Scientific Calculator
A free calculator that runs in your browser with no install. Switch between standard and scientific modes, and go beyond basic arithmetic with trigonometric functions (sin, cos, tan), logarithms (log, ln), powers and roots, factorials, and constants like π and e. It also supports memory keys (MC, MR, M+, M−), percentages, and degree/radian switching.
- Speed
- Time
- Distance
- Percentage
- Price with Tax
- Price Before Tax
- Discounted Price
- Rate of Change
- Proportional Distribution
- Unit Price
- Law of Cosines (Third Side)
- Law of Cosines (Angles)
- Law of Sines
- Area of a Triangle (Two Sides and the Included Angle)
- Heron's Formula
- Distance Between Two Points
- Line Through Two Points
- Magnitude of a Vector
- Dot Product and Angle Between Vectors
- 2×2 Determinant and Inverse
- Quadratic Equation
- Simultaneous Linear Equations
- Arithmetic Sequence
- Geometric Sequence
- GCD and LCM
- Prime Factorization
- Number and Sum of Divisors
- Base Conversion
- Power
- Logarithm
- Factorial
- Sum of Binomial Coefficients
- Mean
- Median
- Mode
- Weighted Mean
- Geometric Mean
- Harmonic Mean
- Range
- Quartiles and Interquartile Range
- Standard Deviation
- Sample Variance and Standard Deviation
- Coefficient of Variation
- Deviation Value (T-score)
- Z-score
- Covariance
- Correlation Coefficient
- Linear Regression (Least Squares)
- Permutations nPr
- Combinations nCr
- Combinations with Repetition nHr
- Circular Permutations
- Permutations with Repeated Items
- Expected Value
- Conditional Probability
- Bayes' Theorem
- Binomial Probability
- Mean and Variance of a Binomial Distribution
- Poisson Probability
- Normal Distribution Probability
- Normal Distribution Interval
- Confidence Interval for a Mean
- Confidence Interval for a Proportion
- One-sample t-test
- Two-sample t-test
- Paired t-test
- Chi-square Goodness-of-fit Test
- Chi-square Test of Independence
- Area of a Triangle
- Area of an Equilateral Triangle
- Area of a Square
- Area of a Rectangle
- Area of a Parallelogram
- Area of a Trapezoid
- Area of a Rhombus
- Area of a Circle
- Area and Arc Length of a Sector
- Area of a Circular Segment
- Area of an Ellipse
- Area of a Regular Polygon
- Circumference of a Circle
- Hypotenuse of a Right Triangle
- Circumradius and Inradius of a Triangle
- Volume of a Cuboid
- Volume of a Sphere
- Volume of a Cylinder
- Volume of a Cone
- Volume of a Frustum
- Volume of a Pyramid
- Volume of a Torus
- Surface Area of a Cuboid
- Surface Area of a Sphere
- Surface Area of a Cylinder
- Surface Area of a Cone
- Surface Area of a Frustum
- Surface Area of a Torus
- Force (Newton's Second Law)
- Work
- Power
- Kinetic Energy
- Potential Energy
- Momentum
- Hooke's Law
- Pressure
- Density
- Acceleration
- Uniformly Accelerated Motion
- Free Fall
- Projectile Motion
- Pendulum Period
- Voltage (Ohm's Law)
- Current (Ohm's Law)
- Resistance (Ohm's Law)
- Electric Power
- Electric Energy and Cost
- Resistors in Series
- Resistors in Parallel
- Capacitance of a Parallel Plate Capacitor
- Charge and Energy Stored in a Capacitor
- Capacitors in Series and Parallel
- Impedance of a Series RLC Circuit
- Resonant Frequency
- RC Time Constant
- Heat
- Thermal Expansion
- Carnot Efficiency
- Thermal Equilibrium Temperature
- Wave Speed
- Thin Lens Equation
- Snell's Law and the Critical Angle
- Photon Energy
- Buoyancy (Archimedes' Principle)
- Water Pressure at Depth
- Flow Rate and Velocity
- Moles and Mass
- Molar Concentration
- Mass Percent Concentration
- Dilution
- pH and Hydrogen Ion Concentration
- Neutralisation Titration
- Ideal Gas Law
- Gas Density and Molar Volume
- Tsubo to Square Metres
- Square Metres to Tsubo
- Tatami to Square Metres
- Building Coverage Ratio
- Floor Area Ratio
- Price per Tsubo
- Roof Pitch
- Ramp Gradient
- Stair Riser
- BMI (Body Mass Index)
- Basal Metabolic Rate (BMR)
- Calories Burned (METs)
- Body Fat Percentage Estimate
- Target Heart Rate (Karvonen Method)
- Units of Alcohol and Time to Clear
- Simple Interest
- Compound Interest
- Future Value of Regular Savings
- Loan Payment (Equal Instalments)
- How Much You Can Borrow
- The Effect of Making an Extra Loan Payment
- Effective Annual Rate
- Profit Margin and Cost Ratio
- Fuel Efficiency
- Length Unit Conversion
- Area Unit Conversion
- Volume Unit Conversion
- Weight Unit Conversion
- Force Unit Conversion
- Pressure Unit Conversion
- Energy Unit Conversion
- Power Unit Conversion
- Speed Unit Conversion
- Angle Unit Conversion
- Temperature Unit Conversion
- Data Size Unit Conversion
- Fuel Economy Unit Conversion