Popular calculators
The tools people around the world open most often — each one computes instantly as you type.
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.
Add or remove VAT at any rate and see the net, tax and gross amounts.
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 body mass index with metric or imperial units and see your category.
Find your daily calorie target for losing, maintaining or gaining weight.
Solve every common percentage problem: of, change, and what percent.
Estimate concrete volume, bags and cost for slabs, footings and pads.
Calculate exact age in years, months, days, hours and next birthday.
Convert length, weight, volume and temperature between common units.
Work backwards from a final amount to find the original value before a percentage change.
Convert CGPA or GPA into a percentage using the standard multiplier or a custom scale.
Convert a percentage or CGPA into a 4.0-scale GPA for US applications.
Calculate attendance percentage and how many classes you can still miss.
Calculate a raise as a percentage, the new salary, and the real gain after inflation.
Hitting percentage, kill percentage and efficiency from kills, errors and attempts.
Find the exact end date of a 0, 10 or 90 day surgical global period from the date of surgery.
Calculate the 90 day global period end date for major surgery, including the pre-operative day.
Look up the global days assigned to a CPT code and get the exact global end date for your surgery.