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.
- Cubic Millimeters To US Pints Converter Convert between Cubic Millimeters (mm^3) and US Pints (US pt). Switch directions, enter a value, and compare results in the conversion table.
- Coulombs per Square Meter To Nanocoulombs per Square Meter Converter Convert between Coulombs per Square Meter (C/m²) and Nanocoulombs per Square Meter (nC/m²). Switch directions, enter a value, and compare results in the conversion table.
- Moles Per Milliliter To Millimoles Per Liter Converter Convert between Moles Per Milliliter (mol/mL) and Millimoles Per Liter (mmol/L). Switch directions, enter a value, and compare results in the conversion table.
- Troy Ounces To Pennyweights Converter Convert between Troy Ounces (ozt) and Pennyweights (dwt). Switch directions, enter a value, and compare results in the conversion table.
- Pennyweights To Troy Ounces Converter Convert between Pennyweights (dwt) and Troy Ounces (ozt). 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.