Number Tools

Parse and format numbers, convert bases, generate random or structured values, and handle rounding with precision and accuracy.

27 tools available

Calculators 2

Financial Calculators 2

GPA Calculator

Calculate your GPA in 4.0 (US), 10.0 (Vietnam/EU) or 100-point (China/Korea) scales. Credit-weighted, Latin honors, plus true cumulative GPA carry-over.

Tip calculator

Calculate tip and split the bill per person in any currency. Round each share to clean cash, see the effective tip %, and tipping by country.

Conversion 25

Number Conversion 25

Roman Numerals

Free Roman numeral converter. Convert decimal numbers (1–3999) to Roman numerals and back. Validates canonical form, shows the step-by-step breakdown, and explains every symbol.

ASCII Hex Binary Dec Converter

Convert between ASCII text, hexadecimal, binary, decimal, and Base64 encoding. Free online number system converter with delimiter and prefix options.

Base Converter

Convert numbers between different number bases (2-36). Free online base converter supporting binary, octal, decimal, hexadecimal and any base up to 36.

Binary Converter

Convert binary numbers to decimal, hexadecimal, octal, and ASCII text. Free online binary converter with instant results.

Binary to ASCII Converter

Convert binary strings to ASCII, UTF-8, and other character encodings. Free online binary to text converter with file support.

Binary to Decimal

Convert binary numbers (base-2) to decimal numbers (base-10) instantly. Free online binary to decimal converter with step-by-step conversion process.

Binary to Hex

Convert binary numbers to hexadecimal and decimal. Free online binary to hex converter with step-by-step calculations and digit grouping support.

Binary to Octal

Convert binary numbers (base-2) to octal numbers (base-8) instantly. Free online binary to octal converter with step-by-step conversion process.

Decimal to Binary

Convert decimal numbers (base-10) to binary numbers (base-2) instantly. Free online decimal to binary converter with conversion steps.

Decimal to Hex

Convert decimal numbers to hexadecimal with step-by-step calculation. Simple and accurate decimal to hex conversion tool.

Decimal to Octal

Convert decimal numbers to octal and hexadecimal with step-by-step calculation. Simple and accurate decimal to octal conversion tool.

Decimal to Percent

Convert decimal numbers to percentage with step-by-step calculation. Simple and accurate decimal to percent conversion tool.

Hex Dec Bin Converter

Convert between hexadecimal, decimal, binary, and octal numbers instantly. Interactive bit toggle interface with support for signed numbers and different bit widths.

Hex to Binary

Convert hexadecimal numbers to binary numbers instantly. Free online hex to binary converter with step-by-step conversion process and digit grouping.

Hex to Decimal

Convert hexadecimal numbers to decimal with step-by-step calculation. Supports signed and unsigned decimal conversion with binary representation.

Hex to Octal

Convert hexadecimal numbers to octal with step-by-step calculation. Supports both octal and decimal output with detailed conversion steps.

Octal to Binary

Convert octal numbers to binary with step-by-step calculation. Simple and accurate octal to binary conversion tool. Free converter with formulas.

Octal to Decimal

Convert octal numbers to decimal with step-by-step calculation. Simple and accurate octal to decimal conversion tool. Free converter with formulas.

Octal to Hex

Convert octal numbers to hexadecimal with step-by-step calculation. Simple and accurate octal to hex conversion tool. Free converter with formulas.

PPB to PPM

Convert PPB to PPM (ppb to ppm) instantly with our free online converter. Accurate ppm = ppb ÷ 1000 formula, examples, conversion table and step-by-step...

PPM to PPB

Convert PPM to PPB (ppm to ppb) instantly with our free online converter. Accurate ppb = ppm × 1000 formula, examples, conversion table and step-by-step...

PPM to PPT

Convert PPM to PPT (ppm to ppt) instantly with our free online converter. Accurate ppt = ppm × 1,000,000 formula, examples, conversion table and...

PPM to Percent

Convert PPM to Percent (ppm to %) instantly with our free online converter. Accurate % = ppm ÷ 10000 formula, examples, conversion table and step-by-step...

PPT to PPM

Convert PPT to PPM (ppt to ppm) instantly with our free online converter. Accurate ppm = ppt ÷ 1,000,000 formula, examples, conversion table and...

Percent to PPM

Convert Percent to PPM (% to ppm) instantly with our free online converter. Accurate ppm = % × 10000 formula, examples, conversion table and step-by-step...