We are working on building a calculator for every computation life throws at you - from the serious to the whimsical.
Convert between HbA1c percentage and estimated average glucose (eAG) levels for better diabetes management.
Estimate your absolute neutrophil count (ANC) using white blood cell data to understand your immune status.
Complete the short ASRS questionnaire to screen for adult attention deficit hyperactivity disorder.
Estimate the comfort of an airplane seat based on pitch, passenger height, and recline. Plan flights with more legroom.
Calculate the anion gap from electrolyte values to evaluate metabolic acidosis risk.
Calculate a newborn's APGAR score from appearance, pulse, grimace, activity, and respiration values.
Numerically integrate the arc length of a function between two points.
Compute the arithmetic-geometric mean of two positive numbers and learn its surprising connections to elliptic integrals and fast numerical algorithms.
Assess alcohol consumption risk with the AUDIT questionnaire to screen for harmful drinking.
Check if your new furniture will fit before you buy. Enter room and item dimensions to calculate remaining space.
Evaluate B-spline basis functions for given knots, degree, and parameter.
Predict how a colony of bacteria expands over time. Enter the starting population, growth rate, and time to see the final count using an exponential model.
Score the Beck Depression Inventory-II questionnaire and interpret severity of depressive symptoms.
Compare your current packaging expenses with biodegradable alternatives and see the cost premium per unit.
Approximate a root of a continuous function on a given interval using the bisection method.
Determine your blood pressure category and see your mean arterial pressure. Enter systolic and diastolic readings to understand where you stand.
Find the incidence angle where reflected light becomes perfectly polarized. Calculate using the refractive indices of two media.
Calculate exactly how much salt and sugar to use in your brine for meats and vegetables. Achieve consistent flavor every time.
Rate software bugs by severity, user impact and effort. Use this Bug Fix Priority Score Calculator to decide which issues to address first.
Calculate the ratio of blood urea nitrogen to creatinine to help evaluate hydration status and possible kidney issues.
Answer short questions to gauge your risk of job burnout and evaluate potential interventions.
Compute points on a Bézier curve using De Casteljau's algorithm.
Answer four yes or no questions to evaluate potential alcohol misuse using the CAGE screening tool.
Measure the difference between required skills and your current abilities. Plan your professional development with a clear skills gap score.
Calculate weekly study hours needed to prepare for a professional certification exam by your target date.
Estimate stroke risk in atrial fibrillation using the CHA2DS2-VASc score.
Compute Chebyshev polynomials of the first kind for a given degree and value.
Determine the indoor and outdoor space needed for your flock so chickens stay healthy and productive.
Estimate Child-Pugh class for liver disease using bilirubin, albumin, INR, ascites, and encephalopathy levels.
Find an integer solution for simultaneous congruences using the Chinese remainder theorem.
Estimate cardiovascular risk by comparing your total cholesterol to HDL levels and reviewing guideline-based classifications.
Add, subtract, multiply, and divide complex numbers with magnitude and angle output.
Find the ideal carbon to nitrogen ratio for your compost pile. Input amounts of green and brown materials to get instant feedback on how to reach the recommended 30:1 ratio.
Estimate the overall moisture content of your compost by weighting green and brown materials.
Estimate how long it takes for kitchen scraps and yard waste to turn into usable compost. Enter pile size, temperature and moisture to forecast decomposition time.
Generate the continued fraction representation of any real number.
Use Cramer's rule to solve small linear systems with determinants.
Find the critical angle for total internal reflection when light travels from a denser to a rarer medium.
Build a natural cubic spline through a set of data points and evaluate it.
Determine recommended daily fiber grams based on caloric intake and track your meals against that goal.
Track sugar grams from meals and drinks throughout the day and compare with recommended limits.
Estimate the likelihood of a data breach by entering workforce size, training frequency, security spending, and past incidents. Explore tips to reduce risk.
Plan how many focused sessions you need to complete a project. Input total hours, session length, and break time.
Compute near and far focus distances plus total depth of field using aperture, focal length, subject distance, and sensor size.
Estimate your risk of developing type 2 diabetes by entering basic health information and lifestyle factors.
Find the shortest path between two nodes in a small graph using Dijkstra's algorithm.
Calculate dimensional weight for parcels using length, width, height, and carrier divisors. Avoid shipping surprises by understanding how couriers charge for large yet lightweight packages.
Compute the DCT-II of a numeric sequence to analyze signal frequencies.
Compute one-level Haar discrete wavelet transform for a numeric sequence.
Approximate the value of a double integral over a rectangular region.
