Every tool
Workshop Calculators
Find the calculator by name, measurement, or the problem you are trying to solve.
Fraction to Decimal
Convert fractions and mixed numbers into decimals, millimeters and percentages.
Decimal to Fraction
Find the nearest common fraction and see exactly how much rounding changed the number.
Metric and Imperial Converter
Convert mixed workshop measurements in either direction.
Feet and Inches Calculator
Add, subtract, multiply and divide feet, inches and fractions.
Measurement Difference
Compare two measurements and see how far one is above or below the other.
Scale Drawing
Convert between drawing scale and actual size.
Equal Spacing
Divide a length into equal gaps.
Equal Hole Spacing
List every hole center from one edge.
Center Point
Find a midpoint between measurements or coordinates.
Right Triangle
Calculate missing sides, angles, slope, area, and perimeter.
Bolt Circle
Lay out evenly spaced holes around a bolt circle with angles and coordinates.
Circle and Arc
Work out circumference, area, arc length, chord length and segment height.
Board Foot
Calculate lumber volume, waste allowance and estimated cost.
Saw Kerf
Calculate blade loss, required stock and remaining material.
Lumber Weight
Estimate lumber weight by species, dimensions and moisture.
Material Weight
Estimate weight from material, shape, dimensions and quantity.
Bearing Dimensions
Compare bearing bore, outside diameter and width in mixed units.
Pulley Ratio
Calculate output speed, ratio, belt travel and theoretical torque change.
Gear Ratio
Calculate output speed, rotation direction and theoretical torque change.
LED Resistor
Calculate resistance, current and resistor wattage for an LED circuit.
Speaker Impedance
Calculate the nominal load of matching speakers in common wiring arrangements.
Ohm’s Law
Find voltage, current, resistance and power from any two known values.
Epoxy Volume
Estimate mixed epoxy for pours, holes, channels and coatings.
Paint Coverage
Estimate paint from dimensions, coats, coverage and allowance.
Epoxy Mixing Ratio
Divide a batch into Part A and Part B using the specified ratio.
The launch calculator set is complete
These 25 calculators cover the first measurement, layout, woodworking, materials, mechanical, electrical, construction, and finishing tools planned for the site. Use the contact page to report a problem or suggest the next tool.