Browse All Calculators

Monthly payment, total interest, amortization schedule

P&I, taxes, insurance, PMI breakdown

Monthly car payment with trade-in and full amortization

Standard, graduated, and income-based repayment plans

Investment growth with contributions and compounding frequency

Future value of regular deposits with compound interest

Interest and total for simple interest loans

Portfolio growth with lump sum and monthly contributions

Projected nest egg and monthly income at retirement

Balance at retirement including employer match

Months to payoff and total interest with live APR

Purchasing power over time using live BLS CPI data

Equated monthly installment with amortization schedule

2024 US federal income tax with bracket breakdown

Tax amount and total for all 50 US states

Sale price, savings, and stacked discount rate

Hourly, monthly, annual salary with take-home pay

Convert between 20+ world currencies with live rates

Tip amount and bill split for any group size

Percent of, percent change, and percent difference

Return on investment, profit, and annualized CAGR

Annual percentage rate including fees and points

Full amortization schedule with extra payment savings

50/30/20 budget plan from monthly income

Down payment, PMI, closing costs, and savings timeline

Max home price and payment using the 28/36 debt-to-income rule

Monthly savings, break-even point, and total interest vs your current loan

Snowball vs avalanche payoff strategy comparison

Total assets minus liabilities, with net worth by age benchmarks

Take-home pay after federal tax, FICA, and deductions

Retirement balance projection with tax-free growth

Monthly lease payment from price, residual value, and money factor

Time and interest saved by paying extra toward your mortgage

Add or remove VAT from any price instantly

LTV ratio and PMI threshold from loan amount and property value

Profit margin and markup from cost and revenue, or price from a target margin

Body Mass Index with gauge, category, and healthy weight range

Daily calorie needs (TDEE) with macro targets by goal

Total daily energy expenditure with activity multiplier

Basal Metabolic Rate using Mifflin-St Jeor

Estimate body fat % using the U.S. Navy Method

Ideal body weight using Devine, Robinson, Miller, and Hamwi formulas

Daily protein intake by weight, activity, and goal

Protein, carbs, and fat grams from calorie target

40+ activities with MET values and food equivalents

Exact age in years, months, days plus next birthday

Pregnancy due date from last menstrual period

Ovulation date and fertile window from cycle length

12-month period prediction with cycle phase detection

Heart rate zones by age, plus the Karvonen method

Running pace, finish time, or distance for any race

IOM-recommended weight gain range by pre-pregnancy BMI

How far along you are, your trimester, and baby size by week

Estimated conception date and window from due date or LMP

BMI percentile for kids and teens by age and sex

Blood alcohol content estimate with time back to zero

Predict a child's adult height from parents or current age

Percent of, percent change, and percent difference

Add, subtract, multiply, divide fractions

Trig, logs, exponents, and scientific notation

Mean, median, mode, standard deviation, and variance

Solve linear and quadratic equations

Area, perimeter, volume for common shapes

Plot y=f(x) functions with zoom and pan

Semester and cumulative GPA on a 4.0 scale

Simple mean and weighted average from a list of numbers

Simplify ratios, scale, and solve proportions

Greatest common factor and least common multiple with prime factorization

Solve any triangle for sides, angles, area, and perimeter

Single event, AND/OR, combinations, and permutations

Convert binary, octal, decimal, hex, and do binary arithmetic

Z-score, percentile, and probability from a normal distribution

Slope, line equation, distance, and midpoint from two points

Generate random integers or decimals, with or without repeats

Prime factors and factor tree for any integer

Margin of error and confidence interval bounds from sample data

Add, multiply, and find determinant, inverse, and transpose for 2x2/3x3 matrices

Score needed on your final exam to hit your target grade

Newton's Second Law — solve for force, mass, or acceleration

Density, mass, or volume with a common material reference table

KE = ½mv² — solve for kinetic energy, mass, or velocity

Range, max height, and time of flight from velocity and launch angle

P = F/A with results in Pa, kPa, atm, psi, and bar

Molar concentration and dilution (C1V1=C2V2) for chemistry

Trig, logs, exponents, and scientific notation

Voltage, current, resistance, and power from any two known values

Output voltage and current for a two-resistor divider circuit

Torque from force, lever arm length, and angle

Gear ratio, output speed, and torque multiplication from teeth counts

Max deflection and bending moment for a simply supported beam

Stress, strain, and Young's Modulus from force, area, and length change

Cubic yards and bags needed for slabs, columns, and footings

Exact age in years, months, days plus next birthday

Days, weeks, months between two dates

Calculate time between two times of day

Pregnancy due date from last menstrual period

Convert time between UTC offsets for 30+ major cities

Convert between 20+ world currencies with live rates

Miles, km, feet, meters, inches, and more

Pounds, kg, oz, grams, stones, and more

Celsius, Fahrenheit, and Kelvin

Square feet, square meters, acres, hectares, and more

Liters, gallons, cups, cubic meters, and more

m/s, km/h, mph, knots, and Mach

Bits, bytes, KB, MB, GB, TB, and PB

Days, weeks, months between two dates

Calculate time between two times of day

Cups, tablespoons, and grams for common ingredients

Tip amount and bill split for any group size

Exact age in years, months, days plus next birthday

Percent of, percent change, and percent difference

Sale price, savings, and stacked discount rate

Tax amount and total for all 50 US states

Convert between 20+ world currencies with live rates

Body Mass Index with gauge, category, and healthy weight range

Daily calorie needs (TDEE) with macro targets by goal

Points-based and weighted final grade with letter grade

Trip fuel cost and gas mileage (MPG) from a fill-up

Best bedtime or wake-up time by 90-minute sleep cycles

Room area for multiple rooms plus flooring and paint estimates

Daily and weekly hours worked from start/end times

Cubic yards and bags needed for slabs, columns, and footings

Weekly hours, overtime, and pay from daily clock in/out times

Gallons and liters for rectangular, round, or oval pools