Math & Calculators

Calculate percentages, percentage change, and what percent one number is of another with step-by-step breakdowns.

Calculate tips and split bills between multiple people with customizable tip percentages and rounding options.

Calculate monthly payments, total interest, and generate amortization schedules for loans and mortgages.

Calculate Body Mass Index from height and weight with category classification and healthy range guidance.

Calculate sale prices, savings amounts, and final costs after single or stacked percentage discounts.

Compute mean, median, mode, standard deviation, variance, and other descriptive statistics from a data set.

Convert between fractions, decimals, and percentages instantly with simplification and step-by-step work.

Convert numbers to and from scientific notation with precision control and engineering notation support.

Perform matrix operations including addition, multiplication, determinant, inverse, transpose, and eigenvalues.

Estimate page load times based on file sizes, connection speeds, and resource counts with optimization tips.

Estimate the return on investment for SEO campaigns based on traffic projections, conversion rates, and costs.

Set and validate performance budgets for page weight, request counts, and load-time targets by connection type.

Calculate exact age in years, months, days, and upcoming birthday countdowns from any date of birth.

Calculate the exact difference between two dates in years, months, weeks, days, and business days.

Calculate compound interest growth over time with customizable principal, rate, frequency, and contributions.

Calculate weighted and unweighted GPA from course grades and credit hours with 4.0 and 5.0 scale support.

Solve quadratic equations using the quadratic formula with step-by-step solutions, discriminant analysis, and graphing.

Estimate image file sizes based on dimensions, color depth, format, and compression level before export.

Calculate dots per inch and pixels per inch from screen or print dimensions for optimal image resolution.

Calculate new image dimensions while maintaining aspect ratio for common screen, print, and social media sizes.