Calculator


This is our calculator, with mathematical formulas to help

Length Conversions
1 mile = 5,280 ft = 1,760 yards = 1,609.34 m = 1.609 km
1 ft = 12 inches = 0.305 m = 30.48 cm
1 inch = 2.54 cm = 25.4 mm
1 km = 1,000 m = 0.621 miles
1 m = 39.37 inches = .3281 ft = 1.094 yards
1 cm = 10 mm = 0.394 inches
1 mm = 0.04 inches
Weight Conversions
1 ton = 2,000 lbs = 907.18 kg
1 lb = 16 oz = 453.59 g = 0.454 kg
1 oz = 28.35 g
1 kg = 2.205 lbs = 1,000 g = 1,000,000 mg
Capacity conversions
1 gallon = 4 quarts = 8 pints = 16 cups = 3.785 liters
1 quart = 0.946 liters
1 liter = 1.057 quarts = 0.264 gallons
Area Conversions
1 section = 1 sq. mile = 640 acres = 2.59 sq km = 259 hectares
1 acre = 43,560 sq ft = 0.405 ha = 4047 sq m
1 sq ft = 0.093 sq m
1 sq km = 1,000,000 sq m = 100 ha = 247.1 acres
1 ha = 10,000 sq m = 2.471

Pre-algebra:
Average/mean = Sum of values divided by the number of values.
Probability = Target outcomes divided by total outcomes.
Quadratic Formula = x = −b ± √b²-4ac/2a.
MAD (Mean absolute deviation) = The mean of the sum of the point’s distances from the mean
Range = Difference between the highest data value and the lowest data value
Trigonometry:
Sine = Opposite divided by hypotenuse
Cosine = Adjacent divided by hypotenuse
Tangent = Opposite divided by adjacent
(REMEMBER SOH-CAH-TOA)
Geometry:
90* clockwise rotation (On graph) = (x,y) → (y,-x)
90* counterclockwise rotation (On graph) = (x,y) → (-y,x)
180* rotation = (x,y) → (-x,-y)
Pythagorean Theorem = a²+b² = c² (c is hypotenuse)
Area of circle = π times r² (r being radius)
Circumference of circle = 2π * r
Area of triangle = Base times height divided by 2.
Intermediate-Algebra:
Slope Formula = Slope = y₂ – y₁ divided by x₂ – x₁
Slope Intercept = y = mx+b
Distance Formula = d=√(x₁ – x₂)² + (y₁ – y₂)²