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12 tools people search for and use most. Find every other calculator through search or categories.

Basic calculations

Percentage of a number

R = N × P / 100→Basic calculations

Body mass index

BMI = m / h²→Economics

Monthly loan payment

A = P · i(1 + i)ⁿ ÷ ((1 + i)ⁿ − 1); i = r ÷ 1200→Economics

Compound interest

A = P × (1 + r / 100)ⁿ→Basic calculations

Bill with tip

R = C × (1 + P / 100)→Basic calculations

Basic expression calculator

+, −, ×, ÷, %, (), xⁿ→Trigonometry

Scientific trigonometric calculator

sin, cos, tan, ctg, sec, csc, log, xʸ→Algebra

Quadratic equation

D = b² − 4ac; x = (−b ± √D) / 2a→Unit converter

Length converter

x₂ = x₁ × k→Unit converter

Temperature converter

x₂ = x₁ × k→Basic calculations

What percentage is one number of another

P = A / B × 100%→Geometry

Area of a circle