Multi-Tool Web Suite 🛠️
Free browser tools: merge PDFs, convert images to PDF, calculate wire gauge sizes, compute BTU/HVAC capacity, check gold weight values, and format code. All operations process instantly in your browser for 100% privacy.
PDF & Document Suite
Merge multiple PDF files into one, convert JPG/PNG to PDF, or generate PDF from text.
Scientific Calculator
Full interactive calculator supporting standard, algebraic, and trigonometric operations.
BTU & HVAC Converter
Convert heating/cooling power between BTU/hr, kW, Watts, and Tons of Refrigeration.
Gold & Precious Metals
Calculate gold purity, weight conversions across troy ounces/grams, and market value.
Wire Gauge (AWG) Tool
Lookup American Wire Gauge sizes to find diameter, mm², and maximum safe ampacity.
General Unit Converter
Instant measurement conversions for length, mass, temperature, area, and speed.
JSON Formatter & Validator
Format, clean, minify, and validate JSON data structures instantly.
Password Generator
Generate strong, random cryptographic passwords with custom parameters.
Loan & Mortgage Calculator
Compute monthly loan payments, total interest costs, and repayment totals.
Frequently Asked Questions & Tool Guides
Are my files uploaded to a server?
No. All PDF files, converted images, and document conversions are processed entirely on your local browser using client-side JavaScript. Your files never touch external servers.
How is BTU cooling capacity calculated?
One BTU (British Thermal Unit) per hour is approximately equal to 0.293 Watts. For room air conditioning, a standard baseline is 20 BTU per square foot of living space.
What is American Wire Gauge (AWG)?
AWG is a standardized wire gauge system used predominantly in North America. Lower gauge numbers represent thicker wires with higher safe electrical ampacity ratings.
How do I convert Troy Ounces of Gold to Grams?
One Troy Ounce (ozt) equals exactly 31.1034768 grams. Troy ounces are the standard international unit for precious metals like gold, silver, and platinum.
PDF & Document Converter
Select PNG or JPG images to convert to PDF
How to convert images to PDF:
1. Upload your JPG or PNG files using the picker above.
2. Review the image ordering thumbnails.
3. Click Download PDF to create your compiled PDF document locally.
Scientific Calculator
BTU & HVAC Capacity Converter
Converted Output
Gold & Metals Value Calculator
American Wire Gauge (AWG) Lookup
General Unit Converter
JSON Formatter & Validator
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