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Conversion tables
Conversion tables Cooking conversions Imperial units Old Czech units Density (liters to kg) kW to hp and Nm kJ to kcal and kWh Pressure: bar, psi, kPa Speed: km/h, m/s Flow: l/min, m³/h Slope: % and degrees Oven temperature SI prefixes Roman numerals Data units (MB, GiB) Mbps to MB/s Fuel: l/100 km and MPG Temperature conversions
Calculators
Energy and fuel Construction Fractions Equations Area and perimeter Volume and surface Trigonometry Powers and roots Logarithms Calculus BMI calculator Percentages Rule of three Average
Quantities
Quantities Time Length Weight Density Torque Volume Area Work (energy) Flow rate Speed Force Pressure Power Temperature Data size Data rate
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Unit converter
Calculators
Energy and fuel Construction Fractions Equations Area and perimeter Volume and surface Trigonometry Powers and roots Logarithms Calculus BMI calculator Percentages Rule of three Average
Quantities
Time Length Weight Density Torque Volume Area Work (energy) Flow rate Speed Force Pressure Power Temperature Data size Data rate
Conversion tables
Conversion tables Cooking conversions Imperial units Old Czech units Density (liters to kg) kW to hp and Nm kJ to kcal and kWh Pressure: bar, psi, kPa Speed: km/h, m/s Flow: l/min, m³/h Slope: % and degrees Oven temperature SI prefixes Roman numerals Data units (MB, GiB) Mbps to MB/s Fuel: l/100 km and MPG Temperature conversions
Home / Construction and materials

Construction and materials

Construction calculators: concrete, bricks, plaster, paint, plasterboard, roofing, stairs and bulk materials.

Pick a calculator. Each computes material quantities with a visual guide.

Concrete for a foundation slab

Calculate the volume of concrete for a foundation slab, with a drawing and material breakdown.

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Concrete mixing – ratio and quantities

Cement, sand, gravel and water quantities for a given volume and concrete class.

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Tiles and flooring

Number of tiles or flooring packs for a room, with waste allowance and a layout visual.

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Bricks and mortar for a wall

Number of bricks or blocks and mortar for a wall.

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Plaster and render

Plaster and render quantities for walls and ceilings.

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Paint for walls

Amount of paint for walls and ceilings, with number of coats.

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Plasterboard

Number of plasterboard sheets, profiles and screws for walls and ceilings.

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Roofing materials

Roof area and amount of roofing material by pitch.

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Staircase calculator

Number of steps, rise and going of a staircase, checked against comfort rules.

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Bulk materials

Weight and volume of sand, gravel, soil and other bulk materials.

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Jednotek.cz

A free online converter of physical units. Fast, accurate and no registration.

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Quantities

  • Time
  • Length
  • Weight
  • Density
  • Torque
  • Volume
  • Area
  • Work (energy)
  • Flow rate
  • Speed
  • Force
  • Pressure
  • Power
  • Temperature
  • Data size
  • Data rate

Conversion tables

  • Cooking conversions
  • Imperial units
  • Old Czech units
  • Density (liters to kg)
  • kW to hp and Nm
  • kJ to kcal and kWh
  • Pressure: bar, psi, kPa
  • Speed: km/h, m/s
  • Flow: l/min, m³/h
  • Slope: % and degrees
  • Oven temperature
  • SI prefixes
  • Roman numerals
  • Data units (MB, GiB)
  • Mbps to MB/s
  • Fuel: l/100 km and MPG
  • Temperature conversions
  • All tables
© 2026 Jednotek.cz 17 conversion tables and 16 quantities – free, no registration.