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Data & Calculators
1770 appsData & Calculators: Math Calculators
Sphere Radius from Diameter, Surface, Volume or Circumference
Sphere Radius from Diameter, Surface, Volume or Circumference. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.
Sphere Radius, Surface, Volume and Inverse-Length Ratio
Calculate sphere radius, surface, volume and inverse-length ratio with converted units, positive geometric inverses and explicit model limits.
Spherical Surface Area and Size Relationships
Calculate spherical surface area and size relationships with converted units, positive geometric inverses and explicit model limits.
Spiral Length Estimate & One-Turn Helix
Estimate a tightly wound planar spiral length, or calculate the length of one uniform helical turn around a cylinder.
Square Area and Positive Side Length
Calculate square area and positive side length with bidirectional inputs, compatible units and clear geometric assumptions.
Square Boundary Length and Diagonal
Calculate square boundary length and diagonal with bidirectional inputs, compatible units and clear geometric assumptions.
Square Diagonal and Positive Side Length
Calculate square diagonal and positive side length with bidirectional inputs, compatible units and clear geometric assumptions.
Square Pyramid Base, Single Face and Closed Surface
Square Pyramid Base, Single Face and Closed Surface. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.
Square Pyramid Capacity with Optional Surface Inputs
Square Pyramid Capacity with Optional Surface Inputs. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.
Square Pyramid Height from Seventeen Measurement Pairs
Square Pyramid Height from Seventeen Measurement Pairs. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.
Square Pyramid Surface, Slants and Positive Inverse Roots
Square Pyramid Surface, Slants and Positive Inverse Roots. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.
Square Side, Area, Perimeter and Diagonal
Calculate square side, area, perimeter and diagonal with bidirectional inputs, compatible units and clear geometric assumptions.
Standard Deviation Calculator
Calculate population and sample standard deviation, variance, mean, and count for a data set.
Statistics Calculator
Summarize a data set with centre, spread, variance, standard deviation, and sorted values.
Surface Area Calculator
Calculate total and lateral surface area for common solid shapes.
Taylor–Lagrange Remainder Upper Bound
Estimate a Taylor-polynomial remainder bound from degree, center, evaluation point and a valid maximum next-derivative magnitude.
Trapezoid Midsegment from Parallel Bases
Calculate trapezoid midsegment from parallel bases with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.
Trapezoidal Prism Side-Wall and Closed Surface Areas
Trapezoidal Prism Side-Wall and Closed Surface Areas. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.
Trapezoidal Prism Volume from Cross Section and Depth
Trapezoidal Prism Volume from Cross Section and Depth. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.
Triangle Angle Weights & Relative Side Ratios
Convert three positive angle weights into triangle angles and obtain relative side lengths through the sine rule.
Triangle Angles, Heron Area and Boundary from Three Sides
No. This SSS workflow accepts three side lengths and keeps area, perimeter and all three angles as read-only outputs. Other triangle workflows provide different supported inverses.
Triangle Area and Perimeter from Cartesian Vertices
No. The absolute determinant removes the orientation sign. Perimeter adds the three point distances. Collinear vertices return zero area, and repeated vertices are allowed as degenerate cases.
Triangle Area from Three Sides and Obtuse Inverse Branch
Calculate triangle area from three sides and obtuse inverse branch with converted units, positive geometric inverses and explicit model limits.
Triangle Area from Two Sides and Included Angle
Generally no. An acute angle and its obtuse supplement have the same sine and triangle area. The backward angle control returns the principal acute or right angle; area cannot exceed ab/2.
Triangle Base Recovered from Area and Altitude
Calculate triangle base recovered from area and altitude with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.
Triangle Calculator
Solve a triangle from three side lengths, including area, perimeter, angles, and classification.
Triangle Circumcircle, Inradius & Area
Calculate a triangle’s circumscribed circle and related geometry from three valid side lengths.
Triangle Exterior Angles and Supplementary Interiors
Enter two interiors, or an interior and a nonadjacent exterior. Adjacent interior/exterior angles are dependent supplements. Two exterior inputs populate the third exterior only in this retained solver.
Triangle Interior and Exterior Angle Relationships
No. Each exterior is the nonreflex supplement of its adjacent interior. Interiors sum to 180 degrees and these exteriors sum to 360 degrees. Enter two interiors or an interior plus a nonadjacent exterior for all fields; two exteriors produce only the third exterior.
