Standard Convert: Complete Feature Guide to the Free Browser-Based Unit Converter & PDF Toolkit

Standard Convert is a free, privacy-first suite of unit converters, PDF utilities, and creator calculators that run entirely inside your browser. No file you upload and no number you type ever touches a server — everything is processed locally using modern Web APIs. Below is a full walkthrough of every tool on the site and exactly what each one does.

All-in-One Unit Converter

standardconvert.com/unit-converter is the flagship tool: 15 categories — Length, Mass, Temperature, Area, Volume, Speed, Time, Energy, Power, Pressure, Digital Data, Angle, Fuel Economy, Currency, and Frequency — covering 100+ unit types. It's backed by a deep reference guide with 149+ formulas explaining the science behind each conversion, from the 2019 SI redefinition of the kilogram to why fuel-economy conversions require a reciprocal rather than a linear formula.

Bulk Unit Converter

standardconvert.com/bulk-unit-converter handles batch conversion of CSV and Excel files, built for engineers and analysts moving thousands of data points at once. It's framed around industrial use cases like oil & gas sensor logs and freight/material-science workflows, with dedicated category pages:

• Length Bulk Converter


• Mass Bulk Converter — paired with a physics primer on mass vs. weight and E=mc².


• Temperature Bulk Converter


• Volume Bulk Converter


• Energy Bulk Converter


• Pressure Bulk Converter — tuned for MPa/kPa/Pa conversions in oil & gas sensor logs.

PDF Tools

The PDF Tools section runs four local-first document utilities:

• Image to PDF Converter — converts PNG, JPG, and WebP images into a single PDF entirely in-browser via the Canvas/File API.


• PDF Metadata Remover — strips author, GPS, timestamp, and XMP metadata locally before you share a file.


• Merge PDF Files — upload multiple PDFs, drag to reorder them, then merge into one document in three steps. No sign-up, no paywall, no tracking; processing runs through the browser's native File API and works across Chrome, Firefox, Safari, and Edge on desktop and mobile.


• Markdown to PDF Converter — the most feature-dense tool on the site. It takes pasted or uploaded .md/.markdown files and renders them to print-quality PDF via the browser's native print dialog. Highlights include:
  
  
  
  • Native rendering of Mermaid diagrams — flowcharts, sequence diagrams, Gantt charts, and state diagrams — inside the PDF output, not as broken code blocks.
  
  
  • LaTeX/KaTeX math support for inline ($...$) and block ($$...$$) equations, rendered as vector text so they stay crisp and selectable.
  
  
  • Four built-in print themes — Clean/neutral, Serif/paper-style, Compact/dense, and Corporate/tight — with no CSS required.
  
  
  • Smart page-break handling: code blocks and tables never split mid-block, table headers repeat across pages, and headings stay attached to their content.
  
  
  • Adjustable page size and margins.
  
  
  • A built-in verification guide showing technically-minded users how to confirm the zero-upload claim themselves via DevTools' Network tab, or by testing the tool with Wi-Fi disabled entirely.
  
  
  • An FAQ covering common issues like preserving Mermaid diagrams during export and stopping code blocks from breaking across pages.
  
  
  
  

Calculators

The Calculators section covers creator-economy and construction estimation tools:

• Long-form YouTube Earnings Calculator — estimates ad revenue for videos over 8 minutes using niche RPM multipliers.


• YouTube Shorts Earnings Calculator — projects vertical-video ad-pool payouts.


• Concrete Calculator — a job-site estimator covering cubic yard/meter volume, on-site sand moisture adjustments, rebar estimation, and concrete truck delivery scheduling, with separate breakdowns for slabs, footings, round piers, and stairs.

About Us

The About Us page lays out the project's mission: giving engineers and data professionals browser-native tools without sacrificing data security, built on a zero-server architecture and a commitment to keeping conversion logic aligned with current engineering and scientific standards.