Tool category

Math tools

Percentage, percent-of, ratio, fraction, age, and electrical calculation utilities.

Top math tools

Start with the most common tools in this category, then continue into the complete directory below.

Solve common percentage problems, percent change, increases, decreases, and percentage point differences.

Quickly calculate what X percent of Y equals, with the decimal form, formula, and calculation step.

Simplify fractions, convert ratios to decimals and percents, scale ratios, and split a target total by ratio parts.

Every live PlanetToolbox page currently grouped under Math.

Calculate exact age in years, months, days, total time lived, and days until the next birthday.

Calculate voltage, current, resistance, and power from any two known circuit values.

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