NT
NTN Tools
Tool directory

Every NTN Tools product in one place

Choose a tool to jump straight into the live experience or review what is coming next. Each listing links to documentation that explains the math, data sources, and release history behind the interface.

Live tools

Updated continuously with changelog entries and inline guides.

Request a walkthrough
Math and numbersLive

Calculator

A responsive calculator with scientific functions, keyboard shortcuts, and a downloadable tape for audits.

  • Live algebra preview
  • Memory registers
  • Keyboard-first layout
Open tool
FinanceLive

Mortgage Calculator

Model multiple loan scenarios, compare amortization schedules, and break down escrow contributions.

  • PMI estimation
  • Escrow adjustments
  • Printable summary
Open tool
HealthLive

Fertility Days Calculator

Plot ovulation windows, luteal phase averages, and reminders for pregnancy tests based on your cycle length.

  • Irregular cycle support
  • Downloadable calendar
  • Doctor-reviewed guidance
Open tool
ProductivityLive

Image Converter

Convert and compress PNG, JPG, WebP, SVG, and ICO files locally with control over quality and metadata.

  • Batch processing
  • Metadata stripping
  • Transparency preservation
Open tool
ProductivityLive

Clipboard Image Downloader

Paste images directly from your clipboard and download them as PNG, JPG, or WebP without saving manually.

  • Offline mode
  • Quality slider
  • Browser compatibility checks
Open tool
AccessibilityLive

AI Alt Text Generator

Generate multiple friendly, compliant alt text options using Google Gemini with keyword and brand context.

  • Tone variations
  • CSV export
  • Alt text checklist
Open tool

In progress

These tools are currently in development. Join the waitlist or send feedback if you want to influence the feature set before launch.

Science and engineeringIn progress

Unit Converter

A single interface for length, area, currency, and digital storage conversions with engineering presets.

  • Favorites list
  • Precision control
  • Keyboard navigation
Join the waitlist
ContentIn progress

Text Utilities

Word count, case conversion, regex find and replace, and readability scoring inside a distraction-free editor.

  • Readability metrics
  • Bulk formatting
  • Export to Markdown
Join the waitlist
BrandingIn progress

QR Code Generator

Create QR codes for URLs, Wi-Fi credentials, and contact cards with brand-safe color palettes.

  • Vector exports
  • Error correction presets
  • Logo overlays
Join the waitlist