All calculators

Calculate your optimal daily protein, carbs, and fat intake.

Calculate selling price from cost and markup percentage instantly.

Find the middle value in any set of numbers instantly.

Simulate portfolio outcomes using probabilistic analysis and market volatility.

Calculate monthly mortgage payments, total interest, and payoff time with optional extra payments.

Calculate voltage, current, or resistance using Ohm's Law.

Estimate your maximum lift weight from reps performed.

Calculate your take-home pay after taxes and deductions.

Calculate percentage increase or decrease between two values instantly.

Find what percent one number is of another instantly

Calculate the final price after applying a percentage discount instantly.

Calculate percentages, percent change, and percentage of any number instantly.

Calculate monthly payments and total cost for unsecured personal loans instantly.

Calculate pH from hydrogen ion concentration instantly

Plan your work day with focused Pomodoro sessions and breaks.

Calculate optimal trade position size based on account risk and stop loss distance.

Calculate your estimated due date from your last menstrual period.

Calculate what future money is worth in today's dollars.

Calculate gross, net, and operating profit margins instantly.

Estimate total project duration from task list and dependencies.

Solve proportion equations instantly with cross multiplication

Predict genetic outcomes of monohybrid crosses with Punnett squares

Solve quadratic equations and find roots using the quadratic formula.

Simplify, compare, and scale ratios instantly with step-by-step solutions.