Tools & Calculators Directory
High-precision financial models, developer encoders, PDF utilities, and image tools. Every calculation runs entirely in your browser memory with zero server uploads and instant Excel exports.
Financial Calculators
Mortgage PITI & amortization schedules, auto financing, retirement 401(k) accumulation, inflation, and compound interest models.
Explore CategoryData & Developer Tools
JSON formatters, Base64 encoders, JWT inspectors, UUID generators, Unix timestamp converters, and byte storage calculators.
Explore CategoryDaily Utilities & PDF
PDF merge, split, page numbering, table extraction, image conversions (WebP, PNG, SVG), age calculation, and unit converters.
Explore CategoryBase64 Encoder & Decoder
Encode plain text or binary data into Base64 format, or decode Base64 strings back to text directly in your browser.
JSON Formatter & Validator
Format, beautify, minify, and validate JSON payloads with accurate syntax error highlighting and tree structure viewing.
URL Encoder & Decoder
Safely encode special characters for query parameters or decode percent-encoded URLs back to human-readable strings.
Cryptographic Hash Generator
Generate secure cryptographic message digests and checksums for strings and passwords using native Web Crypto APIs.
Unix Timestamp Converter
Instant bidirectional conversion between Unix epoch timestamps (seconds & milliseconds) and human dates. Includes Linux bash commands & ISO 8601 formatting.
Color Code Converter (HEX, RGB, HSL)
Convert color formats between HEX, RGB, RGBA, and HSL with live visual swatch preview and CSS snippet generators.
SIP Calculator
Calculate expected future returns on your monthly Systematic Investment Plan (SIP) investments with compound interest growth projections.
EMI Calculator
Calculate your monthly Equated Monthly Installment (EMI), total interest payable, and overall loan repayment schedule for home, car, and personal loans.
Compound Interest Calculator
Forecast exponential savings growth with customizable compounding intervals (annual, quarterly, monthly, daily) and regular deposits.
GST Calculator
Calculate Goods and Services Tax (GST) effortlessly. Add or remove tax with standard slabs (5%, 12%, 18%, 28%) or custom rates.
Percentage Calculator
Solve all percentage math instantly: calculate what is X% of Y, what percent X is of Y, percentage increase/decrease, discounts, and sales tax.
Discount & Sale Price Calculator
Calculate final sale prices, dollar savings, and stacked coupon discounts during shopping sales and wholesale purchases.
Chronological Age Calculator
Calculate your exact chronological age from your date of birth down to the minute, with upcoming birthday countdowns and milestones.
Date Difference & Duration Calculator
Calculate the exact number of days, weeks, months, and working business days between any two calendar dates.
BMI Calculator (Body Mass Index)
Calculate your Body Mass Index (BMI) using metric (kg/cm) or imperial (lbs/feet) measurements with WHO classification charts.
Universal Unit Converter
Instantly convert between metric and imperial units across length, mass, temperature, area, volume, speed, and time.
Tip & Bill Splitter Calculator
Calculate restaurant tips, service charges, and split bill totals evenly among friends or colleagues with custom tip percentages.
Data Size & Byte Converter
Convert digital storage units between Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, and Petabytes using Binary or Decimal standards.
Salary & Take-Home Paycheck Calculator
Calculate net monthly take-home pay after taxes, retirement (401k / EPF), and deductions for US (Federal/FICA) and India (FY 2024-25).
Income Tax Slab Calculator
Calculate your exact income tax liability across progressive US Federal brackets (Single / Married) and Indian Income Tax slabs (New Regime FY 2024-25 / FY 2025-26).
JWT Token Inspector & Decoder
Decode and inspect JSON Web Tokens (JWT) headers, claims, issued timestamps, and expiration status with 100% client-side privacy.
UUID / GUID v4 Batch Generator
Generate cryptographically secure random Universally Unique Identifiers (UUID v4 / GUID) individually or in bulk with custom formats.
Profit Margin & Markup Calculator
Calculate gross profit margin percentage, markup percentage, cost of goods, and selling price for retail and wholesale business.
