Online Calculation Tools

Calculates VAT and total based on VAT-inclusive or exclusive amounts.

Calculates the neutralization status, remaining concentration, and pH when acid and base solutions are mixed.

Calculate required grass seed amount in lbs, kg, oz and grams based on area and application type. Suitable for new lawns, overseeding, high-traffic areas and shade-tolerant use cases.

Calculate curvature drop, horizon distance, hidden height and additional spherical geometry values for a given distance.

Calculate feels-like temperature from actual temperature, humidity and wind speed. Uses heat index in hot conditions and wind chill in cold conditions.

Calculate the cost per GB, TB and MB from total price and storage capacity. Useful for comparing SSDs, HDDs, USB drives, cloud storage and hosting plans.

Calculates annual leave pay based on salary and unused days.

Calculates fuel consumption per 100 km and trip cost.

Calculates the land share ratio of a flat based on total land area and flat sizes.

Calculates EV charging time and cost.

Calculates menstrual cycle, ovulation date, and fertile window based on last period date.

Determines your generation based on birth year.

Converts between Gregorian and Hijri calendar dates.

Calculates area in square meters for various room shapes.

Calculates credit card installment payments with interest.

Plans travel budget with accommodation, food, and transport.

Calculates loan origination fees and total cost.

Calculates the pH of a buffer solution from weak acid and conjugate base using the Henderson–Hasselbalch equation.

Calculates the pH–volume curve and equivalence point for strong acid–strong base titrations. Suitable for systems like HCl–NaOH.

Calculates pH of a weak acid using Ka and ICE table.

Calculates daily carbohydrate needs with a nutrition guide.

Calculates distance from the area under a velocity-time graph.

Calculates the resulting concentration when two solutions containing the same solute are mixed together.

Calculates the stock volume required and solvent to add when preparing a diluted solution of a desired concentration and volume from a stock solution.

Calculates total personnel cost with detailed payroll breakdown.

Calculates freelancer invoice with taxes and deductions.

Calculates exponents and logarithms.

Calculates the break-even point, margin of safety and profit using fixed costs, variable costs and unit selling price.

Calculates cash conversion cycle from inventory, receivable, and payable days.

Calculates interest difference and effective rate for installment sales.

Calculates period, frequency and the x–v–a time table of simple harmonic motion from spring constant, mass and amplitude.

Compute impact time, impact speed, maximum height and a time–position–velocity table from initial height and velocity.

Finds time difference between countries and time zones.

Calculates rental income withholding tax, net rent, and effective yield.

Given radius and one known quantity (v, ω, frequency, or rpm), calculates all fundamental rotational motion quantities and centripetal acceleration.

Calculates post-collision velocities and energy change for elastic or perfectly inelastic 1D collisions between two objects.

Calculates work, power, or time using the formula P = W / t.

Calculates projectile motion parameters (range, max height, time) from initial velocity, angle, and height.

Enter slope (m) and y-intercept (b) to plot y = mx + b. Instantly see the x-intercept, a value table and the graph.

Calculates momentum, kinetic energy, and unit conversions.

Plots logarithmic functions with custom parameters.

Plots absolute value functions with custom parameters.

Solves absolute value equations and inequalities.

Solves any triangle using SSS, SAS, ASA, or AAS.

Plots piecewise functions with breakpoints.

Plots polynomial functions and finds real roots.

Calculates area under a curve using the trapezoidal rule.

Calculate the distance between two coordinates from latitude and longitude in kilometres, miles and nautical miles, with bearing and midpoint details.

Plots a function with its derivative and integral.

Calculates acceleration from the slope of a velocity-time graph.

Plots sine/cosine functions with amplitude, period, and phase.

Plots parabola with vertex, roots, and axis of symmetry.

Calculates force, mass, or acceleration using F = m·a.

Enter wavelength (λ) or frequency (f). Calculate the frequency and photon energy of light, and view the result on a chart.

Converts between moles and mass using molar mass.

Calculates pH/pOH from H+ or OH- concentration.

Calculates mass or volume percentage concentration.

Creates scatter/line charts from X-Y data values.

Calculates moles, mass, and particle count (n = m / M).

Calculates notice period and severance pay in detail based on gross salary and work duration.

Calculates part-time salary based on working hours.

Calculates salary with bonus/commission components.

Calculates annual total employer cost for an employee.

Finds your zodiac sign based on your birth date, along with your element, ruling planet, day of the week you were born, and days until your next birthday. Provides a detailed profile with tips and personalised advice.

Calculates your Moon sign based on birth date, time and location, and provides detailed interpretation, cautions and suggestions.

Numerically approximates limits and series sums.

Calculates net salary after a percentage raise.

Converts hourly wage to monthly salary.

Calculates credit-weighted grade point average.

Calculates speed, distance, or time given the other two, with table and chart.

Validates TR IBAN numbers using mod 97, formats them, and identifies the bank.

Calculates simple interest over a given period.

Calculates compound interest with periodic compounding.

Calculates matrix determinant and inverse for 2x2 and 3x3.

Enter your birth date to discover your Chinese month sign based on solar term (节气) boundaries. Explore character, relationship and career insights.

Solves 2×2 and 3×3 systems of linear equations.

Enter a function f(x) to compute a numerical derivative or numerical integral and view the method steps.

Converts between net and gross salary with TR payroll deductions.

Estimates 10-year cardiovascular risk using the Framingham model.

Calculates net profit and break-even selling price by accounting for purchase cost, VAT, platform commission, shipping, packaging, and advertising.

Calculates the required BTU for an air conditioner based on room size.

Calculates percentage increase or decrease of a value.

Calculates the number of days between two dates.

Calculates the amount and rate of increase or decrease between two prices.

Solve a right triangle from two legs, one leg + hypotenuse, or one leg + angle. Instantly find all sides, both angles, area, perimeter and trigonometric ratios.

Calculates approximate ALES score based on correct and wrong answers.

Calculates arithmetic mean from a list of numbers.

Calculates profit amount and margins from cost and selling price.

Calculates withholding tax from gross amount.

Calculate the stamp tax payable on contracts and official documents by entering the amount and per-thousand rate.

Calculates unknown value using direct or inverse proportion.

Calculates GCD and LCM of two integers using the Euclidean algorithm, with prime factorizations and step-by-step breakdown.

Solves ax² + bx + c = 0: finds roots, discriminant, vertex, axis of symmetry, and factored form.

Calculates mean, median, standard deviation, and variance.

Calculates approximate TYT placement score from net answers and GPA.

Calculates area and perimeter for various geometric shapes.

Calculates volume and surface area for sphere, cylinder, and box.

Calculates combinations, permutations, and factorials.

Converts between length, weight and temperature units.

Estimates daily water intake based on body weight.

Calculates BMI based on height and weight, with classification.

Calculates Basal Metabolic Rate and Total Daily Energy Expenditure using the Mifflin-St Jeor formula.

Calculates waist-to-hip ratio and evaluates health risk.

Enter the first term, common difference/ratio and number of terms to find the n-th term, total sum and a cumulative-sum table for arithmetic or geometric sequences.

Estimates body fat percentage using the US Navy method.

Calculates semester average from midterm and final grades.

Determines if student qualifies for honor/merit certificate.

Calculate your course average from written exams, projects and class participation. See your letter grade, pass/fail status and points needed to pass.

Calculates approximate KPSS score from net correct answers.