# Good Tool

> Free mortgage & rental calculators for smarter housing decisions. Compare payments, analyze refinancing, and more.

Canonical page: [https://chrome-stats.com/d/good-tool-calculators](https://chrome-stats.com/d/good-tool-calculators)

## Overview

- **ID:** `good-tool-calculators`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** good-tool
- **Category:** search-tools,shopping
- **Version:** 1.0.0
- **Last updated:** 2025-01-03
- **First published:** 2025-01-02
- **Size:** 47 KB
- **Data as of:** 2026-09-14
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/good-tool-calculators/)
- **Website:** [https://goodtool.org](https://goodtool.org/)

## Description

Make smarter housing decisions with our collection of professional-grade mortgage and rental calculators right in your browser.

Key Features:
• Mortgage Tools:
- Calculate monthly payments (PITI)
- Analyze refinancing options
- Determine home affordability
- View detailed amortization schedules

• Rental Property Tools:
- Compare rent vs buy costs
- Calculate rental yields
- Analyze rental income potential
- Determine investment break-even

Privacy-Focused:
- No data collection or tracking
- All calculations performed locally
- Zero permissions required
- Works offline

Perfect for homebuyers, property investors, and anyone making housing decisions.

## Rankings

- #143,831 — Overall
- #223 — payments

## Safety

- **Risk impact:** Very low risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- This permission has no access or impact on the user's system or data, thus carrying no risk.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/good-tool-calculators)