Science Tools — Free Online Utilities

Science is a compact category of seven reference and calculation tools. The Periodic Table Explorer is an interactive table — click an element to see its properties — and the Chemical Formula Calculator parses a formula such as C6H12O6 and returns molar mass and percent composition. For biology, the DNA / RNA Translator turns a DNA sequence into its complement, mRNA and protein chain with a codon-by-codon breakdown, and DNA Sequence Tools adds GC content, transcription and translation for quick sequence checks. The Physics Calculator solves common textbook problems with step-by-step solutions, and the Scientific Unit Converter handles energy, pressure, force, power and frequency units that the general converter does not. The Earth & Space Calculator is the light-hearted one: your weight and age on other planets, and travel times across the solar system. Students and teachers are the main users; the tools compute locally in the browser and do not require an account.