Math, Science & Engineering
A complete collection of scientific and engineering calculation tools for students, educators, professionals, and enthusiasts. From basic unit conversions to advanced physics simulations, financial calculations, and specialized engineering tools. Solve equations, convert measurements, calculate loan payments, simulate physical phenomena, balance chemical equations, design electrical circuits, and estimate construction costs—all with accuracy and ease.
Split shared expenses among group members and instantly see who owes whom, with the fewest transactions to settle up.
Work out your down payment amount, see the monthly mortgage impact, compare scenarios at different percentages, and check whether PMI applies.
List your assets and liabilities to calculate your net worth instantly, with a financial health rating, debt-to-asset ratio, and an assets-vs-liabilities chart.
Find how many units you need to sell to cover all costs and start making profit, with instant break-even point, revenue, and contribution margin.
See how inflation changes the value of money over time using real World Bank CPI data for 49 countries, plus future projections.
Calculate profit margin, markup, and selling price from cost and revenue. Supports gross, operating, and net margin types.
Build a debt repayment plan with the Avalanche or Snowball method. Compare strategies, see your debt-free date, and track the interest you save.
Find out how much to save each period to reach your financial goal. Plan with interest rates, deposit frequencies, and visual growth charts.
See if you are on track to retire: enter your age, savings, and monthly contribution to project your fund, monthly income gap, and how long the money lasts.
Add or remove VAT/GST from any amount and see the net price, tax, and gross total at once, with preset rates, 100+ country rates, and batch mode.
Calculate return on investment, net profit, and annualized ROI instantly. Compare up to four investments side by side with a visual chart.
Calculate the sale price, savings, and effective discount percentage instantly. Stack multiple discounts, find the percent off between two prices, and add tax.