CD Calculator
Certificate of deposit maturity value, APY and early withdrawal.
Calculators
Everyday maths, money and measurements, worked out for you.
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Interest Rate Calculator
The rate implied by an amount, a payment and a term.
Refinance Calculator
Whether refinancing pays, and how long it takes to break even.
Running Pace Calculator
Race finish times, split tables and a predictor for other distances.
Body Surface Area Calculator
BSA by the Du Bois, Mosteller, Haycock and Boyd formulas.
Interest Calculator
Compare simple and compound interest on the same figures side by side.
Pregnancy Weight Gain Calculator
Recommended weight gain by week, from your starting BMI.
Prime Factorization Calculator
Prime factors, exponent form and a factor tree.
Sample Size Calculator
How many people you need to survey, and the margin of error.
Density Calculator
Density, mass or volume, solving for whichever is missing.
Sleep Calculator
Bedtimes and wake times that land between sleep cycles.
Take-Home-Paycheck Calculator
What actually lands in your account after every deduction.
IRR Calculator
Internal rate of return and NPV from any cash flow series.
Body Type Calculator
Body shape from bust, waist and hip measurements.
Height Calculator
Convert height between units and predict a child's adult height.
BMR Calculator
Basal metabolic rate: the calories you burn doing nothing at all.
Number Sequence Calculator
Arithmetic, geometric and Fibonacci terms and sums.
Heat Index Calculator
Apparent temperature from heat and humidity, with risk levels.
Engine Horsepower Calculator
Estimate engine power from quarter-mile trap speed or ET.
IRA Calculator
Traditional against Roth, compared on an after-tax basis.
Target Heart Rate Calculator
Training zones from maximum or heart rate reserve.
Body Fat Calculator
Estimate body fat percentage from tape measurements.
Investment Calculator
Project a portfolio with contributions, growth and inflation adjustment.
Common Factor Calculator
Shared factors of two or more numbers, with the highest marked.
Half-Life Calculator
Half-life, decay constant, mean lifetime and remaining amount.
Bandwidth Calculator
Download time, data usage and the speed you need.
Personal Loan Calculator
Payment and true cost including origination fees.
Canadian Mortgage Calculator
Canadian mortgage with semi-annual compounding and CMHC insurance.
Circle Calculator
Solve a circle from radius, diameter, circumference or area.
Weight Calculator
Convert weights and work in stones, pounds and ounces.
Countdown Calculator
A live countdown to any date, ticking down to the second.
Markup Calculator
Set a selling price from cost plus markup, with the margin shown.
EMI Calculator
Equated monthly instalment with a principal and interest breakdown.
P-value Calculator
P-values from a z, t, chi-square or F statistic.
Surface Area Calculator
Surface area of ten solids, with the formula shown.
Mulch Calculator
Mulch in cubic yards and bags for any bed depth.
Pension Calculator
Defined benefit income, and whether to take the lump sum.
Rent vs. Buy Calculator
Which costs less over your time horizon, renting or owning.
Calories Burned Calculator
Calories burned by activity, using published MET values.
Percent Error Calculator
Percent error, absolute error and relative error together.
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