Estimate calories burned with the Run Calorie Burn Calculator from your body weight in kg and the distance you run in km.

Compute sample variance in seconds with our S^2 Calculator — enter five numbers and get s-squared with the mean shown for free.

Combine two moneyline picks with our Money Line Parlay Calculator — enter your stake and both legs to see combined odds, payout, and profit.

Count combinations instantly with the N Choose R Calculator — enter n and r to get the exact number of ways to choose items.

Convert regular and overtime hours to gross pay with the Payroll Time Conversion Calculator using the 1.5x overtime rate.

Compute your updated average with the College Gpa Cumulative Calculator from current GPA, completed credits, and new term grades.

Multiply two 2×2 matrices fast with the Matrix Matrix Multiplication Calculator — enter eight values and get the product matrix.

Estimate your one-rep max with the Max Deadlift Calculator — enter your lift and reps to get a Brzycki-based max instantly.

Discover your playful mental age with the Mental Age Calculator — sleep, exercise and stress shape your fun lifestyle score.

Burn smarter with our Cardio Calorie Calculator — estimate calories for running, cycling, and swimming from your weight and minutes.