Return on Investment (ROI) Calculator
Calculate simple and annualized Return on Investment (ROI) percentage and total capital gains across business ventures and stocks.
WebP to PNG Converter
Batch convert Google WebP images to high-resolution transparent PNG files directly in your web browser with zero server uploads and zero cloud queues.
PNG to WebP Converter
Convert PNG images to next-gen WebP format with configurable compression and transparency support to speed up website load times.
JPEG to PNG Converter
Convert JPG and JPEG photos to uncompressed PNG format for clean editing, overlaying, and graphics design.
Image Resizer & Compressor
Compress and resize WebP, PNG, and JPEG images to exact pixel widths and target file sizes directly in browser memory.
Bulk Image Compressor
Compress up to 50 JPEG, PNG, and WebP images simultaneously in your browser. Slash file sizes up to 90% with zero server uploads and 100% privacy.
JPEG & JPG Compressor
Shrink bulky JPEG and JPG photographs with smart quantization while preserving visual clarity.
PNG Compressor
Reduce transparent PNG file size without loss of background transparency or graphics quality.
WebP Compressor
Optimize next-generation WebP images to supercharge Google Core Web Vitals and LCP scores.
SVG to PNG Rasterizer
Render scalable vector graphics (SVG) into crisp transparent PNG images at any custom resolution up to 4K.
Free Image Resizer
Resize photos, graphics, and social media banners to exact pixel dimensions with lockable aspect ratio and 100% in-browser privacy.
Merge PDF Online
Combine multiple PDF documents into a single organized PDF file in seconds directly in your web browser.
Split PDF & Extract Pages
Separate specific pages or custom page ranges from any PDF document quickly and securely in your browser.
Watermark PDF Online
Protect your intellectual property by stamping custom text watermarks like CONFIDENTIAL or DRAFT onto every PDF page.
Add Page Numbers to PDF
Stamp clean, professional page numbering onto every page of your PDF documents with customizable position and format.
PDF Table & Text Extractor to Excel
Parse structured text and tables from PDF documents and export directly to clean Excel (.xlsx) or CSV spreadsheets.
Compress PDF Online
Shrink PDF documents by up to 80% directly in your browser. 100% private, zero server uploads, and instant ZIP download for bulk files.
Mortgage Calculator & Amortization Schedule
Calculate monthly payments with principal, interest, property taxes, home insurance, and PMI. Export complete month-by-month amortization schedules directly to Excel (.xlsx).
Auto & Car Loan Calculator
Calculate monthly auto loan payments factoring in vehicle purchase price, dealer documentation fees, sales tax, trade-in equity, and down payment.
Retirement & 401(k) Nest Egg Calculator
Simulate your retirement nest egg growth with employer 401(k) matching, inflation-adjusted purchasing power, and post-retirement safe withdrawal longevity.
Inflation & Purchasing Power Calculator
Calculate how inflation erodes purchasing power over time, and determine the exact future dollar amount needed to maintain your standard of living.
Hourly to Salary Calculator
Convert your hourly wage into annual salary, monthly pay, bi-weekly, weekly, and daily paycheck intervals with paid time off and overtime adjustments.
Annual to Hourly Calculator
Convert your annual gross salary into an equivalent hourly wage, daily earnings, weekly salary, and monthly paycheck with custom work hours and unpaid leave.
Debt Payoff & Credit Card Payoff Calculator
Accelerate debt elimination using Debt Avalanche or Debt Snowball strategies. Simulate monthly extra payments and export full payoff amortization schedules to Excel.
High-Yield Savings & CD Calculator
Compare liquid High-Yield Savings Accounts (HYSA) against Certificate of Deposit (CD) fixed rates. Model daily vs monthly compounding and export growth schedules to Excel.
UK Salary & Take-Home Pay Calculator
Calculate your exact UK net take-home pay under 2024/25 & 2026/27 HMRC tax bands, 8% National Insurance rates, workplace pensions, and Student Loan repayment plans.
