPA from course grade points and credit hours using a selectable grading scale.
Open toolAggregate Calculator
Calculate an admission aggregate from academic and entry-test percentages with an adjustable academic weight.
Open toolMarks Percentage Calculator
Convert obtained marks and maximum marks into a percentage for exams, tests and assignments.
Open toolAge Calculator
Calculate completed years of age and elapsed days between a date of birth and a chosen date.
Open toolStudy Timetable Generator
Create a four-session study timetable for a subject or revision goal.
Open toolWhatsApp Link Generator
Create a click-to-chat WhatsApp link from an international phone number and optional message.
Open toolWhatsApp Message Link Generator
Make a WhatsApp chat link with a prefilled message for customers, events or support.
Open toolInstagram Bio Generator
Draft a short Instagram bio using your name and topic, ready to edit and copy.
Open toolCaption Generator
Create a short social caption draft around your topic, product or idea.
Open toolHashtag Generator
Turn topic words into a list of simple hashtags for a social post.
Open toolYouTube Title Generator
Draft a beginner-guide YouTube title from a video topic.
Open toolYouTube Description Generator
Create a video description outline with a topic introduction and learning points.
Open toolJPG to PDF
Convert JPG images to an A4 PDF. Combine multiple JPEG files with one image per page.
Open toolPNG to PDF
Convert PNG images into a PDF with one image per A4 page, without uploading your files.
Open toolPDF Merger
Merge multiple PDF files into a single downloadable document in their selected order.
Open toolPDF Splitter
Extract a consecutive page range from a PDF and save it as a separate document.
Open toolPDF Compressor
Optimize PDF structure and compare file sizes. Download a smaller result when object-stream optimization helps.
Open toolPDF Page Counter
Check how many pages a PDF contains without uploading it to a server.
Open toolImage Compressor
Compress JPG, PNG or WebP images to WebP with adjustable quality and a file-size comparison.
Open toolImage Resizer
Resize an image to a chosen width while keeping its original proportions. Preview and download a PNG.
Open toolImage to WebP
Convert a JPG, PNG or WebP image to WebP with a quality slider and downloadable preview.
Open toolWebP to PNG
Convert a WebP image to PNG while preserving its dimensions and supported transparency.
Open toolPassport Size Photo Maker
Crop a photo to a 413 x 531 pixel portrait with an adjustable vertical crop position.
Open toolWord Counter
Count words, characters and sentences in your text and estimate reading time.
Open toolCharacter Counter
Count characters, characters without spaces, words and lines for a text passage.
Open toolCase Converter
Convert text to uppercase, lowercase, title case and sentence case for copying.
Open toolRemove Extra Spaces
Clean repeated spaces, tabs and line breaks into a single-space text passage.
Open toolText Repeater
Repeat a text passage from 1 to 50 times with each repetition on a new line.
Open toolFancy Text Generator
Create bold-style Unicode, full-width and spaced text variations for copying.
Open toolJSON Formatter
Format and validate JSON with readable indentation and clear parse errors.
Open toolBase64 Encoder Decoder
Encode Unicode text to Base64 or decode Base64 into UTF-8 text.
Open toolURL Encoder Decoder
Encode a URL component or decode percent-encoded text for query values and links.
Open toolHTML Minifier
Reduce HTML whitespace with a parser while preserving comments, scripts and style contents.
Open toolCSS Minifier
Minify CSS using a CSS parser while keeping structural rewriting disabled.
Open toolJavaScript Minifier
Minify JavaScript with Terser while preserving variable names and keeping code compression disabled.
Open toolSquare Feet to Marla Converter
Convert square feet to marla using your local 272.25, 250 or 225 sq ft convention.
Open toolMarla to Kanal Converter
Convert marla to kanal using 20 marla per kanal, with a reverse conversion control.
Open toolSquare Meter to Square Feet Converter
Convert square meters to square feet using the international foot definition, with reverse conversion.
Open toolFeet to Meter Converter
Convert feet to meters using the exact factor 0.3048. Reverse the converter for meters to feet.
Open toolKG to Pound Converter
Convert kilograms to pounds using the international avoirdupois pound definition, with reverse conversion.
Open toolSimple Interest Calculator
Calculate simple interest and the final amount from principal, annual rate and time in years.
Open toolBMI Calculator
Calculate adult body mass index from weight in kilograms and height in centimeters.
Open toolDate Difference Calculator
Count elapsed days between two calendar dates for schedules, deadlines and planning.
Open toolUnderstand the numbers behind your result
Unit conversions use published measurement definitions. The adult BMI calculator references CDC categories. Land measurements include a choice of local marla conventions. Each guide explains its formula and assumptions.
Independent tools. Source references do not imply approval, affiliation or endorsement.