All Free Online Tools

Browse our complete collection of free number system converters and financial calculators. No signup required.

Number System Tools

Number System Converter

Convert between binary, octal, decimal, and hexadecimal with step-by-step working.

BCD Converter

Convert decimal numbers to Binary Coded Decimal and back.

1's & 2's Complement

Calculate 1's and 2's complement of binary numbers with steps.

ASCII Converter

Convert text to ASCII codes, binary, hex, and octal.

Binary Arithmetic

Add, subtract, and multiply binary numbers with column-by-column steps.

IEEE 754 Converter

Convert decimals to 32-bit and 64-bit IEEE 754 floating point.

Quick Converters

Binary to Decimal → Decimal to Binary → Binary to Hexadecimal → Hexadecimal to Binary → Decimal to Hexadecimal → Hexadecimal to Decimal → Octal to Decimal → Decimal to Octal → Binary to Octal → Octal to Binary → ASCII to Binary → Binary to ASCII → Text to Binary → Binary to Text →

Financial Calculators

EMI Calculator

Calculate monthly EMI with full amortization schedule for Indian loans.

Simple Interest

Calculate simple interest using SI = P × R × T / 100.

Compound Interest

Calculate compound interest with multiple compounding frequencies.

GST Calculator

Add or remove GST with CGST/SGST breakdown for India.

Percentage Calculator

Find percentage of a number, what percent, and percent change.

Age Calculator

Calculate exact age in years, months, and days from date of birth.

Discount Calculator

Calculate discounted price or find discount percentage from prices.

SIP Calculator

Calculate SIP returns for mutual fund investments with year-wise growth breakdown.

RD Calculator

Calculate Recurring Deposit maturity amount with quarterly compounding as per Indian banks.

Income Tax Calculator

Calculate income tax for FY 2025-26 under new and old regime with slab-wise breakdown.

CAGR Calculator

Calculate Compound Annual Growth Rate for any investment with year-wise growth breakdown.

Net Salary Calculator

Calculate take-home salary from CTC with EPF, professional tax, and TDS breakdown.

PPF Calculator

Calculate PPF maturity amount with yearly interest at current 7.1% rate for 15 years.

TDS Calculator

Calculate TDS (Tax Deducted at Source) on salary, rent, professional fees and more for FY 2025-26.

TCS Calculator

Calculate TCS (Tax Collected at Source) on goods, foreign remittance, and motor vehicles.

CGPA/SGPA to Percentage

Convert CGPA or SGPA to percentage for CBSE, AKTU, VTU, Mumbai University, and more.