Canada Paycheck & Salary Take-Home Calculator
Calculate your Canadian net paycheck across Ontario, British Columbia, Alberta, and Quebec with 2024 CRA tax brackets, CPP/CPP2, EI premiums, and RRSP deductions.
Australia Pay & Salary Take-Home Calculator
Calculate your Australian net take-home pay under 2024-25 & 2026 ATO Stage 3 tax cuts, 2% Medicare levy, 11.5% Superannuation Guarantee, and HELP/HECS debt repayments.
Interest Rate Hike EMI Calculator
Calculate your revised loan EMI, monthly cash increase, and cumulative lifetime interest penalty after central bank repo rate hikes. Compare higher EMI vs. tenure extension side-by-side.
Home Loan Balance Transfer Savings Calculator
Calculate exact net lifetime savings and break-even horizon when switching your home loan to a lower-interest lender. Accounts for MODT stamp duty, processing fees, and legal charges.
Home Loan Overdraft (SBI MaxGain) vs Prepayment Calculator
Compare Home Loan Overdraft accounts (SBI MaxGain, BoB Home Loan Advantage, PNB Max-Saver) with regular term loans & direct prepayment. Calculate daily interest offset, tenure reduction, and exact break-even parked surplus balance.
Quantitative Strategy Risk & Sizing Calculator
Calculate exact position sizing, dollar risk per trade, Kelly Criterion limits, Sharpe ratio, Sortino, and Max Drawdown locally in your browser with zero server uploads.
In-Browser SQL Query Studio
Run lightning-fast analytical SQL queries directly against CSV, Parquet, Excel, and JSON files inside browser RAM with zero server uploads.
Spreadsheet & File Diff Checker
Compare two CSV or Excel spreadsheets side by side. Visually inspect added rows, deleted records, and changed cell values in color.
Client-Side Data Cleaner & PII Anonymizer
Mask customer emails, phone numbers, credit cards, and SSNs in CSV and Excel spreadsheets before sharing or training AI models. 100% private.
CSV to JSONL Converter (AI Dataset Studio)
Convert CSV, TSV, and Excel spreadsheets into clean, token-counted JSONL training datasets for OpenAI, Anthropic Claude, and Llama fine-tuning. 100% private.
Passport Photo with White Background
Turn any home selfie or portrait into an official passport or visa photo with a plain white background and precise dimensions.
AI Face Unblur & Restoration
Bring blurry, out-of-focus, or vintage portraits back to life. AI reconstructs facial features, eyes, and skin textures in seconds.
AI Photo Enhancer & Upscaler
Multiply photo resolution by 400% without losing quality. Reconstruct crisp textures and sharp edges from small images.
AI Image & Face Unblur Tool
Clear up out-of-focus, blurry, or low-resolution images in one click using neural AI restoration.
AI Speech to Text Converter
Transcribe audio and video to text in seconds using Whisper Large-v3-Turbo and Parakeet-TDT. Accurate timestamps, SRT/VTT subtitles, and 99+ languages.
AI Text to Speech Generator
Convert text into realistic, studio-quality human voices in seconds. Powered by Kokoro-82M with 10 American and British voice accents.
AI Content & Text Detector
Detect ChatGPT, GPT-4, Claude, and Gemini generated text with high accuracy. Sentence-by-sentence perplexity analysis and burstiness scoring.
AI Text Checker
Identify AI generated copy, essays, and articles with sentence-by-sentence probability scores.
PDF to Markdown Converter & OCR
Convert PDFs, scanned documents, and images to clean GitHub-Flavored Markdown. Auto-reconstruct tables, headings, and code blocks.
Document to Markdown OCR
Convert documents and images into structured Markdown for documentation and AI prompts.
AI Audio Noise Reducer
Remove background hiss, fan hum, traffic noise, and room echo from audio recordings using DeepFilterNet 3 neural suppression.
Clean Audio Voice Enhancer
Clean up noisy audio recordings and remove microphone hum instantly.
AI Video Compressor & Optimizer
Compress MP4, MOV, and MKV videos to exact target sizes for Discord (25MB), WhatsApp (16MB), and Email (20MB) with zero visual quality loss.
