# calc.engineer General API

**Canonical:** https://apis.io/apis/calc-engineer/calc-engineer-general-api/  
**Provider:** calc.engineer — https://apis.io/providers/calc-engineer/  
**Base URL:** https://calc.engineer  
**Documentation:** https://calc.engineer/api/docs

calc.engineer General API is one of 9 APIs that [calc.engineer](https://apis.io/providers/calc-engineer/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. The published artifact set on APIs.io includes an OpenAPI specification.

The general API from calc.engineer — 23 operation(s) for general.

## Operations (46)

| Method | Path | Summary |
|---|---|---|
| GET | `/api/log_calc` | Metadata for log_calc |
| POST | `/api/log_calc` | Compute logarithms of a positive number in any base. |
| GET | `/api/sig_figs` | Metadata for sig_figs |
| POST | `/api/sig_figs` | Count significant figures in a number and optionally round to N significant… |
| GET | `/api/scientific_notation` | Metadata for scientific_notation |
| POST | `/api/scientific_notation` | Convert any number to scientific notation and engineering notation. |
| GET | `/api/percentage_calc` | Metadata for percentage_calc |
| POST | `/api/percentage_calc` | Calculate what percentage one number is of another. |
| GET | `/api/percentage_increase` | Metadata for percentage_increase |
| POST | `/api/percentage_increase` | Calculate the percentage change between an old value and a new value. |
| GET | `/api/exponent_calc` | Metadata for exponent_calc |
| POST | `/api/exponent_calc` | Compute the result of raising a base to an exponent (base^exponent). |
| GET | `/api/square_root` | Metadata for square_root |
| POST | `/api/square_root` | Compute the square root of a non-negative number. |
| GET | `/api/circumference` | Metadata for circumference |
| POST | `/api/circumference` | Calculate the circumference and area of a circle given either a radius or… |
| GET | `/api/slope_calc` | Metadata for slope_calc |
| POST | `/api/slope_calc` | Calculate the slope, y-intercept, line equation, angle, and distance between… |
| GET | `/api/pythagorean_theorem` | Metadata for pythagorean_theorem |
| POST | `/api/pythagorean_theorem` | Solve for any side of a right triangle using the Pythagorean theorem (a² + b² =… |
| GET | `/api/p_value` | Metadata for p_value |
| POST | `/api/p_value` | Calculate the p-value for a z-score or t-statistic. |
| GET | `/api/confidence_interval` | Metadata for confidence_interval |
| POST | `/api/confidence_interval` | Calculate the confidence interval for a sample mean. |
| GET | `/api/sales_tax` | Metadata for sales_tax |
| POST | `/api/sales_tax` | Calculates total cost including sales tax for a purchase. |
| GET | `/api/salary_to_hourly` | Metadata for salary_to_hourly |
| POST | `/api/salary_to_hourly` | Converts compensation between annual salary, monthly pay, weekly pay, and… |
| GET | `/api/loan_amortization` | Metadata for loan_amortization |
| POST | `/api/loan_amortization` | Computes a full loan amortization schedule given principal, annual interest… |
| GET | `/api/compound_interest` | Metadata for compound_interest |
| POST | `/api/compound_interest` | Calculates compound interest growth over time using the formula A = P(1 +… |
| GET | `/api/test_grade` | Metadata for test_grade |
| POST | `/api/test_grade` | Calculates a test or exam grade from the number of correct answers and total… |
| GET | `/api/unit_convert` | Metadata for unit_convert |
| POST | `/api/unit_convert` | Convert between units across 10 categories: length (m, km, mi, ft, in, yd… |
| GET | `/api/hex_converter` | Metadata for hex_converter |
| POST | `/api/hex_converter` | Convert numbers between hexadecimal, binary, decimal, and octal bases. |
| GET | `/api/timestamp_converter` | Metadata for timestamp_converter |
| POST | `/api/timestamp_converter` | Convert between Unix timestamps and human-readable date/time formats. |
| GET | `/api/bmi_calculator` | Metadata for bmi_calculator |
| POST | `/api/bmi_calculator` | Calculate Body Mass Index (BMI) from weight and height using the WHO standard… |
| GET | `/api/tip_calculator` | Metadata for tip_calculator |
| POST | `/api/tip_calculator` | Calculate tip and split a restaurant bill among multiple people. |
| GET | `/api/date_difference` | Metadata for date_difference |
| POST | `/api/date_difference` | Calculate the difference between two dates in days, weeks, months, years, and… |

## Machine-readable artifacts (1)

- **OpenAPI** — https://artifacts.apis.io/calc-engineer/openapi/calc-engineer-general-api-openapi.yml

## Other calc.engineer APIs (8)

- [calc.engineer Auth API](https://apis.io/apis/calc-engineer/calc-engineer-auth-api/)
- [calc.engineer Catalog API](https://apis.io/apis/calc-engineer/calc-engineer-catalog-api/)
- [calc.engineer Docs API](https://apis.io/apis/calc-engineer/calc-engineer-docs-api/)
- [calc.engineer Homelab API](https://apis.io/apis/calc-engineer/calc-engineer-homelab-api/)
- [calc.engineer Mesh API](https://apis.io/apis/calc-engineer/calc-engineer-mesh-api/)
- [calc.engineer Pcb API](https://apis.io/apis/calc-engineer/calc-engineer-pcb-api/)
- [calc.engineer Power API](https://apis.io/apis/calc-engineer/calc-engineer-power-api/)
- [calc.engineer Rf API](https://apis.io/apis/calc-engineer/calc-engineer-rf-api/)

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/calc-engineer/calc-engineer-general-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/calc-engineer/.