Free Math Calculators Tools
Solve complex equations with ease. 24 free tools, no signup needed.
Factor Calculator
Find all divisors, factor pairs, prime factorizations and GCF / LCM of numbers instantly.
Rent vs Buy Calculator
Compare the total financial cost of renting versus buying a home over time.
Graphing Calculator
Plot multiple math equations interactively, inspect curves and find intersections.
Scientific Calculator
Solve complex math expressions, algebra, trigonometry, logarithms and powers instantly.
Macro Calculator
Calculate optimal daily calories, protein, carbs and fat for weight loss, muscle gain or maintenance.
Running Pace Calculator
Calculate running pace per km/mile, speed and race finish splits for 5K, 10K, Half & Full Marathon.
Bra Size Calculator
Calculate US, UK and EU bra sizes from underbust and bust measurements.
Stone Calculator
Aggregate estimator for gravel, crushed rock or river stone in cubic yards and tons.
Stair Stringer Calculator
Calculate stair step count, exact riser height, tread run and stringer board length with IRC checks.
Google Maps Distance Calculator
Calculate straight-line Haversine distance and estimated driving distance between two coordinates.
Distance Formula Calculator
Calculate exact Euclidean distance, midpoint and slope between two (X, Y) coordinates.
Volume of Triangular Prism Calculator
Calculate the volume and surface area of a triangular prism from base, height and length.
Volume of Drum Calculator and Formula
Calculate barrel or 55-gallon drum capacity in US gallons, liters, cubic feet and cubic inches.
Volume of Cone Calculator
Calculate the volume, slant height and surface area of any cone or funnel.
Volume of Sphere Calculator
Calculate exact sphere volume, surface area and circumference from radius.
Calculation Volume of Cylinder
Calculate cylinder volume, lateral area, total surface area and liquid capacity.
Milliliters to Ounces Calculator
Bi-directional converter between milliliters (mL) and US/UK fluid ounces (fl oz).
Grams to Ounces Calculator
Bi-directional weight converter between grams (g) and ounces (oz) / pounds.
kg to lbs Calculator
Convert kilograms (kg) to pounds (lbs) & ounces, or pounds to kilograms.
Area Calculator
Calculate the area of a rectangle, circle, triangle, trapezoid or ellipse.
Variance Calculator
Calculate sample variance (s²), population variance (σ²), standard deviation and sum of squares.
Standard Deviation Calculator
Calculate sample (s) and population (σ) standard deviation, variance and mean with formula breakdown.
Mean Calculator
Calculate arithmetic mean, median, mode, range, min, max and sorted dataset.
Log Calculator
Calculate logarithms log_b(x) for any base, plus log₁₀(x), log₂(x) and natural log ln(x).