ToolMulti
Cover text, image, file, audio/video and development scenarios. Open your browser and get things done — no installs required.
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Popular Tools
Character Counter
Count characters, words, sentences
Character Statistics
Count character frequency
BMI Quick Calculator
Calculate BMI
Quick Body Fat Estimator
Calculate body fat percentage based on BMI formula
PDF Merge
Online PDF merger to combine multiple PDF files into one document in custom order with drag-and-drop sorting. Processed locally for privacy.
PDF Split
Online PDF splitter to divide a PDF document by page ranges. Supports custom ranges, per-page split, or fixed-size split with ZIP download.
Word to PDF
Convert Doc/Docx to PDF online. Upload a .docx file and render it as an A4 paginated PDF with paragraphs and layout preserved. Supports batch conversion, processed entirely in your browser.
PDF to Word
Convert PDF to a Word document (.docx) while preserving the text paragraph structure. Supports batch conversion.
QR Code Generator
A free online QR code generator that turns text, URLs, business cards, WiFi, and more into high-precision QR codes with one click. Offers rounded-corner customization, foreground/background color styling, and lossless downloads.
Batch QR Codes
Batch-generate QR codes from a text list and download them as a package.
Base64 Encoder
Encode to Base64
Base64 Decoder
Decode Base64
Newly Added
Pay Pal Fee Calculator
Calculate Pay Pal fees
Yu'e Bao Revenue Calculator
Calculate estimated revenue for Yu'e Bao
Credit Card Rate Calculator
Calculate real annual rate for credit card installments
Installment True APR Lookup Table
Free online lookup table for credit card and Huabei installment fee rates — instantly compare the true effective APR (IRR) for every rate tier, with CSV export.
Amount to Chinese Uppercase
Free online tool to convert a number into formal Chinese uppercase currency text — for invoices, contracts, receipts, and other financial documents.
IRR Calculator
Calculate Internal Rate of Return for investment projects
Compound Interest Calculator
Free online compound interest and investment return calculator.
2026 Tax Calculator
Calculate personal income tax and net salary
Loan Interest Calculator
Calculate loan interest based on amount, term and rate
Interest Rate Converter (D/M/Y)
Free online interest rate converter — switch between daily, monthly, and annual rates.
Frequency Tone Generator
Generate audio signals at specific frequencies.
White Noise Generator
Generate white noise audio files.