Triangle Interior Angle Sum and Missing Angle
This tool uses planar Euclidean geometry. Curved-surface triangles can have a different interior angle sum.
Triangle Interior Angles: Find the Third
Find a missing interior angle of a plane triangle in degrees or radians.
Triangle Sides and Angles with Cosine-Law Root Selection
No. An angle, its opposite side and another side can describe two triangles. This workflow uses the captured plus-square-root side branch and rejects nonreal or nonpositive branches. It does not enumerate every alternative.
Triangle Sides and Area from Included Side and End Angles
Side a joins the vertices carrying β and γ. It lies opposite the computed angle α. The side lengths follow the sine law, and the area uses the included-angle triangle formula.
Triangle Sides and Area from Opposite Side and Two Angles
The height is perpendicular to side b, so area is b times that height divided by two. Side a lies opposite α; enter a, α and β. The remaining measures are read-only outputs.
Triangle Vertex Centroid and Missing Coordinate
Yes. Each axis averages three vertex coordinates. A missing coordinate equals three times the centroid coordinate minus the other two coordinates on that axis.
Triangular Dot Count and Positive Sequence Position
Enter a positive whole sequence position to find the sum of the first n positive integers, with conditional dot illustrations for positions one through eight.
Two-Binomial Product & Coefficient Working
Expand (a₁x + a₀)(b₁x + b₀) into quadratic, linear and constant coefficients, including the two cross-products.
Two-Number Sum & Missing Addend
Add two signed decimal numbers or find an unknown addend from the other number and the sum.
Unit Rate from Two Quantities
Divide one quantity by a nonzero second quantity, or recover a quantity from a known rate.
Volume Calculator
Find the volume and surface area of common three-dimensional shapes.
XY Point to Radius & Signed Polar Angle
Convert a point’s signed Cartesian coordinates to its distance from the origin and quadrant-aware direction.
XYZ & Spherical Coordinates: Radius, Polar Angle & Azimuth
Convert between Cartesian xyz and spherical coordinates using a polar angle from +z and an azimuth around the xy-plane.
Z-score Calculator
Standardize a value using a population mean and standard deviation, then estimate its percentile.
Data & Calculators: Financial Calculators
401K Calculator
Project employee and employer retirement contributions with annual growth and current-plan limits entered as assumptions.
70/20/10 Monthly Budget Allocation Model
Split entered after-tax income into an illustrative monthly 70%, 20% and 10% budget, with optional essentials categories.
Acquisition Goodwill Estimate Calculator
Compare purchase price with the fair value of net identifiable assets.
Actual vs Potential Output Gap Calculator
Express the difference between actual and potential GDP as a percentage.
Ad Click, Impression Cost & CTR Calculator
Compare CPC, CPM and click-through rate from one set of campaign totals.
Add or Remove VAT from a Price Calculator
Calculate a VAT-inclusive price or extract the pre-VAT amount using a supplied percentage.
Additional Income Savings Share Calculator
Find marginal propensity to save from income and saving changes.
Advertising Cost per Action Calculator
Connect campaign spend, clicks, cost per click and completed actions.
Advertising Funnel Costs & Repeat-Order Revenue
Connect impressions, clicks, leads and customers with campaign cost, revenue return and an explicit repeat-order revenue assumption.
After-Tax Operating Profit on Capital Calculator
Calculate ROIC using EBIT, an assumed tax rate and debt plus equity.
Amortization Calculator
Calculate an amortizing payment, first-month principal and interest, total interest, and payoff time.
Annual Capacity & Billing Rate Calculator
Model an hourly billing rate from annual salary, billable capacity and a multiplier.
Annual Coupon to Market Price Yield Calculator
Calculate coupon payments and bond current yield from face value and market price.
Annual Employer Cost per Productive Hour
Estimate annual employer cost, productive working hours and cost per productive hour from a five-day, 52-week pay model.
Annual Forward Rate from Two Spot Rates
Derive an annually compounded forward rate between two positive maturities from their zero-coupon spot rates.
Annual Hours, Pay & Flat Deduction Calculator
Convert an hourly rate and working schedule to annual earnings, with an optional assumed flat deduction.
Annual Pay & Flat-Deduction Income Calculator
Estimate annual gross pay and income after an entered flat deduction rate from hourly pay and a work schedule.
Annual Pay from Hourly Rate & Entered Deductions
Estimate yearly pay from hourly rate, paid hours and paid weeks, with a user-entered flat deduction assumption and reverse calculations.
