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SABS / ISO 80000 Metric SI Roadmap

Engineering & SI Unit Converters

Engineered for South African civil engineers, structural technicians, laboratory analysts, and materials researchers. Each converter displays the standard technical unit, its Afrikaanse benaming, and the exact equivalent derived SI units.

Interactive Widget: Pressure & Concrete Stress (Druk & Meganiese Spanning)

Standard unit: Megapascal (1 MPa = 1 N/mm² = 1,000 kPa)

Active Live Tool
Standard Concrete 30 MPa
1 MPa = 1,000 kPa
1 bar = 100 kPa = 0.1 MPa
1 MPa ≈ 145.038 psi

Complete Directory of 13 Specialized Engineering Converters

01SI Equivalent

Energy, Work & Heat

Energie, Werk en Warmte
Base SI Reference:Joule (J = N·m = kg·m²/s²)

Thermal energy, electrical work, and mechanical heat dissipation conversions.

Supported Units:
Joule (J)Kilojoule (kJ)Megajoule (MJ)Kilowatt-hour (kWh)+3 more
02SI Equivalent

Pressure

Druk
Base SI Reference:Pascal (Pa = N/m²)

Hydrostatic head, hydraulic system pressures, barometric atmospheric measurements.

Supported Units:
Pascal (Pa)Kilopascal (kPa)Megapascal (MPa)Bar (bar)+4 more
03SI Equivalent

Mechanical Stress

Meganiese Spanning
Base SI Reference:Megapascal (MPa = N/mm²)

Concrete cube compressive strength (e.g. 25–40 MPa), tensile yield testing, and Young's modulus.

Supported Units:
Megapascal (MPa)Gigapascal (GPa)Kilopascal (kPa)N/mm²+3 more
04SI Equivalent

Force

Krag
Base SI Reference:Newton (N = kg·m/s²)

Structural point loads, anchor pull-out resistance, tension test readings.

Supported Units:
Newton (N)Kilonewton (kN)Meganewton (MN)Kilogram-force (kgf)+1 more
05SI Equivalent

Volume Rate / Flow Rate

Volumetempo / Vloeitempo
Base SI Reference:Cubic Metre per Second (m³/s)

Pump discharge capacities, borehole yield testing, and stormwater drainage channels.

Supported Units:
m³/sm³/hLitres per second (L/s)Litres per minute (L/min)+2 more
06SI Equivalent

Volume & Capacity

Volume en Kapasiteit
Base SI Reference:Cubic Metre (m³)

Physical displacement, fluid storage capacity, bulk container packaging.

Supported Units:
Cubic Metre (m³)Litre (L)Millilitre (mL)Cubic Centimetre (cm³)+3 more
07SI Equivalent

Velocity & Speed

Spoed en Snelheid
Base SI Reference:Metre per Second (m/s)

Pipe fluid velocities, wind shear ratings, transportation speed indices.

Supported Units:
Metres per second (m/s)Kilometres per hour (km/h)Miles per hour (mph)Knots (kn)
08SI Equivalent

Mass & Weight

Massa en Gewig
Base SI Reference:Kilogram (kg)

Weighbridge axle load certificates, laboratory analytical balances, bulk batching.

Supported Units:
Kilogram (kg)Metric Tonne (t = 1000 kg)Gram (g)Milligram (mg)+2 more
09SI Equivalent

Area

Oppervlakte
Base SI Reference:Square Metre (m²)

Land surveying, civil earthworks footprints, erf boundaries, agricultural plots.

Supported Units:
Square Metre (m²)Hectare (ha = 10,000 m²)Square Kilometre (km²)Square Centimetre (cm²)+2 more
10SI Equivalent

Length & Distance

Lengte en Afstand
Base SI Reference:Metre (m)

Architectural dimensioning, linear chainage, pipeline run measurements.

Supported Units:
Metre (m)Millimetre (mm)Centimetre (cm)Kilometre (km)+4 more
11SI Equivalent

Temperature

Temperatuur
Base SI Reference:Kelvin (K)

Concrete curing temperatures, asphalt batching heat limits, ambient thermal tolerances.

Supported Units:
Celsius (°C)Kelvin (K)Fahrenheit (°F)
12SI Equivalent

Standard Test Sieve Apertures

Toetssiwwe Openinggroottes
Base SI Reference:Millimetres & Microns (mm / µm)

Civil engineering soil grading, asphalt aggregate sieve analysis, and particle size distribution.

Supported Units:
SANS 3001 mesh sizesISO 3310-1 aperturesASTM E11 mesh numbers75mm down to 75µm (No. 200 sieve)
13SI Equivalent

Hydrometer Conversions

Hidrometer Herleidings
Base SI Reference:Specific Gravity (SG) / Density (g/L)

Soil sediment hydrometer testing for silt and clay fractions per SANS 3001-GR30.

Supported Units:
ASTM D422 152H (g/L)ASTM 151H Specific GravityBrix (°Bx)Baumé (°Bé)+1 more