SVG
Scalable vector artwork. Often useful for laser design workflows. Physical size can depend on width/height units and application import behavior.
Laser Tools & Calculators
FREE LASER & CNC TOOLS
Laser Tools & Calculators
Practical calculators for laser cutting, engraving, kerf, slots, tabs, circles, materials and CNC machining. Get useful measurements before you start cutting.
Tool 01
Laser Kerf Calculator
Calculate the approximate kerf of your laser cut by comparing the nominal design dimension with the measured finished piece.
Estimated kerf
This is an estimate based on the dimensions
you entered. Test on your actual machine
and material.
Kerf = Nominal dimension − Measured piece dimension
Tool 02
Slot & Tab Calculator
Estimate a starting slot or tab dimension using your measured material thickness and kerf.
Use 0 for a nominal starting point.
Positive values make the slot looser.
Suggested starting dimensions
Slot ≈ Material thickness + Kerf + Clearance
Tab ≈ Material thickness − Kerf
Tab ≈ Material thickness − Kerf
Tool 03
Laser Power & Speed Calculator
Compare laser power and speed using a simple normalized index. This is a comparison tool, not a universal recommended machine setting.
Power / speed index
This is a simplified comparison only.
Actual laser results depend on machine,
optics, material, focus, air assist and
other factors.
Index = Power ÷ Speed × 1000
Tool 04
Material Thickness Calculator
Compare nominal material thickness with the actual thickness measured using a caliper.
Thickness difference
Difference = Measured − Nominal
Tool 05
Laser Circle Accuracy Calculator
Compare your designed circle diameter with the finished measured diameter to identify dimensional deviation.
Diameter deviation
Deviation = Measured diameter − Designed diameter
Tool 06
Laser Kerf Compensation Calculator
Calculate a simple starting compensation value from your measured kerf. The direction depends on whether you are creating an external profile or an internal feature.
Half-kerf compensation
Half-kerf compensation = Kerf ÷ 2
Tool 07
CNC Feed Rate Calculator
Calculate CNC feed rate from chip load, spindle RPM and number of cutting edges.
Calculated feed rate
Use this as a starting calculation.
Real-world cutting conditions depend on
tool geometry, material, rigidity, depth of cut
and machine capability.
Feed Rate = Chip Load × RPM × Flutes
Tool 08
CNC RPM Calculator
Calculate approximate spindle RPM from surface speed and tool diameter.
Approximate spindle speed
Check your machine and tool manufacturer's
recommended operating range before using
the calculated RPM.
RPM = (Surface speed × 1000) ÷ (π × Tool diameter)
Laser & CNC Tools FAQ
What is laser kerf?
Kerf is the material removed by the laser beam during cutting. Its actual value can change with the machine, lens, focus, material, speed, power, air assist and other cutting conditions.
Why should I measure my material thickness?
Materials sold with a nominal thickness can vary. Measuring the actual sheet can help you create better-fitting slots, tabs, joints and assemblies.
Can the Power & Speed calculator tell me the perfect laser settings?
No. Laser settings are machine- and material-dependent. The tool provides a simple comparison index. Use a physical test grid to determine practical settings.
How do I calculate CNC feed rate?
A common starting formula is Feed Rate = Chip Load × RPM × Number of Flutes. Always verify the result against your tool and machine limitations.
Why is my laser-cut circle not exactly the designed size?
Dimensional differences can come from kerf, calibration, mechanics, focus, material movement, cutting settings and other machine-specific factors. Measure a test circle before applying compensation.
Does kerf stay exactly the same for every material?
No. Kerf can change with material type, thickness, focus, optics, power, speed, air assist and machine condition. Measure it on the material you actually plan to cut.
Need Free Laser Test Files?
Test kerf, power, speed, cutting, engraving, diode lasers, CO2 lasers and LightBurn with our free laser test collection.
Explore Free Laser TestsFREE DESIGN FILE TOOL
Universal Laser & CNC File Helper
Check file dimensions, convert units and prepare a resized SVG or raster image before opening it in your laser or CNC software.
Browser-supported conversions stay on your device. When server conversion is enabled, selected files are uploaded to the configured conversion provider for processing.
01
Upload and analyze a file
SVG/raster processing + basic ASCII DXF geometry import · 81 machine profiles
Drop your design file here
Import: SVG, SVGZ, DXF, AI, EPS, PDF, PLT, HPGL, PNG, JPG, JPEG, WebP, BMP, TIF, TIFF, GIF (format processing varies)
Maximum file size: 10 MB. SVG, DXF and PNG/JPG/WebP work is processed in this browser. Other formats (SVGZ, AI, EPS, PDF, PLT, HPGL, BMP, TIF, TIFF, GIF) are sent to the DESIGNEROOH conversion service when selected.
Choose a file to begin.
FILE
02
File analysis
Reported dimensions are separated from assumptions.
Format—
Canvas / image—
UnitsUnknown
Dimension statusNot analyzed
Dimensions will appear after a supported file is analyzed. Canvas dimensions are not necessarily the drawing's actual geometric bounds.
