Free Online Calculators, Converters & Developer Tools
BroHelp.me provides over 4000 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.
- Grays To Rads Converter Convert absorbed radiation dose between grays and rads in either direction.
- Becquerels per Liter To Becquerels per Cubic Meter Converter Convert between Becquerels per Liter (Bq/L) and Becquerels per Cubic Meter (Bq/m³). Switch directions, enter a value, and compare results in the conversion table.
- BTU To Joules Converter Convert International Table BTU to joules using 1 BTU = 1,055.05585262 joules, with instant results and a conversion table.
- Milliwatts To Megawatts Converter Convert milliwatts to megawatts using the exact relationship 1 MW = 1,000,000,000 mW.
- Nanoseconds To Milliseconds Converter Convert between Nanoseconds (ns) and Milliseconds (ms). Switch directions, enter a value, and compare results in the conversion table.
Browse by Category
Jump straight to a category to see its full list of tools plus a few featured picks.
- Unit Converters Convert between metric, imperial and engineering units for length, area, volume, weight, temperature, speed, pressure, energy, power, thermal properties, electromagnetism, photometry, water hardness, typography, and specialist scientific measurements such as second moment of area, specific weight, molar volume and energy, heat capacities, radiant exposure, activity concentration, radiation dose rate, spectroscopic wavenumber, surface charge density, and porous-media permeability.
- Math Tools Calculators for arithmetic, trigonometry, number bases and checksums, built for students, engineers and developers.
- Text & Encoding Tools Clean, format, analyse and encode text online, from case conversion and duplicate-line removal to word counts, Base64, hex, Unicode and URL encoding.
- Developer & Design Tools Color format converters, timestamp tools and browser information checks for web developers and designers.
- Generators Generate random numbers, digit codes, letters, passwords, colors, MAC addresses, and dice rolls for testing, games, and everyday use.
- Everyday Tools Quick helpers for daily life: calculate discounts, keep a tally with a click counter, or let chance make a yes-or-no decision.