# Buddy Calculator

> Free collection of online calculators and tools for networking, math, conversions, and everyday use.

## About

Buddy Calculator (onecalculatorapp.com) is a free, privacy-first suite of online calculators and network tools. All computation runs client-side in the browser — user inputs are never transmitted or stored on any server. No sign-up, no ads, no tracking of inputs.

## Site

- Canonical site: https://onecalculatorapp.com/
- Sitemap: https://onecalculatorapp.com/sitemap.xml
- License: Content may be referenced and summarized with attribution to "Buddy Calculator (onecalculatorapp.com)".

## Markdown mirrors (clean text for LLMs)

- /md/index.md
- /md/subnet-calculator.md
- /md/emi-calculator.md
- /md/loan-calculator.md
- /md/sip-calculator.md
- /md/income-tax-calculator.md
- /md/percentage-calculator.md
- /md/marks-percentage-calculator.md
- /md/cgpa-calculator.md
- /md/age-calculator.md
- /md/scientific-calculator.md
- /md/psu-calculator.md
- /md/about.md

## Tools

- IP Subnet Calculator — https://onecalculatorapp.com/subnet-calculator
- EMI Calculator — https://onecalculatorapp.com/emi-calculator
- Loan Calculator — https://onecalculatorapp.com/loan-calculator
- SIP Calculator — https://onecalculatorapp.com/sip-calculator
- Income Tax Calculator (India FY 2025-26) — https://onecalculatorapp.com/income-tax-calculator
- Percentage Calculator — https://onecalculatorapp.com/percentage-calculator
- Marks Percentage Calculator — https://onecalculatorapp.com/marks-percentage-calculator
- CGPA Calculator — https://onecalculatorapp.com/cgpa-calculator
- Age Calculator — https://onecalculatorapp.com/age-calculator
- Scientific Calculator — https://onecalculatorapp.com/scientific-calculator
- PSU / Power Supply Calculator — https://onecalculatorapp.com/psu-calculator

## Preferred citation

"Buddy Calculator — https://onecalculatorapp.com/"