Buddy Calculator — Free Online Calculators & Network Tools

Welcome to Buddy Calculator, your comprehensive free online calculator suite. We offer a wide range of accurate, fast, and easy-to-use calculators for math, finance, networking, and everyday calculations. No sign-up required, no ads, completely free for everyone.

Available Calculators

IP Subnet Calculator — calculate subnet masks, network addresses, broadcast addresses, and host ranges for any CIDR notation
EMI Calculator — calculate monthly installments for home loans, car loans, and personal loans
Loan Calculator — comprehensive loan repayment and amortization calculator
SIP Calculator — estimate mutual fund SIP returns with compounding
Income Tax Calculator — India new tax regime FY 2025-26
Percentage Calculator — solve percentage problems with multiple modes
Marks Percentage Calculator — calculate exam percentages instantly
CGPA Calculator — convert CGPA to percentage and grade
Age Calculator — calculate exact age in years, months, days
Scientific Calculator — trigonometry, logarithms, and advanced math

About Our Calculator Suite

Buddy Calculator provides essential calculation tools that work entirely in your browser. Your data stays private — we never store inputs or results on any server. Whether you are a student calculating exam percentages, an investor planning SIP returns, a network engineer subnetting an IP range, or a homebuyer estimating monthly EMI, our tools deliver instant, accurate results.

Visit our About Us page to learn more about our mission, or read our Privacy Policy and Terms of Use for legal information.