Compress Video to Target MB
Reduce video file sizes to exact target MB for Discord, WhatsApp, and Web.
AI Vocal Remover & Acapella Isolator
Separate vocals and instruments from any song using Demucs v4 neural network. Extract isolated acapellas and clean backing karaoke tracks.
Isolate Vocals from Audio
Extract pure human vocals from songs and voice recordings with Demucs AI.
Acapella Extractor
Make studio-quality acapella tracks from songs in seconds.
Auto Subtitle Generator
Generate synchronized subtitles and closed captions for videos using Whisper Large-v3. Download industry-standard .srt and .vtt files with millisecond precision.
Generate Subtitles from Video
Create synced captions and subtitle files from video and audio in seconds.
Compress Image to 20KB
Compress JPG, PNG, and WebP images to under 20KB for signatures, SSC, UPSC, and government portal uploads.
Compress Image to 50KB
Compress photos to exactly under 50KB (between 20KB and 50KB) for passport portals, visa applications, and exam registrations.
Compress Image to 100KB
Compress images and scanned certificates to under 100KB for online forms, US visa uploads, and ID cards.
Reduce Image Size in KB
Reduce photo and image sizes to any custom KB ceiling (20KB, 50KB, 100KB, 200KB) with exact byte control.
Increase Image Size in KB
Increase photo and image file size in KB to satisfy minimum portal requirements (e.g. min 20KB, min 50KB) without distortion.
Compress Image to 200KB
Compress photos, certificates, and identity documents to under 200KB for government and university portals.
Passport Photo Maker
Create official passport and visa photos online. Auto-crop face to 35x45mm or 2x2 inch standards with official plain background.
Online Signature Resizer
Resize and compress signature images to exact dimensions (140x60 px) and file size (10KB - 20KB) for government and exam portals.
SSC Photo & Signature Resizer
Resize photos (3.5 x 4.5 cm, 20-50KB) and signatures (140 x 60 px, 10-20KB) for Staff Selection Commission online application portals.
UPSC Photo & Signature Resizer
Format and resize candidate photos (350 x 350 px, 20-300KB) and signatures to exact UPSC Online portal specifications.
PAN Card Photo & Signature Resizer
Resize photos to 213 x 213 pixels at 300 DPI (under 30KB) and signatures to 400 x 200 pixels for NSDL and UTIITSL PAN card portals.
Receipt Scanner & Expense OCR
Extract vendor names, dates, line items, taxes, and totals from receipt photos and invoices into structured JSON and CSV.
Parse Receipt to CSV
Convert receipt photos into organized spreadsheet rows.
Downloadable Excel Financial Templates (.xlsx)
Pre-built, formula-driven spreadsheets ready to open in Microsoft Excel, Google Sheets, or Apple Numbers. 100% free & private.
50/30/20 Personal Budget & Wealth Planner
Automated monthly cash-flow manager dividing net take-home pay into 50% Needs, 30% Wants, and 20% Savings & Debt Acceleration.
Debt Snowball & Avalanche Payoff Calculator
Side-by-side debt elimination planner comparing the psychological wins of the Snowball method (lowest balance) vs mathematical savings of the Avalanche method (highest APR).
Rental Property & Real Estate ROI Cash Flow Model
Complete real estate investment analysis: calculates Net Operating Income (NOI), Capitalization Rate (Cap Rate), Cash-on-Cash Return, and debt service coverage (DSCR).
Personal Net Worth & Asset Allocation Tracker
Track all liquid assets, retirement portfolios, real estate equity, and liabilities over time to visualize trajectory toward financial independence.
Why ConvertSheet Tools Are Different
Unlike legacy calculator hubs that record your financial inputs or upload your PDF files to remote cloud servers, ConvertSheet executes all logic locally in your browser memory.
Powered by SheetJS, our financial calculators allow you to download complete month-by-month and year-by-year amortization schedules directly into Microsoft Excel or Google Sheets.
Every calculation recalculates instantly on keystroke with zero network round trips. Free forever with no account creation or credit card required.