Waves and Optics
Wavelength, frequency, thin lenses, Snell's law, diffraction gratings and noise level calculators
Wavelength Calculator
Calculate wavelength, frequency, wave speed, period and wave number for light, radio waves, sound and custom media.
Frequency Calculator
Calculate frequency from period, wavelength and wave speed, cycle count over time, RPM or angular frequency.
Thin Lens Calculator
Calculate image distance, object distance, focal length, magnification, image height, image type and lens power from the thin-lens equation.
Snell's Law Calculator
Solve Snell's law for refraction angle, incident angle, refractive index, critical angle, total internal reflection and Brewster angle.
Diffraction Grating Calculator
Calculate diffraction angle, wavelength, grating spacing, line density, maximum order, angular dispersion and resolving power from the grating equation.
Noise Level Calculator
Combine decibel or dBA levels, add identical noise sources, estimate distance attenuation and review cautious NIOSH exposure guidance.