💡 Tip: Add oil first, then petrol on top. Shake well before use.
Recent mixes
🛢️
Enter fuel amount & select a ratio above
🧱
Block Weight
Rectangle or irregular shape × depth × 2.4
▭ Rectangle
⬡ Irregular Shape
📏 How to use: Enter the length and width in metres, and the depth in millimetres.
① Enter block dimensions
Length (metres)
m
in
Width (metres)
m
in
Depth (millimetres)
mm
① Grid size per cell
② Draw block shape
🟠 Tap corners · 🟢 Green ring = close shape
💡 Draw the approximate shape — you can enter the exact dimensions in Adjust Side Lengths as long as you have the correct number of sides.
③ Depth
mm
③ Adjust side lengths
Type to fine-tune
Each side of your shape is listed below. Enter an exact length to move that corner and recalculate.
⬡
Draw shape above then close it
Draw Block Shape
Tap corners · Green ring = close shape
💡 Draw approximate shape — adjust exact dimensions in side lengths below
0 points
Block Weight
—
kilograms
—
Calculation breakdown
Volume—
Concrete density2.4 t/m³
Weight—
Block shape — top view
Individual block — 3D view
💡 Note: Uses 2.4 t/m³ — standard for reinforced concrete.
🧱
Enter block dimensions above
Cut Size
Plan cuts for rectangles & irregular shapes
① Grid size per cell
Each square = one cell. Corners snap to grid intersections. Use larger cells for big slabs.
② Draw your slab shape
🟠 Tap to place corners · 🟢 Green ring = tap to close shape
💡 Draw the approximate shape — you can enter the exact dimensions in Adjust Side Lengths as long as you have the correct number of sides.
Draw Slab Shape
Tap corners · Green ring = close shape
💡 Draw approximate shape — adjust exact dimensions in side lengths below
0 points
③ Adjust side lengths
Type to fine-tune
Each side of your shape is listed below. Enter an exact length to move that corner and recalculate.
④ Slab depth
mm
Full penetration removal
Treat the slab as a penetration — cuts the full outer perimeter too
⑤ Block size
By Weight
By Dimensions
500 kg
5 kg1 t
kg
t
Resulting block dimensions
Length
—
m
Width
—
m
m
in
m
in
Resulting block weight
—
Slab Area
—
m²
Total Weight
—
Block Count
—
pieces
Block Weight
—
Block dimensions
—
Cut depth
—
Total cut
—
Cut layout preview
Blocks shown clipped to shape boundary. Perimeter blocks will be partial pieces.
Penetration — 3D view
Individual block — 3D view
Full-size internal block — edge pieces will be smaller
💡 Note: Uses 2.4 t/m³. Block weights are for full internal blocks — edge pieces will be lighter. Add them separately for total piece count.
or switch back to rectangle
① Slab dimensions
m
in
m
in
mm
kg
Full penetration removal
Treat the slab as a penetration — cuts all 4 outer edges too
② Block Size
By Weight
By Dimensions
500 kg
5 kg1 t
kg
t
Resulting block dimensions
Length
—
m
Width
—
m
Depth
—
mm
m
in
m
in
Resulting block weight
—
🔓
Penetration removal
All 4 edges cut free — total slab weight must be lifted out
Penetration weight
—
Blocks
—
pieces
Columns
—
along length
Rows
—
along width
Slab plan — cut layout
Cut lines
Penetration — 3D view
Individual block — 3D view
All blocks are identical — dimensions shown on faces
Block breakdown
💡 Note: Uses 2.4 t/m³ concrete density. Blade kerf not included — add 3–4 mm per cut for precise work.
Enter slab dimensions or draw an irregular shape
Drill Angle
Core drilling through floors & walls
① Drilling surface
🏗️ Floor
🧱 Wall
② Dimensions
mm
mm
in
③ Rig anchor distance at 90°
The distance from the entry point centre to the rig anchor point when drilling straight (90°). Default is 360mm for Hilti DD350 — change for your rig.
