All calculators

Estimate your monthly mortgage payment, total interest and payoff cost in seconds.

Work out monthly repayments, total interest and payoff totals for any loan.

See how savings grow with compounding and regular monthly contributions.

Find out how long it takes to reach a savings goal at your current pace.

Add or remove VAT at any rate and see the net, tax and gross amounts.

Calculate sales tax on any purchase and the final checkout total.

Convert an annual salary into monthly, weekly and hourly take-home pay.

Measure return on investment, net profit and annualised ROI for any project.

Calculate gross margin, markup and profit from cost and selling price.

Find how many units you must sell to cover fixed and variable costs.

Work out sale price, amount saved and effective discount instantly.

Calculate sales commission, base pay and total earnings.

Calculate body mass index with metric or imperial units and see your category.

Estimate basal metabolic rate and daily calorie needs by activity level.

Find your daily calorie target for losing, maintaining or gaining weight.

Estimate body fat percentage with the US Navy tape method.

Find your daily hydration target based on body weight and activity.

Estimate your due date and current pregnancy week from your last period.

Calculate maximum heart rate and personalised training zones.

Solve every common percentage problem: of, change, and what percent.

Calculate mean, median, mode, range and standard deviation of any dataset.

Add, subtract, multiply and divide fractions with simplified results.

Calculate the area and perimeter of rectangles, circles and triangles.

Estimate concrete volume, bags and cost for slabs, footings and pads.

Work out how many litres of paint your walls need, including coats.

Calculate tiles, boxes and cost for any floor or wall area.

Estimate flooring packs and cost from room dimensions.

Estimate gravel volume, tonnage and delivery cost for driveways and paths.

Solve for voltage, current, resistance and power from any two values.

Calculate the running cost of any appliance per day, month and year.

Convert between torque, force and lever arm length.

Calculate weighted grade point average from credits and grades.

Find your final grade and what you need on the remaining exam.

Calculate exact age in years, months, days, hours and next birthday.

Count days, weeks, months and working days between two dates.

Split the bill and calculate tips per person in a tap.

Estimate trip fuel consumption and cost from distance and efficiency.

Convert length, weight, volume and temperature between common units.

Convert Celsius, Fahrenheit and Kelvin instantly.

Solve for speed, distance or time with automatic unit conversion.

Convert between bytes, KB, MB, GB and TB in both decimal and binary.

Estimate how long a file takes to download at your connection speed.