BangBangYOUR EVERYDAY TOOLBOX
Math & Science39
Browse every tool included in BangBang. Each page explains the task, how to use it and how its workspace is designed.
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Basic Calculator
Complete everyday arithmetic with a direct expression input.
Math & ScienceFraction Calculator
Calculate fraction arithmetic and see the reduced answer and key steps.
Math & SciencePercentage Calculator
Solve common percentage, proportion, change, and reverse-base questions.
Math & ScienceArea Calculator
Choose a common plane shape and calculate its area from its dimensions.
Math & ScienceRatio Calculator
Simplify ratios, compare two ratios, or solve one missing proportional term.
Math & ScienceCircle Calculator
Calculate all circle parameters from one known radius, diameter, circumference, or area.
Math & ScienceDensity Calculator
Enter two of mass, volume, and density to calculate the third.
Math & ScienceSpeed, Distance & Pace
Enter two of distance, time, speed, or pace to calculate the remaining values.
Math & ScienceLeast Common Multiple
Calculate exact common multiples for 2–20 integers with factorization steps.
Math & ScienceGreatest Common Factor
Calculate the greatest common factor and list all common positive divisors.
Math & ScienceInteger Factorization
List prime factors, all positive divisors, and factor pairs of an integer.
Math & ScienceRoman Numerals
Convert integers from 1 to 3999 and Roman numerals in either direction.
Math & SciencePercent Error
Compare experimental and reference values with absolute or signed relative error.
Math & SciencePoint Distance
Calculate two- or three-dimensional Euclidean distance and coordinate differences.
Math & SciencePermutations and Combinations
Count ordered or unordered selections, with or without repetition.
Math & ScienceQuadratic Solver
Solve real or complex roots with exact expressions and stable approximations.
Math & ScienceMass Calculator
Find mass from positive force and acceleration magnitudes.
Math & ScienceMolarity Calculator
Solve ideal molar concentration, amount of substance or solution volume.
Math & ScienceTriangle Solver
Solve every valid triangle from three known sides or angles, including ambiguous SSA cases.
Math & ScienceVolume Calculator
Calculate solid volume with independent dimension units and exact pi expressions.
Math & ScienceSurface Area
Compute curved, side and base areas with explicit open-face options.
Math & ScienceDescriptive Statistics
Summarize up to 10,000 numbers with explicit sample or population variance.
Math & ScienceSequence Calculator
Generate or identify candidate arithmetic, geometric and Fibonacci-style recurrences.
Math & ScienceGPA Calculator
Calculate term and cumulative GPA with an editable grade mapping.
Math & ScienceGrade Calculator
Calculate weighted grades and the score needed to reach a target.
Math & ScienceResistor Color Code
Read resistance, tolerance and temperature coefficient from four, five or six bands.
Math & ScienceEquivalent Resistance
Calculate pure series or parallel resistance with a unit for each resistor.
Math & ScienceOhm's Law
Solve voltage, current, resistance and power from consistent DC inputs.
Math & ScienceScientific Calculator
Evaluate expressions with trigonometry, logarithms, powers and roots.
Math & ScienceProgrammer Calculator
Calculate exact integers across binary, decimal and hexadecimal with explicit word limits.
Math & ScienceHalf-life Calculator
Solve ideal exponential decay for an amount, time or half-life.
Math & ScienceSlope Calculator
Find exact line equations from two points or a point and slope.
Math & ScienceLong Division
Divide finite decimals with exact remainders and step-by-step working.
Math & ScienceSample Size Calculator
Estimate a simple random sample for a proportion with optional finite population correction.
Math & ScienceProbability Calculator
Calculate complements, unions and intersections under an explicit event relationship.
Math & ScienceZ-score Calculator
Solve for a raw value, mean, standard deviation or Z score.
Math & ScienceConfidence Interval
Calculate one-sample mean or proportion intervals with explicit methods and assumptions.
Math & SciencePlanetary Weight
Compare gravitational weight across Solar System bodies using versioned reference constants.
Math & ScienceMolecular Weight
Parse chemical formulas and calculate molar mass, element counts and mass fractions.