Category
Science Tools — Free Online Utilities
Science tools grounded in real formulas: converters, calculators, and simulators for chemistry, biology, and physics tasks.
7 tools
Free
No signup
Chemical Formula Calculator
Parse chemical formulas and calculate molar mass and percent composition.
DNA / RNA Translator
Translate DNA sequences to complementary DNA, mRNA, and protein chains with codon-by-codon breakdown.
DNA Sequence Tools
Analyze DNA sequences: complement, GC content, transcription, and translation.
Earth & Space Calculator
Fun astronomy calculators: planetary weight, travel time, age on other planets, and more.
Periodic Table Explorer
Interactive periodic table — click any element to explore its properties.
Physics Calculator
Solve common physics problems with step-by-step solutions.
Scientific Unit Converter
Convert between scientific units for energy, pressure, force, power, and frequency.