Need to compute sine, cosine, or tangent of twice an angle? This double angle formula calculator computes all six trigonometric […]

Below is a mixed number calculator that converts between mixed numbers and improper fractions. Enter either form and get the […]

On this page is an inverse hyperbolic cotangent calculator (or acoth calculator), which calculates an angle from the result of […]

Use this sector area calculator to find the area of a pie-slice shaped section of a circle from its radius […]

On this page is an inverse hyperbolic secant calculator (or asech calculator), which calculates an angle from the result of […]

On this page is a least or lowest common multiple calculator (LCM calculator). Enter a list of numbers and the […]

Need to sort a pile of fractions? This ordering fractions calculator arranges fractions, decimals, and percentages from least to greatest […]

A fortnight is 14 days - two weeks exactly. Commonly used for UK and Australian payroll, this fortnight calculator measures […]

Annually, the IRS sets a maximum IRA contribution limits based on inflation (measured by CPI). There are limits for an […]

Below is an inverse tangent calculator (or arctan calculator), which calculates an angle from the ratio from the tangent function. […]