Math Calculators
Free online calculators for everyday math problems. Simple to use, with detailed explanations and step-by-step solutions.
Math Calculators (8)
Percentage Calculator
Calculate percentages instantly for discounts, taxes, grades, and more. Three calculation modes with step-by-step explanations.
Length Converter
Convert metric and imperial length units instantly. Supports mm, cm, m, km, in, ft, yd, and mi with clear results.
Fraction Calculator
Simplify fractions and solve addition, subtraction, multiplication, and division with step-by-step explanations.
Ratio Calculator
Calculate and simplify ratios instantly. Simplify, scale, compare ratios, and work with three-part ratios. Perfect for cooking, mixing, and scaling.
Sales Tax Calculator
Calculate sales tax instantly for any US state. Enter your purchase amount and select your state to see the exact tax amount and total price.
Random Number Generator
Generate random numbers for any use case. Set ranges, choose integers or decimals, and generate multiple numbers at once.
Discount Calculator
Calculate sale prices, discount amounts, and savings instantly. Perfect for Black Friday shopping and finding the best deals.
Tip Calculator
Calculate tips and split bills fairly among groups. Quick calculations for restaurants, delivery, and services.
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Learn the Math Behind the Calculations
Understanding how these calculations work helps you use them more effectively.
Browse Math Guides