Find the ideal water to flour ratio for any bread recipe using this simple dough hydration calculator.
Estimate drought severity using monthly rainfall compared with historical averages.
Find all complex roots of a polynomial using the Durand–Kerner method.
Assess postpartum depression symptoms using the 10-question Edinburgh scale.
Calculate the area and approximate perimeter of an ellipse from its axes.
Estimate the overall value of an esports roster by summing player ratings, salaries, and team synergy.
Generate the Farey sequence of a given order n.
Apply the Cooley-Tukey FFT to a sequence of numbers to reveal frequency components.
Estimate your daily FODMAP load from common food groups to help manage irritable bowel syndrome.
Compute a truncated Fourier series for a function on [-π, π] to study periodic behavior.
Estimate the fractal dimension from the number of pieces and scaling ratio.
Simplify fractions or calculate addition, subtraction, multiplication, and division with this browser-based fraction calculator. Perfect for students, teachers, and anyone working with ratios.
Calculate reflection coefficients for s- and p-polarized light when it strikes an interface between two media with different refractive indices.
Estimate the radius of the first Fresnel zone for radio links to evaluate obstruction effects.
Convert fructosamine lab results into estimated average glucose or reverse the calculation using validated formulas.
Answer seven questions to calculate your Generalized Anxiety Disorder (GAD-7) score and understand severity levels.
Perform Gauss-Jordan elimination on a 2x2 or 3x3 system to reach reduced row-echelon form and solve for unknowns.
Solve 2x2 or 3x3 linear systems using the Gauss-Seidel iterative algorithm.
Apply the Gaussian elimination method to solve 2x2 or 3x3 linear systems.
Average multiple DNA test percentages to create a combined ancestry profile and calculate a diversity score.
Estimate the glycemic load of your meals using glycemic index and carbohydrate grams.
Perform the Gram-Schmidt process on a set of 2D or 3D vectors to obtain an orthonormal basis.
Calculate the ventilation needs of your greenhouse based on its dimensions and air changes per hour. Optimize plant health with adequate airflow.
Approximate the zero-order Hankel transform of a radial function using numerical integration.
Compute the discrete Hartley transform of a sequence and explore its relationship to the Fourier transform.
Estimate major bleeding risk in atrial fibrillation patients using the HAS-BLED scoring method.
Construct a cubic Hermite interpolant through two points with specified derivatives.
Estimate how steep a hike will feel by comparing elevation gain to distance or time. Enter trail stats to gauge difficulty.
Compute the discrete Hilbert transform of a sequence to build an analytic signal and study amplitude and phase.
Estimate your insulin resistance using fasting glucose and insulin levels with the HOMA-IR formula.
Scale your homebrew recipes up or down by entering the original batch size and ingredient amounts.
Determine how much light your indoor plants need. Enter plant type and window direction to see recommended placement and care tips.
Estimate rapid-acting insulin doses using carb counts, current blood glucose, and correction factors.
Estimate your insulin sensitivity factor (ISF) using your total daily dose and the 1800 rule to fine tune correction boluses.
Design a personalized intermittent fasting schedule by selecting a fasting duration and start time.
Determine when to reorder products by calculating the optimal inventory reorder point using demand, lead time, and safety stock.
Decompose simple rational expressions and compute the inverse Laplace transform.
Approximate solutions of 2x2 or 3x3 linear systems using the Jacobi iterative algorithm.
Perform a single Kalman filter prediction and update step for a scalar state.
Perform the nonparametric Kruskal-Wallis test on three or more samples and understand the ranking method behind it.
Compute the Lagrange interpolating polynomial that passes through a set of points.
Use Lagrange multipliers to locate extrema of a function subject to an equality constraint.
Compute generalized Laguerre polynomials for given order and variable, with context on orthogonality and series forms.
Compute the Lambert W function numerically using Newton iterations.
Compute the Laplace transform of basic functions to study differential equations and control systems.
Expand rational functions into a Laurent series around a point.
Compute Legendre polynomials of arbitrary degree and evaluate them at a point.
Compute the Legendre transform of a convex function at a given slope.
Compute medication dosage using patient weight and drug concentration. Always consult a healthcare professional before use.
Estimate the cumulative stress reduction from maintaining a meditation streak. Enter session length and frequency to see your progress.
Estimate the Model for End-Stage Liver Disease (MELD) score from lab values to gauge transplant urgency.
Compute a simple Mellin transform using numerical integration, with an overview of its applications in analysis.
Track your intake of key vitamins and minerals and compare against recommended daily allowances.
Generate a schedule of quick mindfulness breaks to reduce stress and boost focus. Enter your work hours, break length, and frequency.
