Math

Make everyday numbers feel simple.

2 calculators

Percentages

Calculate percentages, increases and decreases with clear explanations.

PercentagePercentage change

1 calculator

Proportions and ratios

Solve proportional relationships, ratios and scaling problems with clear intermediate steps.

Rule of three

2 calculators

Descriptive statistics

Summarize datasets with weighted averages, quartiles and visual explanations.

Weighted averageQuartiles and IQR

4 calculators

Numbers and notation

Round, format and analyze numbers with precise, understandable methods.

RoundingSignificant figuresScientific notationGCD and LCM

Math tools for everyday calculations

Math is most useful when a result also shows the relationship behind it. These tools turn percentages, proportions, averages and number formats into steps you can check.

Use the tool that matches the question first, then compare the result with the displayed method before using it in a decision, an assignment or a calculation sheet.