Calculator Directory
Science Calculators
Calculate physical relationships and unit conversions with formulas, SI references, and clearly stated conditions.
Density Calculator Calculate density from mass and volume in common and SI units.
Temperature Converter Convert Fahrenheit, Celsius, and kelvin.
Volume Converter Convert liquid capacity and cubic-volume units.
Lumber Weight Calculator Estimate lumber weight from dimensions, quantity, and density.
Speed Calculator Calculate average speed in mph, km/h, and m/s.
Force Calculator Calculate force from mass and acceleration.
Distance Calculator Find straight-line distance, midpoint, coordinate change, and slope.
Acceleration Calculator Calculate acceleration, average velocity, and estimated distance.
Work Calculator Calculate mechanical work and average power.
Momentum Calculator Calculate momentum, impulse, and kinetic energy.
Kinetic Energy Calculator Calculate classical translational kinetic energy and momentum from mass and speed.
Potential Energy Calculator Estimate gravitational potential energy near a surface with approximately constant gravity.
Torque Calculator Calculate torque magnitude from force, lever-arm length, and the angle between them.
Wavelength Calculator Calculate wavelength and period from wave speed and frequency.
Centripetal Force Calculator Calculate inward force, centripetal acceleration, and angular speed from mass, speed, and circular path radius.
Spring Force Calculator Use Hooke’s law to calculate spring restoring force, force magnitude, and stored elastic energy.
Gravitational Force Calculator Gravitational Force calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Projectile Motion Calculator Projectile Motion calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Free Fall Calculator Free Fall calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Ideal Gas Law Calculator Ideal Gas Law calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Buoyancy Force Calculator Buoyancy Force calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Hydrostatic Pressure Calculator Hydrostatic Pressure calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Heat Energy Calculator Heat Energy calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Mechanical Advantage Calculator Mechanical Advantage calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Simple Pendulum Calculator Simple Pendulum calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Coulomb’s Law Calculator Coulomb’s Law calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Electric Field Calculator Electric Field calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Photon Energy Calculator Photon Energy calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Decibel Calculator Decibel calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Impulse Calculator Impulse calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Power Calculator Power calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Escape Velocity Calculator Escape Velocity calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Orbital Velocity Calculator Orbital Velocity calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Thin Lens Equation Calculator Thin Lens Equation calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Radioactive Decay Calculator Radioactive Decay calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Half-Life Calculator Half-Life calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Molarity Calculator Molarity calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Dilution Calculator Dilution calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Thermal Expansion Calculator Thermal Expansion calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Coefficient of Friction Calculator Coefficient of Friction calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Reynolds Number Calculator Reynolds Number calculations with validated inputs, formulas, worked defaults, limitations and reference notes.
Choose the right calculator
Enter measurements from the same sample and conditions. Preserve units, significant digits, temperature, pressure, and measurement uncertainty where they affect the result.
How these calculators are checked
Each tool shows its formula, assumptions, worked example, and limitations. We test default values, decimals, zero and invalid inputs, unit conversions, and rounding behavior. Learn more on How Our Calculators Work .
Important: Simplified calculators cannot reproduce laboratory methods, instrument calibration, material variability, or professional analysis.
Related calculator categories
Reference and review
This category and its linked calculators were reviewed by the DIY Cost Tools editorial team on September 28, 2026. Additional tools will be added without changing the category URL.