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Tool Directory
All Tools
Every Vriksai calculator in one place — 62 free professional tools across 7 categories. Pick a category below.
Wood Selection & Material Science
For researchers choosing and understanding timber — 8 tools
EMC Calculator
Equilibrium moisture content from temp and humidity
Shrinkage Predictor
Radial, tangential and volumetric shrinkage
Green Weight Calculator
Weight of green timber by volume and species
Kiln Schedule Finder
Drying time and temperature schedule
Fiber Saturation Calculator
Find the fiber saturation point of a species
Moisture Tracking Tool
Track drying progress over time
VPD Calculator
Vapour pressure deficit for kiln scheduling
Acclimation Calculator
Days to acclimatise timber to a room
ThermoWood & Modified Wood
Modified timber performance, cost and service life — 4 tools
Timber Measurement & Forestry
Log rules and volume for traders and importers — 10 tools
Doyle Log Rule
Board-foot volume by the Doyle scale
Scribner Log Rule
Board-foot volume by the Scribner scale
International Log Rule
Board-foot volume by the International 1/4-inch rule
Hoppus Calculator
Round-log volume by the Hoppus system
Smalian Formula
Log volume from end diameters and length
Huber Formula
Log volume from mid diameter and length
Log Taper Calculator
Taper rate along a log
Bark Deduction Tool
Net wood volume after bark allowance
Sawdust Waste Estimator
Kerf and sawdust loss in milling
Standing Tree Volume
Estimate volume of a standing tree
Manufacturing & Production
For factories and production teams — 10 tools
Cut List Optimizer
Best cut layout to minimise waste
Kerf Loss Calculator
Material lost to saw kerf
Kerf Bending Calculator
Cut spacing and depth to bend sheet to a radius
Veneer Layup Tool
Plan balanced veneer construction
CNC Feed Calculator
Feed and speed for router bits
Edge Band Calculator
Edge banding length and cost
Veneer Matching Tool
Book, slip and other match patterns
Bending Radius Calculator
Minimum safe bend radius
MDF Weight Calculator
Sheet weight by thickness and size
Hardware Position Tool
Hinge and handle placement
Nesting Efficiency Calculator
Sheet utilisation for nested parts
Joinery & Furniture Engineering
For furniture makers and cabinetmakers — 11 tools
Sag & Deflection Calculator
Shelf and beam deflection under load
Golden Ratio Designer
Harmonious furniture proportions with phi
Expansion Gap Calculator
Wood movement gaps for panels and tops
Screw Spacing Calculator
Withdrawal and shear capacity by screw
Screw Strength Calculator
Withdrawal and shear capacity by screw
Dovetail Generator
Pin and tail layout for any board
Box Joint Calculator
Even finger-joint spacing
Mortise & Tenon Calculator
Proportioned mortise and tenon sizing
Ring Segment Calculator
Segments for stave and ring builds
Compound Miter Solver
Angles for compound mitre joints
Drawer Reveal Calculator
Even gaps around drawer fronts
Construction & Installation
For architects, builders and contractors — 8 tools
Flooring Coverage Calculator
Planks, packs and cost for any room
Floor Span Calculator
Joist sizing with pass/fail check
Stair Geometry Tool
Risers, going, pitch and Blondel check
Glue Consumption Tool
Adhesive needed by area and joint
Sanding Sequence Planner
Grit-by-grit sanding progression
Wind Load Calculator
Design pressure and force on a surface
Timber Post Calculator
Post sizing for compression and buckling
Wood Finish Drying Time
Touch, recoat and cure times
Import & Commercial
Built for importers and traders — 10 tools
Volume Converter
m3, CFT, board feet, Hoppus and more
Lumber Price Converter
Price per unit across all volume units
Yield Estimator
Recovery and effective cost from log to product
NHLA Calculator
Hardwood grade from surface measure and yield
Container Optimizer
Packages per container by weight and volume
Janka Database Tool
Hardness for 60 species, lbf and Newtons
Sealer Cost Calculator
Sealer litres, packs and cost
Waste Margin Calculator
Gross input needed for a finished quantity
Volumetric Weight Calculator
Actual vs volumetric chargeable weight
Import Cost Calculator
Full landed cost with Indian duty structure