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About

In civil engineering and materials science, stress and strength are commonly expressed in Megapascals (MPa) because the values for materials like concrete and steel are typically in the millions of Pascals. However, raw sensor data or geotechnical reports may arrive in Kilopascals (kPa).

This tool performs the metric prefix shift required to convert kPa to MPa. It is optimized for mental checks of orders of magnitude, such as verifying if a concrete batch meets a 25 MPa spec when the testing machine reads 25000 kPa.

materials science concrete mpa kpa civil engineering

Formulas

The prefix "kilo" means 103 and "mega" means 106. The conversion is a division by one thousand:

VMPa = VkPa1000

Reference Data

Material / SpecStrength (kPa)Strength (MPa)
Residential Concrete (C15)15,00015
Standard Foundation (C20)20,00020
Reinforced Slab (C25)25,00025
High Strength Concrete (C50)50,00050
Structural Steel (Yield)250,000250
Structural Steel (Ultimate)400,000 - 550,000400 - 550
Granite (Compressive)130,000130
Rubber (Tensile)10,000 - 20,00010 - 20

Frequently Asked Questions

Yes. 1 MPa is equivalent to about 10 atmospheres or 145 PSI. It is roughly the pressure at a depth of 100 meters underwater.
Concrete strength is high. Writing 30 MPa is much more convenient than writing 30,000,000 Pascals or 30,000 kPa. It aligns with the standard N/mm² unit, as 1 MPa = 1 N/mm2.