This planner handles both. Enter a sutar size and it shows you the exact fraction and the standard mill size it maps to, or enter the millimetre size directly if you have it from the bar. Then it gives the weight per metre, per bar and for your whole order, with a reference chart of the common sizes.

What This Tool Does

It converts sutar names to millimetres, calculates weight using the standard formula, totals your order in kilograms and maunds, prices it at a rate per kilogram or per maund, and shows a chart of the common sizes with bars per tonne.

Who It Is For

• Contractors and site staff checking a steel delivery against the invoice.
• Homeowners building a house trying to understand what has been ordered.
• Fabricators buying bar for grills, gates and frames.
• Students and site engineers wanting the formula with the arithmetic shown.

How To Use It

1. Choose whether you are working from a sutar size or a millimetre size.
2. If sutar, pick the size and decide whether to use the exact fraction or the standard mill size. The mill size is almost always the right choice for weight.
3. Enter the length of one bar. Forty feet is common from Pakistani mills, but confirm it, because lengths vary.
4. Enter how many bars.
5. Add your rate, either per kilogram or per maund, and the tool converts.

Inputs And Units Explained

• Sutar size — the market name. One sutar is one eighth of an inch, so four sutar is half an inch.
• Use the standard mill size — ticked by default. Four sutar is exactly 12.7 mm but mills roll 12 mm, and 12 mm is what you will be invoiced for.
• Bar diameter in millimetres — the direct route if you know the size from the bar itself.
• Bar length and quantity — the length of one bar and how many.
• Rate per kilogram or per maund — the tool converts at the standard 40 kg maund.

How The Calculation Works

Weight per metre uses the standard rule for deformed bar, diameter squared divided by 162, which gives 0.617 kg per metre for 10 mm, 0.888 for 12 mm and 1.58 for 16 mm. That rule is the conventional simplification of area times density, and it matches the nominal masses that mills and standards quote.

Sutar conversion is exact arithmetic: one sutar is one eighth of an inch, which is 3.175 mm, so three sutar is 9.525 mm and four sutar is 12.7 mm. The nominal mapping to 10 mm and 12 mm is a market convention rather than a precise conversion, which is why the tool shows both and lets you choose. Always confirm against the size printed on the bar, because mapping varies between markets and mills.

Worked Example

Ten bars of four sutar sariya, each 40 feet long, using the standard mill size.

Input or result	Value
Size	Four sutar, half inch, mapped to 12 mm
Weight per metre	0.888 kg/m
One 40 ft bar	about 10.8 kg
Ten bars	about 108 kg, or 2.7 maunds

One hundred and eight kilograms is what the invoice should say for ten bars. The chart alongside shows bars per tonne for each size, which is the quickest way to sanity check a large order.

Features And Benefits

• Sutar names handled properly, with the exact fraction and the mill size shown side by side.
• A reference chart of common sizes with weight per metre, per 40 foot bar and bars per tonne.
• Rates accepted per kilogram or per maund, converted at the standard 40 kg.
• The formula is shown, so the arithmetic can be checked.

Assumptions And Accuracy Limits

• Weights are nominal. Actual bars vary within rolling tolerance, and ribbing patterns differ between mills.
• Sutar to millimetre mapping is a market convention and differs between markets. Confirm against the bar.
• Grade is not considered: grade 40 and grade 60 bar of the same diameter weigh the same but are not interchangeable in design.
• This counts quantities. How much steel a structure needs is a design decision for your engineer.

Common Mistakes To Avoid

• Assuming sutar maps exactly to a metric size. Four sutar is 12.7 mm in arithmetic and 12 mm in the yard.
• Confusing grade with size. Ask for both, because they are priced differently and are not substitutes.
• Assuming every bar is 40 feet. Confirm the length before working out quantities.
• Using this to decide how much steel a slab needs. That is structural design, and this is a quantity tool.

Saria Weight Per Foot And In Kg: The Chart Builders Use

On a building site in Pakistan the bar is called sariya or saria and the size is given in sutar, meaning eighths of an inch, so a 4 sutar bar is half an inch and an 8 sutar bar is one inch. Suppliers quote by weight but the plan gives lengths, so you constantly need to convert a length in feet into kilograms.

This calculator takes the sutar size and the length and returns the weight in kilograms, and it includes the per foot figure so you can check a delivery against your order. It is a quick way to avoid being short-delivered on a bar order.

Frequently Asked Questions

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