Our calculators
Interior Cost Calculator
Full-home estimate from carpet area and finish.
→2BHK Cost Calculator
Room-by-room, choose your scope.
→3BHK Cost Calculator
Room-by-room for a 3BHK.
→Modular Kitchen Calculator
By running feet, carcass, finish and hardware.
→Office Fit-Out Calculator
Per sq ft by specification and shell type.
→Renovation Calculator
Priced by what you actually change.
→Office Space Calculator
How much office your headcount needs.
→Mumbai Quote Benchmark
Check whether a quote you received is fair.
→Every calculator publishes the rate bands and formula it uses. They are indicative estimates, not quotations — a real price depends on your drawings, site condition and material selection.
Design and build under one accountable roof
Everything in this section
All 92 tools and calculators pages:
- 1BHK Interior Cost Calculator
- 3D Room Visualizer
- 4BHK & Villa Interior Cost Calculator
- AC Tonnage Calculator
- Art Hanging Height Calculator
- Backsplash Tile Calculator
- Balcony Garden Planner
- Bathroom Layout Planner
- Bathroom Renovation Cost Calculator
- Bed Size Calculator
- Blinds Size Calculator
- Room-wise Budget Allocation Calculator
- Kitchen Cabinet Dimensions Calculator
- Café Layout Calculator
- Carpet Area ↔ Built-Up Area Converter
- Ceiling Fan Size Calculator
- Civil Work Cost Estimator
- Clinic Layout Calculator
- Interior Colour Palette Generator
- Countertop Area Calculator
- Coworking Desk Density Calculator
- Curtain Fabric Calculator
- Demolition Cost Estimator
- Designer vs Contractor Cost Comparison
- Dining Table Size Calculator
- Number of Downlights Calculator
- Electrical Points Estimator
- False Ceiling Cost Calculator
- Simple Floor Plan Drawer
- Flooring Cost Calculator
- Furniture Arrangement Planner
- Glass Partition Cost Calculator
- GST on Interior Work Calculator
- Gym Equipment Space Calculator
- Gypsum Partition Cost Calculator
- Home Theatre Room Calculator
- Hotel Room Interior Cost Calculator
- Interior Loan EMI Calculator
- Interior Style Quiz
- Kids Room Planner
- Kitchen Layout Planner
- Kitchen Renovation Cost Calculator
- Kitchen Work Triangle Calculator
- Laminate Sheet Calculator
- LED Strip & Cove Light Calculator
- Room Lighting Lux and Lumens Calculator
- Loft Storage Calculator
- Marble Flooring Cost Calculator
- Material Cost Comparison Tool
- MDF & HDHMR Board Calculator
- Meeting Room Size Calculator
- Mirror Size Calculator
- Mood Board Builder
- Office Renovation Cost Calculator
- Office Seating Capacity Calculator
- Paint Colour Visualizer
- Paint Quantity Calculator
- House Painting Cost Calculator
- Interior Payment Schedule Calculator
- Plumbing Points Estimator
- Plywood Sheet Calculator
- Pooja Room Size Calculator
- Interior Project Timeline Estimator
- Quartz vs Granite Cost Calculator
- Restaurant Seating Capacity Calculator
- Retail Store Fixture Calculator
- Room Colour Scheme Tool
- Room Size Calculator
- Rug Size Calculator
- Salon Station Calculator
- Shoe Rack Size Calculator
- Shower Area & Glass Partition Calculator
- Showroom Display Area Calculator
- Sofa Size Calculator
- Sq Ft ↔ Sq M Converter
- Staircase Calculator
- Storage Needs Calculator
- Study & Home Office Ergonomics Calculator
- Tile Quantity Calculator
- TV Size & Viewing Distance Calculator
- Vaastu Direction Checker
- Vaastu Room Placement Tool
- Bathroom Vanity Size Calculator
- Veneer Area Calculator
- Vitrified Tile Cost Calculator
- Walk-in Closet Planner
- Wallpaper Roll Calculator
- Wardrobe Cost Calculator
- Wardrobe Layout Planner
- Waterproofing Area Calculator
- Wooden Flooring Cost Calculator
- Workstation Count Calculator
Selected work by Greenbox Design Studio. Tap any image to enlarge.
Frequently asked questions
Are these calculators free?+
Yes, entirely free with no sign-up required. Each one publishes the rate bands and the formula it applies, so you can verify the arithmetic or compare it against another quote.
How accurate are the calculators?+
Typically within 10–15% of a final quotation for a standard project, because they use the same rate bands our estimators apply. They cannot account for your specific drawings, site condition or material brands.