Formula Calculator

Design your own calculators with variables, functions and units.

Turn any idea into a calculator you can trust. Formula Calculator lets you build custom calculators with variables, functions and units—perfect for study, engineering, finance, science and daily life.

【Core Features】

• Build Your Own Calculators

- Define inputs with friendly names and default values

- Choose units (kg, m, USD, etc.) for clear results

- Write expressions using common math functions

- Control decimal places for precise outputs

- Preview results instantly while typing

• Organize Everything

- Use tags to group formulas (geometry, statistics, BMI, physics, finance)

- Search across all formulas in seconds

- Sort by name, time, or custom order

- Reuse sub-formulas to keep complex projects tidy

• Never Lose Your Work

- Every calculation saved to History automatically

- Recalculate with one tap

- Export data when needed

- Keep progress across sessions

• Built-in Date Calculator

- Find days before/after any date

- Calculate the number of days between two dates

- Perfect for planning and deadlines

【Perfect For】

- Students - Geometry, physics, statistics calculations

- Engineers - Custom engineering formulas

- Finance - Compound interest, ROI, loan calculations

- Daily Life - BMI, cooking conversions, date planning

Clean design, instant feedback, and powerful tools make this the one "formula calculator" you'll use every day. Build once, use forever.