🔬 Science tools
Ohm's law, density, molar mass and half-life. 4 free tools, all running right in your browser.
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Ohm's Law Calculator
Voltage, current, resistance and power.
Math & ScienceDensity Calculator
Density, mass or volume.
Math & ScienceMolar Mass Calculator
Molar mass from a chemical formula.
Math & ScienceHalf-Life Calculator
Radioactive decay and drug half-life.