Compute the Minkowski distance between two points in 2D or 3D for any positive p.
Screen for bipolar disorder symptoms using the Mood Disorder Questionnaire and interpret the results.
Use the Möbius function to invert summatory functions of arithmetic sequences.
Compute Möbius transformations of complex numbers.
Track net carbohydrate intake by subtracting fiber and sugar alcohols from total carbs. Useful for ketogenic or low-carb diets.
Find a root of a function using the Newton-Raphson iteration method.
Determine non-HDL cholesterol by subtracting HDL from total cholesterol and learn why this number matters.
Estimate how many days a sailing voyage will take based on distance, boat speed, and daily sailing hours.
Calculate your daily omega-3 to omega-6 intake ratio and learn why this balance is important for health.
Generate Padé approximants for a given function using series coefficients.
Decompose simple rational expressions into partial fractions for easier integration.
Perform principal component analysis on a small dataset to visualize directions of maximum variance.
Answer 20 questions to compute your PCL-5 score and gauge potential PTSD severity.
Complete the 10-question Perceived Stress Scale survey to gauge how stressful you find situations in your life.
Calculate your PHQ-9 depression score to understand symptom severity and discuss results with a professional.
Compute the greatest common divisor of two polynomials using the Euclidean algorithm.
Perform basic quaternion arithmetic including multiplication, conjugation, and magnitude.
Compute the Radon transform of a 2D function at a chosen angle and offset.
Apply the rational root theorem to polynomial coefficients and discover all possible rational zeros.
Estimate integrals using left, right, or midpoint Riemann sums.
Compute numerical approximations of the Riemann zeta function for s>1.
Estimate how much daily sunlight you should seek based on latitude and time of year to help manage Seasonal Affective Disorder.
Answer a brief questionnaire to estimate your risk of seasonal affective disorder and explore strategies for brighter moods.
Determine the azimuth and elevation angles needed to align a satellite dish toward a specific satellite.
Answer five SCOFF questions to evaluate possible symptoms of anorexia or bulimia and decide if you should seek professional advice.
Estimate basic decompression stop times for recreational dives using depth and bottom time.
Approximate a root of a function using the secant iteration method.
Estimate the storage unit size you need based on household items and box count. Learn tips for packing efficiently and saving money on self storage.
Determine how much fabric you need for a sewing pattern. Input piece dimensions, fabric width, and seam allowances to calculate yardage.
Solve 2-variable linear programs using the simplex method.
Use Simpson's rule to estimate the integral of a function on an interval.
Determine the refracted angle when light passes between materials with different indices of refraction using Snell's Law.
Determine how much lye and water to use for your homemade soap. Adjust for superfat percentage and oil weight to create reliable recipes.
Determine the exact flour and water needed to feed your sourdough starter for consistent growth and flavor.
Calculate when your spices expire based on type and purchase date, and get tips for storing them longer.
Evaluate your mental tension with our Stress Level Calculator. Rate common stress factors and discover tips for managing stress.
Find the area of a superellipse described by |x/a|^n + |y/b|^n = 1.
Generate the Taylor series of a mathematical function around a point to any order.
Calculate image distance and magnification using the thin lens formula and object height.
Calculate the ratio of triglycerides to HDL cholesterol to evaluate cardiovascular risk.
Determine how many volunteers you need for an event based on tasks, shift length, and expected attendance. Create a smooth schedule.
Estimate your risk of motion sickness when using a VR headset. Enter session length, frame rate, field of view, and your personal sensitivity.
Compute the Walsh-Hadamard transform of a sequence using a fast butterfly algorithm.
Estimate a new weekly warfarin dose based on current INR and target INR. Always consult your clinician before changing medications.
Compute a weighted moving average of a numeric series for forecasting and trend analysis.
Use the Wells score calculator to evaluate the probability of deep vein thrombosis by selecting common clinical criteria.
Enter rise height and preferred slope ratio to compute a wheelchair ramp length that meets accessibility guidelines. Learn how ramp angle, materials, and landings affect usability.
Compute the Wilcoxon signed-rank test for matched pairs and learn how it evaluates median differences.
Calculate a simple diversity score for your organization using employee counts across demographic groups.
Find out how large your worm composting bin should be based on household food scraps and worm count. Get tips on bedding materials and maintenance.
Evaluate obsessive-compulsive disorder severity with the 10-item Y-BOCS questionnaire.
Determine Young's modulus from applied force, cross-sectional area, and elongation. Explore the relationship between stress and strain.
Compute the Z-transform of a finite sequence at a complex point.