Free Online Calculators, Converters & Developer Tools
BroHelp.me provides over 2000 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.
- Pascals To Millimeters-Of-Water-Column Converter Convert pressure from Pascals (Pa) to Millimeters of Water Column (4 °C) (mmH₂O (4 °C)). One Pa equals 0.101971621297793 mmH₂O (4 °C); select the reverse direction to convert back.
- Meters per second To Miles per minute Converter Convert Meters per second (m/s) to Miles per minute (mi/min) using the standard unit ratio; switch directions to convert back.
- Megawatt-Hours To Megajoules Converter Convert energy from Megawatt-Hours (MWh) to Megajoules (MJ). One MWh equals 3600 MJ; select the reverse direction to convert back.
- Square Kilometers To Hectares Converter Convert square kilometers to hectares using 1 km² = 100 hectares, with instant results.
- Watts per square meter To Microwatts per square meter Converter Convert Watts per square meter (W/m²) to Microwatts per square meter (µW/m²) or switch the direction selector to convert back.
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, water hardness, typography, luminance, luminous flux, linear and surface density, and specialist engineering measurements.
- 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.