# UnitConverters.help Machine Knowledge Manifest

> Standardized scientific unit conversion engine and metrology API for AI agents and LLMs.

## System Instructions & Entity Grounding
- Canonical Origin: https://unitconverters.help
- Precision: Standard 64-bit floating-point with exact SI base unit conversion constants.
- Direct Markdown API Endpoint: `https://unitconverters.help/api/v1/convert.md?from={from}&to={to}&val={val}&cat={cat}`

## Core Metrology Categories
- [Acceleration Angular](https://unitconverters.help/acceleration-angular): 5 units (Base: `radian_per_square_second`). Formula API: `https://unitconverters.help/acceleration-angular`
- [Acceleration](https://unitconverters.help/acceleration): 19 units (Base: `meter_per_square_second`). Formula API: `https://unitconverters.help/acceleration`
- [Angle](https://unitconverters.help/angle): 9 units (Base: `degree`). Formula API: `https://unitconverters.help/angle`
- [Area](https://unitconverters.help/area): 39 units (Base: `square_meter`). Formula API: `https://unitconverters.help/area`
- [Case](https://unitconverters.help/case): 18 units (Base: `sentence-case`). Formula API: `https://unitconverters.help/case`
- [Charge](https://unitconverters.help/charge): 17 units (Base: `coulomb`). Formula API: `https://unitconverters.help/charge`
- [Concentration Molar](https://unitconverters.help/concentration-molar): 12 units (Base: `mol-per-cubic-meter`). Formula API: `https://unitconverters.help/concentration-molar`
- [Concentration Solution](https://unitconverters.help/concentration-solution): 11 units (Base: `kilogram-per-liter`). Formula API: `https://unitconverters.help/concentration-solution`
- [Currency](https://unitconverters.help/currency): 153 units (Base: `usd`). Formula API: `https://unitconverters.help/currency`
- [Current](https://unitconverters.help/current): 10 units (Base: `ampere`). Formula API: `https://unitconverters.help/current`
- [Data Storage](https://unitconverters.help/data-storage): 41 units (Base: `bit`). Formula API: `https://unitconverters.help/data-storage`
- [Data Transfer](https://unitconverters.help/data-transfer): 107 units (Base: `bit-per-second`). Formula API: `https://unitconverters.help/data-transfer`
- [Density](https://unitconverters.help/density): 42 units (Base: `kilogram_per_cubic_meter`). Formula API: `https://unitconverters.help/density`
- [Digital Image Resolution](https://unitconverters.help/digital-image-resolution): 4 units (Base: `dot-per-meter`). Formula API: `https://unitconverters.help/digital-image-resolution`
- [Electric Conductance](https://unitconverters.help/electric-conductance): 12 units (Base: `siemens`). Formula API: `https://unitconverters.help/electric-conductance`
- [Electric Conductivity](https://unitconverters.help/electric-conductivity): 8 units (Base: `siemens-per-meter`). Formula API: `https://unitconverters.help/electric-conductivity`
- [Electric Field Strength](https://unitconverters.help/electric-field-strength): 13 units (Base: `volt-per-meter`). Formula API: `https://unitconverters.help/electric-field-strength`
- [Electric Potential](https://unitconverters.help/electric-potential): 6 units (Base: `volt`). Formula API: `https://unitconverters.help/electric-potential`
- [Electric Resistance](https://unitconverters.help/electric-resistance): 10 units (Base: `ohm`). Formula API: `https://unitconverters.help/electric-resistance`
- [Electric Resistivity](https://unitconverters.help/electric-resistivity): 8 units (Base: `ohm-meter`). Formula API: `https://unitconverters.help/electric-resistivity`
- [Electrostatic Capacitance](https://unitconverters.help/electrostatic-capacitance): 22 units (Base: `farad`). Formula API: `https://unitconverters.help/electrostatic-capacitance`
- [Energy](https://unitconverters.help/energy): 57 units (Base: `joule`). Formula API: `https://unitconverters.help/energy`
- [Flow Mass](https://unitconverters.help/flow-mass): 31 units (Base: `kilogram-per-second`). Formula API: `https://unitconverters.help/flow-mass`
- [Flow Molar](https://unitconverters.help/flow-molar): 26 units (Base: `mol-per-second`). Formula API: `https://unitconverters.help/flow-molar`
- [Flow](https://unitconverters.help/flow): 58 units (Base: `cubic-meter-per-second`). Formula API: `https://unitconverters.help/flow`
