Math & Family Finance Tools
Free interactive calculators and converters to make math faster and easier. Pick any tool below to get started. Alongside standard math, we offer tools using the 50/30/20 rule, DIME method, and amortization math to manage family finances.
Student Loan Calculator
Calculate monthly payment, total interest, and repayment cost
Open ToolTutoring Cost Calculator
Estimate weekly, monthly, and total tutoring costs
Open ToolFamily Budget Calculator
Split your income into needs, wants, and savings with the 50/30/20 rule
Open ToolBraces Cost Calculator
Estimate braces cost, insurance coverage, and monthly payments
Open ToolLife Insurance Calculator
Estimate coverage needs using the DIME method
Open ToolCollege Savings Calculator
See how a 529 plan grows over time with monthly contributions
Open ToolFraction Calculator
Add, subtract, multiply & divide fractions with visual pie charts
Open ToolPercentage Calculator
Find percentages and percentage change with an animated ring
Open ToolUnit Converter
Convert length, weight, temperature, volume and speed instantly
Open ToolGeometry Calculator
Calculate area and perimeter for circles, triangles, rectangles and more
Open ToolGraphing Calculator
Plot linear equations on a live coordinate grid
Open ToolPrime Number Checker
Check if a number is prime and see all its factors
Open ToolGCF & LCM Calculator
Find the greatest common factor and least common multiple
Open ToolRatio Calculator
Solve proportions and ratios with an animated balance scale
Open ToolStatistics Calculator
Calculate mean, median, mode and range with a live bar chart
Open ToolExponent Calculator
Visualize powers and roots with an animated grid
Open ToolRoman Numeral Converter
Convert between numbers and Roman numerals with chisel animation
Open ToolTimes Table
Interactive color-coded multiplication table up to 15A-15
Open ToolEquation Solver
Solve linear equations step by step on a chalkboard
Open ToolTriangle Calculator
Solve any triangle from sides and angles with live SVG
Open ToolNumber Base Converter
Convert numbers between binary, octal, decimal and hex
Open Tool