Engineering Unit Converter

Engineering Unit Converter

Engineering projects frequently require converting between different measurement systems. Whether you are working with metric (SI) or imperial units, process engineering specifications, or international standards, accurate unit conversion is critical. A wrong conversion factor can lead to costly manufacturing errors, failed inspections, or even safety incidents. This free engineering unit converter supports over 200 units across 14 categories commonly used in mechanical, chemical, civil, and manufacturing engineering.

Unlike generic unit converters, this tool is built specifically for engineering workflows. It includes niche units like torr, dyn, poise, and mil that general-purpose converters often omit. All conversions use IEEE-standard precision factors so you can trust the results for professional calculations.

Supported Categories

• Pressure – Pa, bar, psi, kPa, MPa, atm, torr, mmHg, inHg
• Torque – Nm, lb-ft, kg-cm, oz-in
• Force – N, kN, lbf, kgf, dyn
• Temperature – Celsius, Fahrenheit, Kelvin, Rankine
• Length – m, mm, cm, km, in, ft, yd, mi, μm, mil
• Mass – kg, g, mg, lb, oz, US ton, metric tonne
• Volume – L, mL, US gallon, quart, pint, fl oz, m³, ft³, in³
• Flow Rate (Volume) – L/min, GPM, m³/h, CFM
• Power – W, kW, HP, PS, BTU/h
• Energy – J, kJ, kWh, BTU, cal, kcal
• Speed – m/s, km/h, mph, ft/s, knot
• Viscosity (Dynamic) – Pa·s, cP (centipoise), P (poise)
• Density – kg/m³, g/cm³, lb/ft³, lb/in³
• Area – m², mm², cm², in², ft²

Common Engineering Conversions

Quick reference for the most frequently needed engineering unit conversions:

API Access

All conversions available in this tool are also accessible through the Engineering Unit Converter API. The REST API supports programmatic conversion requests with JSON responses, making it easy to integrate accurate unit conversions into your engineering software, MES dashboards, data pipelines, or mobile applications. The API covers the same 14 categories and 200+ units with full precision.