All calculators
Every Calcist calculator in one place.
Math calculators
Scientific calculatorsin, cos, logs, powers, roots and more, with a history you can edit.Basic calculatorA simple four-function calculator with a running tape.Fraction calculatorAdd, subtract, multiply and divide fractions and mixed numbers, with steps.Decimal to fractionTurn decimals into fractions, fractions into decimals, and simplify.Percentage calculatorPercent of a number, what percent, percent change and more.Equation solverSolve for x in linear and quadratic equations, step by step.System of equationsSolve 2 or 3 equations with 2 or 3 unknowns, with working.Pythagorean theoremFind the missing side of a right triangle.Slope calculatorRise over run, the line's equation, angle and distance.Hyperbolic functionssinh, cosh, tanh and their inverses, with formulas.Average calculatorMean, median, mode, range and standard deviation.
Money calculators
How long will my money last?See how many years your savings last with regular withdrawals.Compound interest calculatorGrowth with monthly deposits, daily to yearly compounding.Interest calculatorSimple or compound interest on a deposit or loan.Future value calculatorWhat money and regular payments grow to (TVM).Savings goal calculatorHow much to save each month to reach a target.Mortgage calculatorMonthly payment with tax, insurance and PMI, plus what-if rates.Loan calculatorPayment and interest on car, personal and student loans.Profit margin and markupMargin, markup and the price for a target margin.Break-even calculatorHow many sales cover your costs, with a profit target.Online seller profitProfit per sale after marketplace fees, shipping and ads.Ad campaign calculatorCTR, CPC, CPM, cost per sale and ROAS from your ad numbers.
Home project calculators
Concrete calculatorCubic yards and bags for slabs, footings and posts.Paint calculatorGallons of paint for a room, after doors and windows.Flooring and tile calculatorSquare feet and boxes, with extra for cuts.Drywall calculatorSheets, mud, tape and screws for a room.Roofing calculatorRoof area, squares and shingle bundles from pitch.
Everyday calculators
Tip calculatorTip and split the bill, with round-up.Discount calculatorSale price, savings, stacked discounts and the original price.Grade calculatorWeighted average of your scores and the letter grade.Final grade calculatorThe score you need on the final exam.Build your own calculatorMake a custom calculator with your own inputs and formulas.Unit converterLength, weight, volume, temperature, speed, data and more.