All Tools

Calculate percentages instantly. Find percentage of a number, increase/decrease, and difference.

Estimate home renovation costs by room, quality level and additional work. Includes contingency buffer and budget, mid-range, premium tiers.

Calculate concrete volume and materials needed for slabs, columns, walls and footings. Get cement bags, sand and gravel quantities.

Calculate how many litres of paint you need for any room. Enter room dimensions, number of coats and paint type. Includes cost estimate.

Calculate flooring material quantity and cost with waste factor for hardwood, laminate, tile, vinyl and carpet. Includes installation cost.

Convert between units of length, weight, temperature, area, volume, speed, and time.

Free online scientific calculator with trigonometry, logarithms, and advanced math functions.

Convert numbers between binary, octal, decimal, and hexadecimal bases instantly.

Calculate and solve ratios and proportions. Find missing values in A:B = C:D equations.

Calculate monthly loan payments, total interest, and view amortization schedule. Works for mortgages, car loans, and personal loans.

Calculate compound interest with regular contributions. See your investment grow with yearly breakdown and visual chart.

Calculate VAT/tax amounts. Add or remove VAT with country presets. Supports bulk calculation for multiple amounts.

Solve linear (ax + b = c) and quadratic (ax² + bx + c = 0) equations with step-by-step solutions.

Perform matrix operations: add, subtract, multiply, determinant, transpose, and inverse for 2x2 and 3x3 matrices.

Calculate statistics from a data set: mean, median, mode, range, variance, standard deviation, min, and max.

Calculate your exact age in years, months, days, hours, and minutes. Find the age between any two dates. Free online age calculator, no signup required.

Calculate your Body Mass Index (BMI) instantly. Supports metric and imperial units. Get your BMI category and healthy weight range. Free, no signup needed.

Calculate your TDEE, calorie deficit and daily target calories to lose, maintain or gain weight. Includes macro breakdown and time-to-goal estimate.

Calculate your daily macronutrient targets — protein, carbs and fat — based on your body stats, activity level, goal and diet style.

Free online Pomodoro timer with 25-minute work sessions and 5-minute breaks. Customizable intervals, sound alerts, and session tracking. No signup required.