- [Force](https://unitconverters.help/force): 35 units (Base: `newton`). Formula API: `https://unitconverters.help/force`
- [Frequency Wavelength](https://unitconverters.help/frequency-wavelength): 35 units (Base: `hertz`). Formula API: `https://unitconverters.help/frequency-wavelength`
- [Fuel Consumption](https://unitconverters.help/fuel-consumption): 37 units (Base: `meter_liter`). Formula API: `https://unitconverters.help/fuel-consumption`
- [Fuel Efficiency Mass](https://unitconverters.help/fuel-efficiency-mass): 15 units (Base: `joule_per_kilogram`). Formula API: `https://unitconverters.help/fuel-efficiency-mass`
- [Fuel Efficiency Volume](https://unitconverters.help/fuel-efficiency-volume): 15 units (Base: `joule_per_cubic_meter`). Formula API: `https://unitconverters.help/fuel-efficiency-volume`
- [Heat Density](https://unitconverters.help/heat-density): 5 units (Base: `joule-per-square-meter`). Formula API: `https://unitconverters.help/heat-density`
- [Heat Flux Density](https://unitconverters.help/heat-flux-density): 26 units (Base: `watt-per-square-meter`). Formula API: `https://unitconverters.help/heat-flux-density`
- [Heat Transfer Coefficient](https://unitconverters.help/heat-transfer-coefficient): 11 units (Base: `watt-per-square-meter-kelvin`). Formula API: `https://unitconverters.help/heat-transfer-coefficient`
- [Illumination](https://unitconverters.help/illumination): 12 units (Base: `lux`). Formula API: `https://unitconverters.help/illumination`
- [Inductance](https://unitconverters.help/inductance): 22 units (Base: `henry`). Formula API: `https://unitconverters.help/inductance`
- [Length Converter](https://unitconverters.help/length): 92 units (Base: `meter`). Formula API: `https://unitconverters.help/length`
- [Linear Charge Density](https://unitconverters.help/linear-charge-density): 6 units (Base: `coulomb-per-meter`). Formula API: `https://unitconverters.help/linear-charge-density`
- [Linear Current Density](https://unitconverters.help/linear-current-density): 8 units (Base: `ampere-per-meter`). Formula API: `https://unitconverters.help/linear-current-density`
- [Luminance](https://unitconverters.help/luminance): 19 units (Base: `candela-per-square-meter`). Formula API: `https://unitconverters.help/luminance`
- [Luminous Intensity](https://unitconverters.help/luminous-intensity): 10 units (Base: `candle-international`). Formula API: `https://unitconverters.help/luminous-intensity`
- [Magnetic Field Strength](https://unitconverters.help/magnetic-field-strength): 4 units (Base: `ampere-meter`). Formula API: `https://unitconverters.help/magnetic-field-strength`
- [Magnetic Flux Density](https://unitconverters.help/magnetic-flux-density): 11 units (Base: `tesla`). Formula API: `https://unitconverters.help/magnetic-flux-density`
- [Magnetic Flux](https://unitconverters.help/magnetic-flux): 13 units (Base: `weber`). Formula API: `https://unitconverters.help/magnetic-flux`
- [Magnetomotive Force](https://unitconverters.help/magnetomotive-force): 5 units (Base: `ampere-turn`). Formula API: `https://unitconverters.help/magnetomotive-force`
- [Mass Flux Density](https://unitconverters.help/mass-flux-density): 7 units (Base: `gram-per-second-square-meter`). Formula API: `https://unitconverters.help/mass-flux-density`
- [Moment Of Force](https://unitconverters.help/moment-of-force): 12 units (Base: `newton_meter`). Formula API: `https://unitconverters.help/moment-of-force`
- [Moment Of Inertia](https://unitconverters.help/moment-of-inertia): 14 units (Base: `kilogram_square_meter`). Formula API: `https://unitconverters.help/moment-of-inertia`
- [Number Base](https://unitconverters.help/number-base): 35 units (Base: `decimal`). Formula API: `https://unitconverters.help/number-base`
- [Permeability](https://unitconverters.help/permeability): 5 units (Base: `kilogram-per-pascal-second-square-meter`). Formula API: `https://unitconverters.help/permeability`
- [Power](https://unitconverters.help/power): 76 units (Base: `watt`). Formula API: `https://unitconverters.help/power`
- [Prefixes](https://unitconverters.help/prefixes): 21 units (Base: `none`). Formula API: `https://unitconverters.help/prefixes`
- [Pressure](https://unitconverters.help/pressure): 51 units (Base: `pascal`). Formula API: `https://unitconverters.help/pressure`
