Trade unit conversions
Millimetres to inches, psi to kPa, AWG to mm², yards to tons, fractions to decimals and slope angles — both ways. Every one works in feet and inches or in metric — flip the switch at the top and the numbers you have typed convert with it.
8 tools
- All converters the unit-conversion hub in one place
- Units & fractions tape chart in sixteenths and exact unit factors
- mm to inches millimetres ↔ inches, with a tape fraction
- psi to kPa psi ↔ kPa ↔ bar
- AWG to mm² wire gauge ↔ area & diameter
- Cubic yards to tons volume ↔ weight by material density
- Fraction to decimal inch fractions ↔ decimal inches
- Degrees to % slope angle ↔ grade % ↔ ratio
Nothing in this drawer matches. Try the full index, which searches every tool.
Which one do I need?
Both ways, live, with tape fractions where a tape is involved. For every unit at once, the converters hub does it in one box.
- Millimetres on a drawing, inches on your tape? mm to inches calculator →
- A fraction of an inch as a decimal? Fraction to decimal calculator →
- Yards of gravel to tons? Cubic yards to tons calculator →
- Everything at once? All converters calculator →
The other drawers
- Concrete & masonry
- Framing & carpentry
- Site & landscape
- Finishes & interior
- Measure & layout
- Electrical
- Plumbing & HVAC
- Shop & equipment
- Every tool
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