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
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.