# HeyCalc

> Find practical calculators for education, finance, health, and everyday planning.

## Core tools

- [HeyCalc homepage](https://heycalc.org/): Main public entry point and primary workflow
- [Calculator studio](https://heycalc.org/studio): Choose a calculator for a practical everyday question
- [Finance calculators](https://heycalc.org/finance-tools): Calculators for money, tax, loans, and retirement planning
- [Health and fitness calculators](https://heycalc.org/health-fitness-tools): Calculators for health, fitness, and daily planning

## Popular tools

- [FRAX Score Calculator](https://heycalc.org/education-tools/frax-score-calculator): Free FRAX score calculator to estimate 10-year fracture risk. Enter age, weight, and risk factors to assess osteoporosis risk instantly.
- [Birth Chart Calculator](https://heycalc.org/lifestyle-tools/birth-chart-calculator): Calculate your accurate birth chart with our free natal chart calculator. Enter birth date, time & location to discover planetary positions, zodiac signs, houses & ascendant for personalized astrology
- [German Grade Calculator](https://heycalc.org/education-tools/german-grade-calculator): Free German grade calculator to convert GPA or percentage into the German 1.0–5.0 grading system. Fast and accurate for university use.
- [Letter Grade Calculator](https://heycalc.org/education-tools/letter-grade-calculator): Instantly calculate letter grades from percentages. Free letter grade calculator with accurate grade scale conversion for A, B, C, D, and F.
- [401k Payout Calculator](https://heycalc.org/finance-tools/401k-payout-calculator): Considering an early 401k withdrawal? Calculate the taxes and 10% penalty you'll owe. See your net cash-out amount before you decide.
- [Grade Scale Calculator](https://heycalc.org/education-tools/grade-scale-calculator): Quickly convert numeric scores to letter grades with our free online grade scale calculator. Perfect for students and teachers tracking grades.
- [401k Withdrawal Calculator](https://heycalc.org/finance-tools/401k-withdrawal-calculator): Calculate your net withdrawal amount after federal and state taxes, and the 10% early withdrawal penalty. Don't cash out without seeing the true cost!
- [Score Calculator](https://heycalc.org/education-tools/score-calculator): Instantly calculate your scores for exams, tests, or quizzes. Free online score calculator for students, teachers, and professionals.

## Guides

- [Blog](https://heycalc.org/blogs): Articles, guides, and site updates

## Policies

- [Privacy policy](https://heycalc.org/privacy-policy): Privacy and data-handling information
- [Terms of service](https://heycalc.org/terms-of-service): Terms governing use of the service

## Optional

- [XML sitemap](https://heycalc.org/sitemap.xml): XML sitemap of public indexable pages