This really is the way to go, calculating the spacing of spindles using metric measurements. Especially for those of us that don't do this on a daily basis.

Board and Tape

• Drywall Materials
• Drywall Calculator for a Room
• Plasterboard Calculator Metric

Ceiling Tiles

• Dropped(Suspended)Ceiling End Tile Sizes Metric
• Dropped(Suspended)Ceiling End Tile Sizes
• Dropped (Suspended) Ceiling Materials - Metric
• Dropped (Suspended) Ceiling Materials

Flooring

• Flooring Calculator - Metric
• Flooring Calculator
• Hardwood Flooring Calculator
• Starter Board Size for Hardwood or Laminate Flooring

Insulation

• Insulating an Attic Using Blown Insulation
• Insulating Using Blown Insulation - Metric
• Wall Insulation plus Cost
• Wall Insulation plus Cost Metric
• Wall Insulation for Multiple Height Walls
• Convert R values to RSI values
• Convert R values to U values

Paint and Wallpaper

• Paint Calculator
• Paint Calculator Metric
• Paint Calculator - Wall and Trim
• Wallpaper Calculator - Metric
• Wallpaper Calculator

Spindles

• Spindle Count
• Spindles Required & Spacing
• Spacing of Spindles in Millimetres

Tiles

• Tiles - Area Tiling Layout
• Tile Calculator
• Tiles Needed for Tiling an Area in Square Feet
• Tiles Needed for Tiling an Area in Square Meters - Metric