A complete list of the calculators available on this site

General Calculators

Yd² to m² Area in square yards:
Area in square metres is:

Converts square yards to square metres.

Appears on:

Sub-base Coverage The area to be covered is...
square metres...
...and the compacted sub-base should be
millimetres thick/deep
You will need approximately...
T of DTp1

Description:

Calculates tonnage of DTp1/DTp2 or "Crusher Run" required when thickness and area are known.

Appears on:

Grit Sand Volume The area to be covered is...
square metres...
...and the compacted bedding should be
millimetres thick/deep
You will need approximately.....
T of Grit Sand

Description:

Calculates tonnage of grit sand required when compacted thickness and total area is known.

Appears on:

Calculators for Concretes and Mortars

Concrete Volume Enter dimensions of rectangle to be concreted:
Length metres
Width metres
Thickness millimetres
You will need approximately...
m³ of concrete

Description:

Calculate required quantity of concrete.

Appears on:

C7.5 Concrete The volume of concrete required is
cubic metres
You will need approximately...
Kg of cement
Kg of sand
Kg of gravel
Litres of water

Description:

Estimate volumes of aggregates and cement needed to mix a C7.5 equivalent concrete as used for bedding kerbs and edgings.

Appears on:

C20 Concrete The volume of concrete required is
cubic metres
You will need approximately.....
Kg of cement
Kg of sand
Kg of gravel
Litres of water

Description:

Calculate quantities of sands, gravels and cement needed to mix a general purpose C20 equivalent concrete.

Appears on:

Grano Mix The volume of concrete required is
cubic metres (m³)
You will need approximately...
For Pure Mix
Kg of grano dust
Kg of cement
Litres of water
For Softened Mix
Kg of grano dust
Kg of cement
Kg of sand
Litres of water

Description:

Calculate quantities of grano dust, sand and cement needed to make two forms of granolithic mortar.

Appears on:

3:1 Bedding Mix The area to be paved is...
square metres
Assuming a 50mm deep bed,
you will need approximately.....
T of Grit Sand
bags @ 25Kg]
PLUS
Kg of cement
bags @ 25Kg]

Description:

Determine quantities of sand and cement required to prepare this bedding grade mortar suitable for laying all flags.

Appears on:

6:1 Bedding Mix The area to be paved is...
square metres
Assuming a 50mm deep bed,
you will need approximately.....
T of Grit Sand
bags @ 25Kg]
PLUS
Kg of cement
bags @ 25Kg]

Description:

Determine quantities of sand and cement required to prepare this bedding grade mortar suitable for laying most flags.

Appears on:

10:1 Bedding Mix The area to be paved is
square metres
Assuming a 50mm deep bed,
you will need approximately.....
T of Grit Sand PLUS
Kg of cement
bags @ 25Kg

Description:

Determine quantities of sand and cement required to prepare this bedding grade mortar suitable for laying patio flags.

Appears on:

3:1 Bedding Mix The area to be paved is...
square metres
Assuming a 50mm deep bed,
you will need approximately.....
T of Grit Sand
bags @ 25Kg]
PLUS
Kg of cement
bags @ 25Kg]

Description:

Determine quantities of aggregates required to prepare this lean mix concrete.

Appears on:

Bricklaying Mortar The area of brickwork to be laid is
square metres
You will need approximately.....
Kg of sand
Kg of cement
Don't forget the plasticiser!

Description:

Calculate approximate quantities of sand and cement needed for bricklaying projects.

Appears on:

Gradient Calculators

Fall Calculator Enter distance (run) and gradient required: Distance = m Gradient = 1: You will need approximately.....
mm of fall over that distance Which is equivalent to...
mm of fall per linear metre

Description:

Calculate amount of fall required for any ration over any distance

Appears on:

To convert a gradient percentage to a ratio: Gradient = % ...is equivalent to a ratio of...
1:

Description:

Convert a gradient percentage to a ratio

Appears on:

To convert a gradient ratio to a percentage: To convert a gradient ratio to a percentage: Ratio = 1: ...is equivalent to a gradient of... %

Description:

Convert a gradient ratio to a percentage

Appears on:

Calculators for Flags

BS Flags Coverage The area to be paved is
m²
Choose ONE size only. You will need approximately.....
Large Element
Size A [450x600mm]...OR
Size B [600x600mm]...OR

Size C [750x600mm]...OR
Size D [900x600mm]
Small Element
Size E [450x450mm]...OR
Size F [400x400mm]...OR
Size G [300x300mm]
Remember to allow for wastage

Description:

Estimate just how many BS flags are needed to cover a given area.

Appears on:

Bedding for Flags The area to be paved is
square metres
You will need approximately.....
T of sand only
OR
T of sand PLUS
Kg of cement
bags @ 25Kg]

Description:

Determine quantities of sand or sand+cement for laying flags/slabs.

Appears on:

Imperial Flag Coster The robbing sods are charging £ a piece
for a flag that's inches long
and inches wide.
That's flamin' £ per square yard!!
(£ per m²)

Description:

Calculates cost per Yd² and per m² for imperial flags.

Appears on:

Metric Flag Coster The thieving gits are charging £ a piece
for a flag that's mm long
and mm wide.
That's a whopping £ per square metre!!
(£ per yd²)

Description:

Calculates cost per m² and per yd² for metric flags.

Appears on:

5-size generator The paving will be
square metres
You will need approximately.....
@ 600x600mm
@ 600x450mm
@ 600x300mm
@ 450x450mm
@ 300x300mm

Description:

Estimates number of each size of flag from a 5-size range needed to pave a given area.

Appears on:

6-size generator The paving will be
square metres
You will need approximately.....
@ 600x600mm
@ 600x450mm
@ 600x300mm
@ 450x450mm
@ 450x300mm
@ 300x300mm

Description:

Estimates number of each size of flag from a 6-size range needed to pave a given area.

Appears on:

9-size generator The paving will be
square metres

You will need approximately.....
@ 900x600mm
@ 750x750mm
@ 750x600mm
@ 600x600mm
@ 600x450mm
@ 600x300mm
@ 450x450mm
@ 450x300mm
@ 300x300mm

Description:

Estimates number of each size of flag from a 9-size range needed to pave a given area.

Appears on:

Calculators for Jointing

Pitch Jointing Paver length mm
Paver width mm
Joint width mm
Joint depth* mm
* using solid pitch joint
You will need approximately.....
Kg of pitch per m²

Description:

Estimates quantity of pitch required to joint a given area of setts.

Appears on:

Polymeric Jointing Paver length mm
Paver width mm
Joint width mm
Joint depth mm
You will need approximately.....
Kg of polymeric per m²

Description:

Estimates quantity of one-part polymeric jointing mortar required to joint a given area of paving.

Appears on:

Resin Mortar Jointing Paver length mm
Paver width mm
Joint width mm
Joint depth mm
You will need approximately...
Kg of resin grout per m²

Description:

Estimates quantity of Two-Part Resin jointing mortar required to joint a given area of paving.

Appears on:

Splitt Aggregate Jointing Paver length mm
Paver width mm
Joint width mm
Joint depth mm
You will need approximately...
Kg of splitt per m²

Description:

Estimates quantity of Splitt Aggregate required to joint a given area of paving.

Appears on: