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.

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.