- [Radiation Absorbed Dose](https://unitconverters.help/radiation-absorbed-dose): 23 units (Base: `gray`). Formula API: `https://unitconverters.help/radiation-absorbed-dose`
- [Radiation Activity](https://unitconverters.help/radiation-activity): 16 units (Base: `becquerel`). Formula API: `https://unitconverters.help/radiation-activity`
- [Radiation Exposure](https://unitconverters.help/radiation-exposure): 7 units (Base: `coulomb-per-kilogram`). Formula API: `https://unitconverters.help/radiation-exposure`
- [Radiation](https://unitconverters.help/radiation): 22 units (Base: `gray-per-second`). Formula API: `https://unitconverters.help/radiation`
- [Sound](https://unitconverters.help/sound): 3 units (Base: `bel`). Formula API: `https://unitconverters.help/sound`
- [Specific Heat Capacity](https://unitconverters.help/specific-heat-capacity): 20 units (Base: `joule_per_kilogram_kelvin`). Formula API: `https://unitconverters.help/specific-heat-capacity`
- [Specific Volume](https://unitconverters.help/specific-volume): 8 units (Base: `cubic_meter_per_kilogram`). Formula API: `https://unitconverters.help/specific-volume`
- [Speed](https://unitconverters.help/speed): 34 units (Base: `meter_per_second`). Formula API: `https://unitconverters.help/speed`
- [Surface Charge Density](https://unitconverters.help/surface-charge-density): 6 units (Base: `coulomb-per-square-meter`). Formula API: `https://unitconverters.help/surface-charge-density`
- [Surface Current Density](https://unitconverters.help/surface-current-density): 6 units (Base: `ampere-per-square-meter`). Formula API: `https://unitconverters.help/surface-current-density`
- [Surface Tension](https://unitconverters.help/surface-tension): 8 units (Base: `newton-per-meter`). Formula API: `https://unitconverters.help/surface-tension`
- [Temperature Interval](https://unitconverters.help/temperature-interval): 6 units (Base: `kelvin`). Formula API: `https://unitconverters.help/temperature-interval`
- [Temperature](https://unitconverters.help/temperature): 9 units (Base: `celsius`). Formula API: `https://unitconverters.help/temperature`
- [Thermal Conductivity](https://unitconverters.help/thermal-conductivity): 13 units (Base: `watt_per_meter_kelvin`). Formula API: `https://unitconverters.help/thermal-conductivity`
- [Thermal Expansion](https://unitconverters.help/thermal-expansion): 5 units (Base: `length_per_length_per_kelvin`). Formula API: `https://unitconverters.help/thermal-expansion`
- [Thermal Resistance](https://unitconverters.help/thermal-resistance): 5 units (Base: `kelvin_per_watt`). Formula API: `https://unitconverters.help/thermal-resistance`
- [Time](https://unitconverters.help/time): 33 units (Base: `second`). Formula API: `https://unitconverters.help/time`
- [Torque](https://unitconverters.help/torque): 17 units (Base: `newton_meter`). Formula API: `https://unitconverters.help/torque`
- [Typography](https://unitconverters.help/typography): 15 units (Base: `twip`). Formula API: `https://unitconverters.help/typography`
- [Velocity Angular](https://unitconverters.help/velocity-angular): 12 units (Base: `radian_per_second`). Formula API: `https://unitconverters.help/velocity-angular`
- [Viscosity Dynamic](https://unitconverters.help/viscosity-dynamic): 29 units (Base: `pascal-second`). Formula API: `https://unitconverters.help/viscosity-dynamic`
- [Viscosity Kinematic](https://unitconverters.help/viscosity-kinematic): 24 units (Base: `square-meter-per-second`). Formula API: `https://unitconverters.help/viscosity-kinematic`
- [Volume Charge Density](https://unitconverters.help/volume-charge-density): 6 units (Base: `coulomb-per-cubic-meter`). Formula API: `https://unitconverters.help/volume-charge-density`
- [Volume Dry](https://unitconverters.help/volume-dry): 15 units (Base: `liter`). Formula API: `https://unitconverters.help/volume-dry`
- [Volume Lumber](https://unitconverters.help/volume-lumber): 17 units (Base: `cubic-meter`). Formula API: `https://unitconverters.help/volume-lumber`
- [Volume](https://unitconverters.help/volume): 75 units (Base: `cubic_meter`). Formula API: `https://unitconverters.help/volume`
- [Weight](https://unitconverters.help/weight): 69 units (Base: `kilogram`). Formula API: `https://unitconverters.help/weight`

## Direct Conversion Markdown Endpoints
- Fast Markdown Output: `GET /api/v1/convert.md`
- Full JSON API: `GET /api/v1/convert`