How many megabytes are in a gigabyte?

In the decimal system (used by storage manufacturers and most everyday contexts), 1 gigabyte = 1,000 megabytes. In the binary system (used by operating systems to report actual storage), 1 gibibyte = 1,024 mebibytes. This is why a 1 TB drive shows as roughly 931 GB in your operating system - the manufacturer uses decimal, the OS uses binary.

What is aspect ratio?

Aspect ratio is the proportional relationship between the width and height of an image, video, or screen. Common ratios include 16:9 (widescreen video and monitors), 4:3 (older TVs and cameras), 1:1 (square, used on Instagram), and 9:16 (vertical video for mobile). The Aspect Ratio Calculator lets you find the missing dimension when you know the ratio and one side.

Converters and Utilities

Everyday converters and small utilities that just work.

32 tools available

Mock Data Generator

Generate realistic fake test data - names, emails, companies, dates, and more - as CSV or JSON. Pick your fields and row count, then copy or download. No signup.

Images to PDF

Combine multiple images into a single PDF. Choose page size and layout. Download instantly. Runs in your browser.

Receipt Photos to PDF - Expense Report Generator

Turn receipt photos into a printable expense report PDF. Add date, amount, description, and category to each receipt. Choose 1-up, 2x2, or 3x2 layout. Download in seconds.

File Size Converter

Convert between bytes, KB, MB, GB, and TB instantly. See all unit equivalents at once.

PDF Merger

Merge multiple PDF files into one. Drag to reorder pages. Runs entirely in your browser.

PDF Compressor

Compress PDF files to reduce their size. Works best on text and office documents.

PDF to JPG Converter

Convert PDF pages to JPG images. All pages extracted and ready to download.

Fill PDF Form Online - Free PDF Form Filler

Fill in interactive PDF forms in your browser without Adobe Acrobat. Works with AcroForm fields - text, checkboxes, and dropdowns. Download the completed PDF instantly.

Sign PDF - Add Signature to PDF Free

Add your handwritten or typed signature to a PDF document. Draw your signature on screen, drag it to position, and download the signed PDF. Runs in your browser - nothing uploaded.

PDF Redactor - Black Out Sensitive Information

Drag to draw black redaction boxes over sensitive text in any PDF. Designed for bank statements, contracts, and documents shared with landlords or lenders. Runs in your browser.

PDF Metadata Remover

Strip hidden metadata from a PDF - author name, company, creation software, dates, and keywords - before sharing it externally.

Shipping Label Cropper - Crop to 4x6 for Thermal Printers

Crop an oversized shipping label PDF to 4x6 inches for thermal printers. Use a preset or drag to select the label area, then download as a 4x6 PDF or PNG.

Compare Two CSV or Excel Files

Upload two CSV or Excel files to instantly see every row that changed, was added, or was removed. Click any row to see the exact field-level differences side by side.

JSON Formatter

Paste JSON to instantly format, validate, and minify it. See the exact location of any syntax error. Nothing is uploaded - runs entirely in your browser.

PDF Watermark Tool

Add a text watermark to every page of a PDF. Choose DRAFT, CONFIDENTIAL, FOR REVIEW ONLY, DO NOT DISTRIBUTE, or enter custom text. Set position, opacity, font size, and colour. Processed locally - no upload.

PDF Restriction Remover

Remove print, copy, and edit restrictions from PDFs that open without a password. Upload the PDF, click Remove restrictions, and download a clean unlocked copy. Processed locally - nothing uploaded.

PDF Page Organizer

Reorder, rotate, and delete pages from a PDF without Adobe Acrobat. Drag pages to a new position, rotate individual pages 90 degrees, delete unwanted pages, and download the reorganised PDF.

Audio Converter

Convert audio between MP3, WAV, OGG and FLAC in your browser. No upload, no signup.

MP3 to WAV Converter

Convert MP3 to uncompressed WAV in your browser. Free, no upload, no signup.

WAV to MP3 Converter

Convert WAV to MP3 in your browser and choose the bitrate. Free, no upload, no signup.

M4A to MP3 Converter

Convert M4A or AAC audio to MP3 in your browser. Free, no upload, no signup.

FLAC to MP3 Converter

Convert lossless FLAC to MP3 in your browser and pick the bitrate. Free, no upload.

WAV to FLAC Converter

Convert WAV to lossless FLAC in your browser to save space with no quality loss.

MP3 to OGG Converter

Convert MP3 to OGG (Vorbis) in your browser. Free, no upload, no signup.

Audio Trimmer and Cutter

Trim or cut an audio file to a start and end point in your browser. Free, no upload.

Video to MP3 Converter

Extract the audio from a video and save it as MP3, WAV, OGG or FLAC. In your browser, no upload.

Video to GIF Converter

Turn a video clip into an animated GIF. Set width, frame rate, and trim. Free, private, in your browser.

Video Compressor

Make a video file smaller without a big quality drop. Choose quality and resolution. Free, private, in your browser.

Video Trimmer

Cut a video down to the part you want. Set a start and end point and download the clip. Free, private, in your browser.

Video Converter

Convert a video to MP4, WebM, MOV, or MKV. Free, private, and runs entirely in your browser - nothing is uploaded.

Google Maps to Coordinates

Paste a Google Maps link and get the latitude and longitude, in decimal and DMS. Free, in your browser.

Coordinates to Google Maps

Turn a latitude and longitude into Google, Apple, and OpenStreetMap links and directions. Free, in your browser.

About Converters and Utilities

Some tasks are simple but constantly needed: converting a file size from megabytes to gigabytes, checking how an image's aspect ratio will change when you resize it, or quickly converting between units for a project. These converter and utility tools give instant answers without opening a dedicated application or searching through conversion tables. Each tool is focused on a single, well-defined task and returns a complete set of equivalent values so you can see all the conversions at once rather than running the calculation repeatedly for different units.

Who uses these tools?

Developers and system administrators checking file sizes in the appropriate unit for a given context
Video editors and designers verifying aspect ratios before resizing media for different platforms
Content creators checking how a file size or resolution will appear in different formats
Anyone who needs a quick, trustworthy unit conversion without ads or popups

Frequently asked questions

How many megabytes are in a gigabyte?: In the decimal system (used by storage manufacturers and most everyday contexts), 1 gigabyte = 1,000 megabytes. In the binary system (used by operating systems to report actual storage), 1 gibibyte = 1,024 mebibytes. This is why a 1 TB drive shows as roughly 931 GB in your operating system - the manufacturer uses decimal, the OS uses binary.
What is aspect ratio?: Aspect ratio is the proportional relationship between the width and height of an image, video, or screen. Common ratios include 16:9 (widescreen video and monitors), 4:3 (older TVs and cameras), 1:1 (square, used on Instagram), and 9:16 (vertical video for mobile). The Aspect Ratio Calculator lets you find the missing dimension when you know the ratio and one side.