UnitExact is a free collection of the most-searched calculators and unit converters: 10 calculators and 10 converters, each with its formula, a worked example and FAQs.
The tools
- BMI Calculator
- Mortgage Calculator
- Calorie Calculator
- Percentage Calculator
- Age Calculator
- GPA Calculator
- Compound Interest
- Tip & Bill Split
- Pregnancy & Due Date
- Scientific Calculator
- Length Converter
- Weight Converter
- Temperature Converter
- Volume Converter
- Speed Converter
- Time Converter
- Area Converter
- Data Storage Converter
- Energy Converter
- Pressure Converter
How the list was chosen
From public search-demand research (October 2026). Volume figures are third-party estimates, not exact Google data, and are shown as bands where sources disagree. No reviews or testimonials are published on this site: none have been collected.