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Most Popular Converters

Find the calculators and converters people use most, arranged using the same popularity order as the homepage.

450 active tools available

Popular tools

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Scientific and Unit Converters
Fuel Economy Converter
Convert fuel economy between US MPG, UK MPG, km/L, mi/L, L/100km and L/100mi. Includes instant formulas and a practical trip fuel estimator.
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Image Tools
GIF to APNG Converter
Convert GIF to APNG online. Upload animated GIF files, create high quality APNG output, preview details, and download instantly.
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Image Tools
GIF to JPG Converter
Convert GIF to JPG online. Upload GIF images, create high quality JPG files, preview output, and download instantly.
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Video Tools
GIF to MP4
Convert GIF to MP4 online for free. Upload animated GIFs and download optimized MP4 videos quickly for web, mobile, and sharing.
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Image Tools
GIF to PDF Converter
Convert GIF to PDF online. Upload GIF images, create a clean PDF, preview details, and download your PDF easily.
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Image Tools
GIF to PNG
Convert GIF to PNG online for free. Upload GIF images and download clean PNG files quickly for web, design, and sharing.
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Image Tools
GIF to WEBP Converter
Convert GIF images to WEBP online. Preserve animation, choose quality, preview details, and download a smaller modern WEBP securely.
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PDF Intelligence
Grammar Check (PDF/Doc)
Check grammar in PDF, DOC, and DOCX files online. Upload your document and get corrected text with clear writing suggestions.
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Developer Tools
Gray to Binary Code Converter
Convert Gray code to binary online. Enter Gray code, get binary result, reverse binary to Gray, view steps, copy, and download output.
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Archive Tools
GZ to ZIP Converter
Convert GZ to ZIP online for free. Extract GZIP files and download a real ZIP archive quickly. No signup or extra software required.
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Developer Tools
Handwriting to Text Converter
Convert handwriting to text online. Upload handwritten notes image, extract text with OCR, copy result, and download TXT instantly.
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Video Tools
HD Video Converter
Convert videos to HD online. Upload MP4, MOV, AVI, MKV, WEBM, or FLV, choose 720p or 1080p, and download HD video fast.
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Utility Tools
Hectare to Bigha Converter
Convert hectare to bigha instantly with state-wise rates for UP, Bihar, Rajasthan, Gujarat & more. Free, accurate land area converter tool.
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Image Tools
HEIC to JPG
Convert HEIC to JPG online for free. Upload iPhone HEIC photos and download clean JPG images quickly for web, sharing, and storage.
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PDF Tools
HEIC to PDF Converter
Convert HEIC to PDF online. Upload HEIC images, create a clean PDF, preview details, and download your PDF easily.
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Image Tools
HEIC to PNG Converter
Convert HEIC photos to high-quality PNG online. Upload, preview image details, and download a transparent-friendly PNG securely.
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Image Tools
HEIF to JPG Converter
Convert HEIF images to JPG online. Upload, preview image details, choose quality, and download a compatible JPG securely.
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Image Tools
HEIF to PNG Converter
Convert HEIF images to PNG online. Upload, preview image details, and download a high-quality PNG securely.
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Utility Tools
HEX to RGB Converter
Convert HEX to RGB online for free. Enter HEX color codes, preview colors, get RGB and RGBA values, copy CSS code, and download results.
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Language Tools
Hindi Font Generator
Type in English and instantly convert it to Hindi text online. Free Hindi font generator and typing tool for WhatsApp, Facebook, and documents.
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Developer Tools
HMAC Generator
Generate HMAC online. Create SHA-1, SHA-256, SHA-384, SHA-512 HMAC signatures with secret key and copy output easily.
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Web & HTML Tools
HTML Formatter
Format and beautify HTML code online for free. Paste messy HTML, clean indentation, copy formatted code, and improve readability.
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Web & HTML Tools
HTML Minifier
Minify HTML code online for free. Remove extra spaces, comments, and line breaks to reduce file size and improve page speed.
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Developer Tools
HTML Table to CSV Converter
Convert HTML tables to CSV online for free. Paste or upload HTML, select a table, preview clean CSV data, and download the result instantly.
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