Free · No sign-up
Steel Stock Cutting and Waste Calculator
Dividing stock length by part length can overstate the number of pieces you can cut. Blade kerf and end trimming consume material too. This tool estimates stock requirements for identical straight cuts and separates the types of loss.
Your dimensions
For equal-length parts and straight cuts. This is not a mixed-length optimizer and does not model angled cuts, bending or two-dimensional sheet nesting. Verify actual machine settings.
Calculation results
- Stock lengths required
- 5
- Maximum pieces per stock
- 4
- Useful length yield
- 93.33%
- Total remaining offcuts
- 1,940mm
- Total blade loss
- 60mm
- Total end trim
- 0mm
How to use this tool
- Enter stock and finished part lengths in millimetres; a 6 m stock length is 6000 mm.
- Enter the number of parts, actual blade kerf and combined material lost at both ends of each stock.
- Check stock count, reusable offcuts and blade loss. End trim must include any kerf consumed by the end-trimming cuts.
Calculation formula
usable = stock − trim; N = floor(usable ÷ (piece + kerf))
After end trim is deducted, each part normally consumes one kerf. If the last piece ends exactly at the stock end, it needs no extra separation cut. Stock count rounds up, and offcuts include the partly used final stock.
Worked example
For twenty 1400 mm pieces from 6000 mm stock, a 3 mm kerf and no end trim allow four pieces per stock. Five stocks are needed, with 60 mm of blade loss, 1940 mm of remaining offcuts and about 93.33% useful-length yield.
Frequently asked questions
Can I cut two 3 m pieces from exactly 6 m of stock?
Not with a positive kerf. Two 3000 mm parts use all 6000 mm, leaving no material for the blade. Measure actual stock overlength and permitted part tolerance before planning the cut.
How are offcuts different from blade loss?
Blade loss is material removed during cutting. Offcuts are lengths left over that may be reusable for other jobs. The calculator lists both separately and also reports combined end-trimming loss.
Continue planning your order
Steel Pipe Weight Calculator by Diameter and Wall
Calculate round steel pipe weight per metre, per length and per order using outside diameter, wall thickness and quantity. Free formula and example.
Open calculatorSteel Coil Length Calculator from Weight
Convert net steel coil weight to length and area using width and thickness. Includes kg per metre, kg per square metre, formula and worked example.
Open calculatorRebar Bars per Tonne and Order Quantity Calculator
Convert rebar tonnage to whole bars by diameter and length. See bars within a weight limit, bars needed to meet a target and the resulting order weight.
Open calculator
Sources and calculation basis
Industry references for density and planning tools; this calculator’s method and limitations are explained above.
Last update