Free Education & Everyday Calculators & Tools
Free online tools: age on planets, days alive, clothing size conversion, grade/GPA, reading speed, tip and bill split. No signup, all in your browser.
Find a school or everyday calculator
Choose the tool by the task in front of you. The education calculators show the assumptions behind the result, while the everyday utilities cover common conversions and quick planning problems.
- GPA calculator
Calculate a weighted GPA from course grades and credits, or estimate a required grade on a 4.0 scale.
- Reading and typing speed calculator
Calculate words per minute or estimate how long a reading or typing task may take.
- Clothing size converter
Compare common US, UK, and EU size labels as a reference before checking a brand chart.
- Tip and bill split calculator
Calculate a tip, total bill, and per-person share for a group meal.
School policies, brand sizing, and local tipping customs vary. Treat the output as a calculation aid and confirm the convention that applies to you.