Science & Lab · Page 17
Explore physical quantities, motion, circuits, waves and chemical formula units with explicit units and model assumptions.
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A tool can belong to several categories. All tools lists each calculator once.
Chemistry
Concentration Basis Converter
Learning & Education · High School · Science & LabConvert mass fraction, mass percent, mass ppm, g/L, mg/L and mol/L using an explicit solution density and solute molar mass.
Open calculator ↗pH and Ion Concentration Calculator
Learning & Education · High School · Science & LabConvert pH and ion concentrations or model a single strong or weak monoprotic acid/base. Include water autoionization instead of ignoring dilute-solution effects.
Open calculator ↗Design
Exposure Settings and Stops Calculator
Design & Drawing · Science & Lab · Learning & EducationFind an equivalent shutter time, aperture or ISO, or compare two camera settings. Separate the light-exposure ratio from the ISO-adjusted brightness index.
Open calculator ↗Depth of Field and Hyperfocal Calculator
Design & Drawing · Science & Lab · Learning & EducationEstimate near and far acceptable-focus limits using focal length, aperture, focus distance and an explicit circle-of-confusion criterion.
Open calculator ↗Gardening
Geometry
Tank Liquid Volume Calculator
Construction & DIY · Science & Lab · Learning & EducationCalculate liquid volume, remaining capacity and fill percentage from internal dimensions and liquid depth. View the liquid cross-section and a level-to-volume table.
Open calculator ↗Great-Circle Distance and Bearing Calculator
Learning & Education · High School · Science & Lab · TravelCalculate the shortest surface distance and initial bearing between two latitude/longitude points on an entered spherical Earth model.
Open calculator ↗Mathematics
Poisson Probability Calculator
Learning & Education · High School · Science & Lab · IT & CommunicationCalculate exact-count and cumulative probabilities for events with a specified mean per interval. Compare below, at-most, at-least and above probabilities.
Open calculator ↗Measured Data Integration Calculator
Learning & Education · High School · Science & LabIntegrate tabulated measurements using trapezoids or composite Simpson 1/3. Keep interval contributions, signed accumulation and the entered unit labels visible.
Open calculator ↗Music
Optics
Physics
RC Charging and Discharging Calculator
Science & Lab · Learning & Education · High SchoolCalculate capacitor voltage, current and stored energy during an ideal RC transition, or solve the time needed to reach an entered target voltage.
Open calculator ↗Reynolds Number Calculator
Science & Lab · Learning & Education · High SchoolCalculate Reynolds number with dynamic or kinematic viscosity and mixed speed/length units. Optionally compare against a stated circular-pipe reference convention.
Open calculator ↗Resistor Color Code Converter
Science & Lab · IT & Communication · Learning & EducationDecode four- or five-band resistors, or encode an exactly representable resistance. Inspect nominal value, tolerance range and a labelled band diagram.
Open calculator ↗DC Wire Voltage Drop Calculator
Science & Lab · Construction & DIY · IT & CommunicationEstimate DC conductor voltage drop, load voltage and wire heating, or solve the conductor area for a chosen drop limit using an entered operating resistivity.
Open calculator ↗Battery Capacity and Runtime Calculator
Science & Lab · Shopping · IT & CommunicationConvert nominal battery charge and energy using battery voltage. Estimate constant-load runtime from usable capacity and conversion efficiency.
Open calculator ↗One-Dimensional Collision Calculator
Learning & Education · High School · Science & LabCalculate signed velocities after a collision from masses, incoming velocities and a restitution coefficient. Compare momentum and kinetic energy before and after contact.
Open calculator ↗Simple Harmonic Motion Calculator
Learning & Education · High School · Science & LabCalculate period, frequency, displacement, velocity and acceleration for an ideal oscillator. Enter frequency directly or use a mass–spring or small-angle pendulum model.
Open calculator ↗Mixing Temperature Calculator
Learning & Education · High School · Science & LabFind the equilibrium temperature of several bodies from their masses, specific heats and initial temperatures. Inspect the heat gained or lost by each body.
Open calculator ↗Photon Wavelength and Energy Converter
Learning & Education · High School · Science & LabConvert vacuum wavelength, frequency and energy per photon using the exact SI defining constants. Select independent input and output units.
Open calculator ↗Thermal Expansion Calculator
Learning & Education · High School · Science & Lab · Construction & DIY · Design & DrawingCalculate the dimensional change from a mean linear expansion coefficient and a temperature change. Compare linear, area and volume models.
Open calculator ↗Layered Heat Conduction Calculator
Learning & Education · High School · Science & Lab · Construction & DIYCalculate steady conductive heat flow through layers in series. Inspect thermal resistance, heat flux, transferred energy and interface temperatures.
Open calculator ↗Pipe Flow Rate and Velocity Calculator
Learning & Education · High School · Science & Lab · Construction & DIYConvert volumetric flow and average speed in a full circular pipe. Calculate mass flow and the time to fill an entered volume.
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