Simple probability calculator for coins dice and counts
Explore fair coin and six-sided die events or supply equally likely favorable and total outcome counts.
Open calculatorWhat’s on your mind?
Find a little clarity. Search by name, or pick a category.
Something new: Internet speed test → Check your connection with a speedometer and a running bunny.
Showing 889–912 of 990 tools · Page 38 of 42
Missing value proportion solver with exact fractions
Solve one unknown position in a/b = c/d and distinguish unique solutions from invalid or undetermined cases.
Open calculatorSales tax percentage calculator for students
Practice finding an entered tax percentage and adding it to a price with the arithmetic shown.
Open calculatorMatrix transpose calculator for rectangular matrices
Swap rows and columns of a bounded exact rational matrix and inspect the resulting dimensions.
Open calculatorSurface area calculator for cube prism and cylinder
Add the exterior face areas of a cube rectangular prism or closed cylinder and compare surface area with enclosed volume.
Open calculatorBody frame ratio and measured somatotype calculator
Compare a legacy height-to-wrist ratio with the separate ten-measurement Heath–Carter anthropometric method.
Open calculator2021 CKD-EPI eGFR calculator
Estimate indexed adult eGFR from serum creatinine with race-free 2021 CKD-EPI coefficients and explicit laboratory units.
Open calculatorBAC calculator with explicit Widmark assumptions
Inspect simplified blood alcohol arithmetic with visible drink-size distribution and elimination assumptions.
Open calculatorPregnancy due date calculator with dating methods
Compare LMP or known-conception calendar dating and view gestational landmarks on an editable comparison date.
Open calculatorOne rep max calculator with two formula estimates
Compare Epley and Brzycki estimates from a repeated lifting set and inspect how repetition count changes the arithmetic.
Open calculatorBra size starting label and conversion tool
Estimate a UK-style starting label from two measurements and compare supported UK US and EU labels.
Open toolDaily carbohydrate energy share calculator
Convert an explicitly chosen share of an adult energy model into carbohydrate grams with visible assumptions.
Open calculatorHistorical Navy circumference body fat calculator
Calculate the historical tape-measure body-fat estimate with explicit inch conversion and measurement assumptions.
Open calculatorWaist to height ratio calculator
Divide matching centimetre measurements and compare the result with stated adult central-adiposity reference intervals.
Open calculatorBody surface area calculator with Mosteller formula
Estimate body surface area from height and weight and see the square-root calculation in square metres.
Open calculatorArchived food points formula calculator
Inspect the former site’s nutrient score while clearly separating it from verified WeightWatchers algorithms.
Open calculatorProtein grams from body weight calculator
Compare explicit grams-per-kilogram planning coefficients with a custom range rather than a universal protein prescription.
Open calculatorHistorical ideal body weight formula comparison
Compare Devine and Hamwi height-based formulas with separate general adult BMI boundary weights.
Open calculatorPregnancy weight gain guideline reference calculator
Look up singleton-pregnancy total and weekly guideline ranges using pre-pregnancy BMI without inventing a weekly target curve.
Open calculatorDaily calorie needs and maintenance estimate calculator
Inspect an adult resting-energy equation and conventional activity multiplier for a current or hypothetical target-weight scenario.
Open calculatorExercise calorie estimate with gross and net comparison
Compare gross activity energy and energy above a one-MET reference using specific 2024 Compendium activities.
Open calculatorPeriod and menstrual cycle calendar estimator
Project the next period start and a clearly assumed ovulation date from entered cycle and luteal lengths.
Open calculatorRoofing area and bundle calculator
Calculate uniform-pitch roof area and whole bundle quantities with explicit coverage and waste assumptions.
Open calculatorMulch soil volume and bag calculator
Estimate a rectangular bed’s bulk volume and whole bags with clear depth units and editable bag capacity.
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