Annual Rent & Leasing Fee Comparison Calculator
Compare leasing fees expressed as half a month, one month, one and a half months, or a percentage of annual rent.
Annual Salary Growth & Remaining Earnings
Sum modeled annual salary from the current age to a selected retirement age with a constant annual salary change.
Annual Salary to Hourly Pay — Five-Day Model
Convert annual salary into hourly, daily, monthly, biweekly, minute and second equivalents using entered weekly hours.
Annualized Dividend Yield & Payment Frequency
Calculate dividend yield from per-period dividends and annual, semiannual, quarterly or monthly payment frequency.
Annualized Growth & Monthly/Quarterly Equivalents
Annualize a total return or beginning and ending values over a positive holding period, with compound monthly and quarterly equivalent rates.
Annuity Calculator
Calculate the future value of regular deposits with optional starting principal and compound return.
Annuity Payout Calculator
Estimate a level monthly payout from an annuity balance, interest rate, and payout term.
Approximate Bond Yield to Call
Estimate callable-bond yield using annual coupon income and average price, with an explicit approximation rather than a cash-flow IRR.
Approximate Real Rate After Inflation
Subtract an inflation rate from a nominal rate to estimate the inflation-adjusted rate over the same period.
APR Calculator
Estimate annual percentage rate from amount received, monthly payment, term, and prepaid finance charges.
Asset Profitability & ROA Calculator
Calculate return on assets from net income and the asset value you choose.
Assets-to-Equity Multiple Calculator
Divide total assets by equity to find an equity multiplier.
Auto Lease Calculator
Estimate a vehicle lease payment from capitalized cost, residual, money factor, term, tax, and upfront reductions.
Auto Loan Calculator
Estimate vehicle financing from purchase price, trade-in, down payment, sales tax, fees, and loan terms.
Average Monthly Income & Work Schedule
Estimate average monthly earnings from hourly, daily, weekly or annual gross pay and an adjustable work schedule.
Average Return Calculator
Calculate arithmetic average, compounded annual growth rate, and cumulative return from periodic percentages.
Balance Daily Interest on a 365-Day Year Calculator
Estimate one day of simple interest from a balance and annual rate.
Balance-Sheet & Cash-Flow Accrual Ratios
Compare balance-sheet changes or the difference between earnings and cash flows with average net operating assets.
Balloon Loan Payment & Remaining Principal
Estimate monthly payments on a longer amortization schedule and the remaining principal due at an earlier balloon date.
Bank & Book Balance Reconciliation
Adjust bank and cash-book balances for outstanding checks, deposits in transit, collections, fees and interest, then compare the balances.
Basic Earnings per Common Share Calculator
Estimate basic EPS after preferred dividends.
Beta-Based Required Return Calculator
Evaluate the CAPM return model from beta and benchmark returns.
Billable Time & Fee Calculator
Calculate a fee from billed time and a rate, or solve for the time or rate.
Boat Loan Calculator
Estimate payment and total interest for a fixed-rate boat or marine loan.
Boat Loan Payment & Total Interest Estimate
Estimate fixed monthly boat-loan payments and interest using the rate entered, including exactly zero interest.
Bond Calculator
Calculate a fixed-coupon bond price and current yield from face value, coupon, market yield, maturity, and payment frequency.
Bond Coupon Payment & Current Yield Calculator
Calculate a regular bond coupon and, in a separate section, current yield from annual coupon cash and market value.
Bond Face Value & Coupon Rate Calculator
Relate annual coupon rate, payment frequency and coupon amounts.
Bond Yield Spread in Basis Points Calculator
Subtract a government benchmark yield from a corporate yield.
Bradford Absence Index from Spells & Days
Calculate the arithmetic Bradford index from absence spells and total absent days, with neutral numerical bands and explicit limits.
Break-Even Sales & Revenue Calculator
Find the sales quantity and revenue that cover fixed and variable costs.
Budget Calculator
Summarize monthly income, needs, wants, savings, and remaining cash with a 50/30/20 comparison.
Business Funding Gap Calculator
Estimate additional funding from changes in assets, liabilities and retained earnings.
Business Loan Calculator
Estimate business-loan payment, borrowing cost, fees, and payoff with optional extra principal.
Buyer Price Gap & Linear-Demand Surplus
Compare willingness to pay with an actual price, and estimate the triangular surplus under a linear demand curve.