# Dash Calculator

> Free online calculators, converters, and tools. No sign-up required.

Dash Calculator (dashcalculator.com) provides approximately 490 free web-based calculators, converters, and utility tools. All tools run entirely in the browser with no account or installation needed.

## Calculator Categories

- **Finance**: Compound interest, loan payments, mortgage, ROI, investment returns, retirement planning, 401(k) contributions, options trading (Black-Scholes, Greeks), tax estimators
- **Math**: Percentage, fractions, geometry (area, volume, surface area), linear algebra (matrix operations, determinants), general arithmetic
- **Health and Fitness**: BMI, calorie intake, body fat percentage, macro calculators, heart rate zones, pregnancy due date
- **Medical**: Clinical calculators and health assessment tools
- **Business**: Profit margin, break-even analysis, markup, discount calculations
- **Economics**: GDP, inflation, supply and demand, economic indicators
- **Statistics**: Mean, median, standard deviation, probability, sample size, confidence intervals
- **Construction**: Concrete, lumber, roofing, flooring, paint coverage estimators
- **Physics**: Velocity, acceleration, force, energy, wave calculations
- **Chemistry**: Molarity, dilution, molecular weight, pH calculations
- **Marketing**: CPC, CPM, CTR, ROAS, conversion rate, ad spend calculators
- **Sports**: Batting average, ERA, pace calculators, sport-specific stats
- **Tech**: Data transfer speed, storage conversion, bandwidth calculators
- **Gaming**: Game-specific stat and resource calculators
- **School**: GPA, grade calculators, AP exam score estimators, ACT/SAT tools
- **Pets and Animals**: Pet age, food portions, health calculators
- **Time and Date**: Date differences, age calculator, time zone converters, countdowns

## Converters

Unit converters for binary, hexadecimal, octal, ASCII, temperature, length, weight, volume, and more.

## Tools

Utility tools including word counter, character counter, dice roller, random number generator, notepad, and other everyday tools.

## URL Structure

- Calculators: dashcalculator.com/calculators/{calculator-slug}
- Converters: dashcalculator.com/converters/{converter-slug}
- Tools: dashcalculator.com/tools/{tool-slug}
- Categories: dashcalculator.com/category/{type}/{category-slug}