PreviewVisual reference only
Your preview will appear here
03
Unit converter & resize
Enter the physical size you want the exported file to represent.
Only conversions available for the selected file are shown. SVG, basic DXF (from simple SVG shapes), PNG, JPG/JPEG and WebP are created in your browser; the other formats are produced by the conversion service. The tool will not create a fake file.
Used only for pixel-to-physical conversion.
For SVG, resizing changes physical width/height while preserving the viewBox coordinate system. Unlocking aspect ratio may stretch the design. SVG effects, strokes, text, clipping, patterns and filters can render differently across applications.
Size comparison
Original / detected—
Requested output—
Scale factor—
Shape changeNo change calculated
Choose an output format, then apply dimensions. DXF output supports basic SVG geometry only; other formats are produced by the conversion service.
03A
Standalone unit converter
Convert a measurement without uploading a file.
100 mm = 3.937008 in. Pixel conversion uses the DPI assumption set in the resize panel.
04
VCarve size-correction assistant
Use explicit target dimensions when the source file does not declare a reliable physical size.
Recommended import workflow
- Check the source file's dimensions before importing.
- In VCarve, confirm the job setup units and material size.
- Import the SVG/DXF, then measure a known edge with the measuring tool.
- If it is wrong, select the vectors and scale them using a known target width or height.
- Check the design stays inside the work area and save a new copy.
Why SVG size can be confusing
The viewBox describes drawing coordinates. The SVG width and height describe its displayed canvas size. A file with only a viewBox does not reliably tell us the intended real-world size.
Important: this tool cannot verify the result inside VCarve. Always measure the imported vectors before machining.
05
Machine & workflow finder
Search your own verified database or use general workflow guidance.
81 machine models included · Use the exact-model menu or search. Compatibility must be confirmed in manufacturer documentation.
Loading machine profiles…
Choose your software to see general next steps. File compatibility depends on software, controller, firmware and workflow—not only the machine brand.
06
Formats & workflow guide
Know what a file contains before sending it to a machine.
DXF
Common CAD exchange format. Unit conventions and supported entities vary. ASCII DXF import supports LINE, CIRCLE, ARC (approximated as line segments), LWPOLYLINE without bulge arcs, POLYLINE and POINT. Other entity types are reported as skipped.
May contain vector paths, raster images, or both. Page size is not necessarily the design bounds. PDF processing is handled by the conversion service.
PNG / JPG
Made of pixels. Useful for image engraving; pixel count and DPI determine an assumed physical size. Raster images are not cutting vectors.
PLT / HPGL
Plotter vector formats used by some cutters and engravers. Conversion is handled by the conversion service; verify units and line settings in your software.
A design file is not the same as ready-to-run machine instructions. CNC routing usually requires CAM toolpaths; laser work still requires checking material thickness, kerf, focus, power/speed, air assist, origin and work area.
07
Help center & troubleshooting
Search common problems and follow the next checks.
My file is too small in VCarve
Check the job units, then measure a known vector. If the source has no physical units, enter the intended width or height explicitly and scale in VCarve or use the SVG resize controls above.
My file is too large
Check whether inches were interpreted as millimeters or vice versa. 1 inch equals 25.4 mm. Confirm the selected job units before scaling.
Should I use millimeters or inches?
Use the units configured for your job and workflow. Avoid switching units mid-workflow without checking dimensions. 1 in = 25.4 mm; 1 cm = 10 mm; 1 m = 1000 mm.
My SVG opens with the wrong size
SVG viewBox coordinates are not automatically millimeters or inches. Check width/height and units, import dimensions in your design software, and measure a known edge before machining.
My DXF imports incorrectly
Check the exporting application's DXF version, units, scale, layers and entity support. This browser tool does not modify DXF files; re-export from CAD software or inspect in a trusted DXF editor.
My machine does not recognize the file
Identify the software/controller workflow first. Import a design into supported design/CAM software, then export or generate the machine-specific job format required by that workflow.
The preview differs from the downloaded file
Preview rendering may not match every application's treatment of fonts, strokes, filters, clipping or embedded resources. Open the downloaded output in your intended software and verify dimensions.
Which format should I use for laser cutting or engraving?
Use SVG or DXF for clean vector cutting paths and PNG/JPG for image engraving. PDF, AI and EPS can hold vectors but should be checked after import. Always confirm which formats your laser software accepts.
How do I select the correct file from my Mega Pack?
Start with the product's included format list. Choose SVG for supported vector workflows, DXF for compatible CAD/CAM software, and raster images for image engraving. Check the listing and your software's import requirements.
Final troubleshooting path
1. FileDoes it open and contain the expected geometry?
2. UnitsDo the dimensions match a known measurement?
3. SoftwareDoes your design/CAM app support the format and features?
4. ControllerAre you exporting the required machine job format?
5. Machine setupCheck origin, work area, material, tool/kerf and safe settings.