Education
Compute 2-3 gene Mendelian crosses with a full Punnett square and forked-line branch diagram. Supports complete, incomplete and codominance inheritance.
punnett-trihybrid-crossGames
Classic rock-paper-scissors with a random opponent or an adaptive AI that learns your patterns. Shake animation, running score, and history.
rock-paper-scissorsMath & Numbers
Compute period, length, or gravity of a simple pendulum, plus amplitude-based peak speed and energy
pendulum-calculatorMath & Numbers
Solve pressure, force, or area from P=F/A, and convert between Pa, kPa, MPa, bar, atm, psi, Torr, inHg, kgf/cm²
pressure-conversionMath & Numbers
Solve wavelength, frequency, or wave speed from v=f·λ, with derived period, angular frequency, wave number, and photon energy
wavelength-calculatorDesign
Preview a heading + body Google Fonts pairing with weight and line-height controls, and copy a ready-to-paste CSS @import + variables snippet. Curated 22-face registry plus 7 proven pairing presets.
webfont-pairing-labMath & Numbers
Compute gravitational potential energy, mass, or height from the other two, with impact velocity
potential-energy-calculatorMath & Numbers
Compute range, max height, flight time, and the full trajectory of a projectile given speed, angle, and optional initial height
projectile-motion-calculatorMedia
Convert a bitmap image into reconstruction-first audio designed to reappear in a spectrogram, then export the audio and a verification spectrogram preview together.
image-to-spectrogram-audioMath & Numbers
Combine resistors in series, parallel, or an arbitrary +/| expression, with per-resistor voltage and power
resistor-series-parallel-calculatorMath & Numbers
Calculate divider output voltage, solve for R1 or R2, and evaluate load effects with a circuit diagram
voltage-divider-calculatorMath & Numbers
Compute cable voltage drop from current, length, conductor size (AWG/mm²) and material, for DC, single-phase and three-phase circuits
voltage-drop-calculator