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Trades
Reference math for the jobsite.
Carpentry fractions, electrical reference, HVAC and plumbing conversions — mobile-first, shareable URLs, no install.
Architecture
Scales, room volume, geometry — pure architectural math.
Architectural scale conversion, room volume for HVAC sizing, cylinder volume for columns and tanks, and mixed-unit math. For architects, drafters, and students.
Measurement
Dimensions, area, and volume — one quick converter.
Length × width × height in one shot. Renovation calculators (paint, deck, plywood cut, stairs, roof pitch) moved to our companion site RenoSheets.
Cooking
Kitchen calculators for scaling recipes and swapping pans.
Recipe scaling, pan substitution, and ingredient weights — with more kitchen tools on the way.
Finance
Clear money calculators for Canadian and US numbers.
Mortgage math for Canada and the US — the right compounding for each, CMHC or PMI insurance, and side-by-side comparison.
Companion site
Renovation — RenoSheets
Paint, deck, tile, drywall, flooring, roofing, concrete — complete buy-lists and a Kanban project planner.