⚠️ Remember: For larger core diameters, add step-out distance to this value — the anchor point must clear the full radius of the entry ellipse.
mm
④ Drill angle
60°
15°30°45°60°75°90°
°
mm
Total Drilled
—
mm — min bit / barrel / core length
Barrel Length +10% Safety
—
mm — without partial core removal
Entry→Exit Offset
—
Anchor Dist
—
Entry Opening
—
Core Length
—
mm — centre entry to centre exit
Cross-section — Floor
—
Barrel diagram — Floor
Plan view — rig setup
Anchor distance from entry centre—
Entry hole opening — long axis
Ellipse on entry surface, measured along drill direction
—
Entry hole opening — short axis (= barrel ø)—
Entry → exit centre offset
How far apart entry & exit centres are on the surface
—
Core length
Centre entry to centre exit — straight-line path through material
—
Core weight
Concrete cylinder removed @ 2400 kg/m³
—
💡 Tip: Mark both entry and exit centre points before drilling. The entry ellipse long axis shows the actual surface opening to mark out. Bit/barrel length = the total distance drilled — order a barrel at least this long.
Enter hole diameter and concrete thickness above
Stitch Drilling
Plan hole patterns for concrete penetrations
① Circle diameter
mm
or switch back to rectangle
① Grid size per cell
② Draw penetration shape
🟠 Tap to place corners · 🟢 Green ring = tap to close shape
💡 Draw the approximate shape — you can enter the exact dimensions in Adjust Side Lengths as long as you have the correct number of sides.
Draw Penetration Shape
Tap corners · Green ring = close shape
💡 Draw approximate shape — adjust exact dimensions in side lengths below
0 points
③ Adjust side lengths
Type to fine-tune
Each side of your shape. Enter an exact length to move that corner.
or switch back to rectangle
① Penetration dimensions
m
in
m
in
② Penetration depth
mm
kg
② Core settings
mm
mm
Standard
Clean Edge
Core centre sits inside the perimeter — leaves a small scallop on the inside face.
③ Internal grid (optional)
Perimeter Only
+ Internal Grid
By Dimensions
By Weight
mm
mm
Resulting block weight
—
500 kg
10 kg3 t
Resulting block dimensions
Length
—
Width
—
Total Cores
—
cores
Perimeter
—
cores
Internal
—
cores
Core pattern — top view
30 mm
Centre-to-centre spacing: — mm
Perimeter core
Internal core
Stitch pattern — 3D view
Drilling data
Total drill depth
—
metres
Material removed
—
kg by coring
Centre spacing
—
Penetration weight
—
Each core weight
—
kg per core
Remaining weight
—
kg after coring
Net block weight
—
—
—
Blocks
—
💡 Tip: Start corner cores first, then work along each side.
⭕
Enter penetration dimensions to get started
Overcuts
Calculate corner overcuts & stitch drilling
Inputs
Concrete thickness
mm
Flange diameter
mm
Blade diameter
mm
Results
Minimum blade needed for full depth
—
Actual cut depth
—
mm
Overcut at corner
—
mm past corner line
Flange position
—
Blade reaches full depth?
—
Corner stitch drilling
—cores
Cross section
⚠️ Show overcut
🔩 Stitch to avoid overcut
Corner stitch drilling
Core drill diameter
mm
Core overlap (eliminates web between holes)
5mm
📐
Level & Angle
Use your phone as a level or angle gauge
iOS requires permission to access motion sensors
⬜ Bubble Level
📐 Angle
Lay phone flat on surface
Left / Right
—
degrees
Front / Back
—
degrees
💡 Tip: Place your phone on the surface with the screen facing up. Green bubble = level.
Sit phone upright on its bottom edge
0° = perfectly plumb. Tilt left or right to read angle.
—
degrees
💡 Tip: Sit the phone on its bottom edge. 0° = plumb vertical. Only left/right tilt changes the reading — forward/back lean has no effect.
