Use the Z Table Calculator to find the classic mean-to-z area for any z score from 0 to 3.99, the same value printed z tables show.

Use the Bench Press Weight Calculator to estimate your one-rep max from any set and get training loads at 70, 80 and 90 percent instantly.

Build a legal character with the Dnd 5e Ability Score Calculator: pick six scores and check the point buy cost against the 27 point budget.

Find any modifier fast with the Dnd Ability Score Calculator: enter a score and proficiency bonus to get the modifier and skill total.

Load adjustable dumbbells right with the Dumbbell Calculator: enter a target weight and handle weight to get the exact plates per side.

Use the Weight Lifting Calculator to turn any target weight into a plate list per side for 45, 35 and 15 lb bars, with leftover shown.

Use the Deadlift Strength Calculator to compare your deadlift with your bodyweight and find your level from Beginner to World Class today.

Use the Lift Calculator to estimate your one-rep max with the Brzycki formula from any set, plus the 95 percent load for heavy days.

Solve any linear equation with the Equation Calculator. Enter a, b and c to find x instantly, with a built-in check included.

Use the Equations Calculator to solve quadratic equations fast. Get the discriminant and real roots of any quadratic equation.