Free Online Calculators, Converters & Developer Tools
BroHelp.me provides over 160 free, instant, and privacy-focused online utilities for math, unit conversions, number bases, text manipulation, and developer workflows. All tools run client-side right in your browser with zero registration required.
Featured Tools
Explore these randomly selected tools or browse through the complete directory in the sidebar menu.
- Meters To Kilometers Converter Free online Meters To Kilometers Converter. Convert lengths from meters to kilometers accurately with conversion formula, reference table, and real-time calculation.
- Kilograms To Milligrams Converter Free online Kilograms To Milligrams Converter. Convert weights from kilograms to milligrams with a reference table and instant calculation.
- Remove Spaces Free online remove spaces tool. Eliminate extra spaces, leading/trailing whitespace, or all spaces from text instantly.
- Arcsin Calculator Free online arcsin calculator. Calculate inverse sine function with instant answers in radians and degrees, plus conversion table.
- Kilograms To Metric Tons Converter Free online Kilograms To Metric Tons Converter. Convert weights from kilograms to metric tons with conversion formula, reference table, and instant calculation.
Browse by Category
Jump straight to a category to see its full list of tools plus a few featured picks.
- Math Calculators Solve everyday math problems instantly, including square roots, logarithms, exponents, factorials, Fibonacci numbers, rounding, and prime checks.
- Length Converters Convert between metric and imperial length units, including meters, feet, inches, miles, and nautical miles.
- Weight Converters Convert weight and mass between nanograms, micrograms, milligrams, grams, kilograms, ounces, pennyweights, pounds, stones, carats, grains, slugs, troy ounces, and metric, US short, or Imperial long tons.
- Energy Converters Convert energy between joules, megajoules, gigajoules, kilowatt-hours, megawatt-hours, BTU, calories, kilocalories, and electronvolt units from eV to TeV.
- Frequency Converters Convert frequency, angular frequency, rotational speed, cycles per time, and the period of repeating signals.
- Electric Charge Converters Convert electric charge between coulombs, SI prefixes, elementary charges, ampere-hours, and additional electromagnetic charge units.
- Trigon Functions Calculate sine, cosine, tangent, and their inverses, convert angles between degrees, radians, arcminutes, arcseconds, milliradians, gradians, turns, and DMS, and solve circle arc, chord, and sector problems.
- Base Converters Convert numbers between binary, decimal, hexadecimal, octal, Gray code, and base 36.
- Text Tools Transform and analyze text with case converters, counters, a text diff, URL and Unicode encoders, and other everyday writing utilities.
- Data Converters Convert digital storage units from bytes to petabytes using both decimal (1000) and binary (1024) standards.
- Generators Generate random numbers, digit codes, letters, passwords, colors, MAC addresses, and dice rolls for testing, games, and everyday use.
- Temperature Converters Convert temperature values between Celsius, Fahrenheit, Kelvin, Rankine, Reaumur, Newton, and Delisle scales.
- Power Converters Convert power units between microwatts, milliwatts, watts, kilowatts, megawatts, gigawatts, horsepower, BTU per hour, kilocalories per hour, dBm, dBW, and tons of refrigeration.
- Color Converters Convert colors between RGB, HEX, HSL, HSV, and CMYK formats for design and development work.
- Error Detecting Calculate and verify parity bits, Hamming codes, and CRC checksums used for error detection and correction.
- Various Tools A mix of handy utilities including a discount calculator, Unix timestamp converter, click counter, and quick yes/no and go/no-go decision helpers.
- Info Tools Check your IP address, screen resolution, JavaScript support, the current Unix timestamp, and the current week number.