Interior Design Budget Calculator: Estimate Room Costs

Planning a room makeover but not sure how much it might cost? Our Interior Design Budget Calculator helps you estimate the cost of decorating or updating your living room, bedroom, or kitchen.

Choose your room type, select a budget level, enter your room dimensions, and adjust the estimated costs to match your plans. You can also select USD, GBP, or CAD and add a contingency allowance for unexpected expenses.

Whether you are refreshing a small bedroom, furnishing a comfortable living room, or planning a kitchen update, this free calculator gives you a starting point for organizing your expenses. Use the results to compare costs, prioritize essential items, and create a budget that suits your needs.

Remember that the figures are illustrative estimates, not guaranteed prices. Actual costs depend on your location, material choices, labor rates, room condition, and project requirements.

Interior Design Budget Calculator

Choose a room, set your budget level and adjust any cost to match your plans. Your estimate updates as you type. Nothing you enter is saved or sent anywhere.

Jump to results

Room and budget level

Room
Budget level

Room size (optional)

Measurement unit

Room area is shown for reference only. It does not change your item costs, so adjust prices yourself if a bigger room needs more materials.

Estimated costs

Edit any amount to match your own quotes or shopping list. Leave a field blank or at 0 to leave that item out. Changing the room, country or budget level resets these amounts to fresh sample prices.

Contingency allowance

A contingency covers price changes, delivery costs and unexpected extras. Many people choose a buffer; larger or older projects often justify a bigger one.

Interior Design Budget Estimate

Estimated total budget

Subtotal
Contingency
Room area

Itemized breakdown

Estimated cost of each expense category
Category Estimate Share
Subtotal 100%

Please note: Sample prices are illustrative estimates, not quotes or verified current market prices. The country selector changes the currency and the sample figures only; it is not a live exchange-rate converter. Real costs vary with location, room size, materials, labor and project scope, so replace the samples with your own local prices for a more useful result.

⭐ Frequently Asked Questions
Is the Interior Design Budget Calculator free to use?

Yes. You can use the calculator to create an initial estimate for a living room, bedroom, or kitchen without paying a fee.

Are the calculator’s prices accurate for my location?

The displayed amounts are illustrative estimates, not verified current market prices or contractor quotes. Costs vary by country, city, supplier, material quality, labor, and project scope. Enter local prices for a more useful estimate.

Can I use the calculator for a kitchen renovation?

Yes. Select Kitchen to estimate expenses such as cabinets, countertops, appliances, lighting, flooring, and installation. Major plumbing, electrical, or structural work may require additional quotes.

What is a contingency allowance?

A contingency allowance is extra money set aside for unexpected costs. For example, a 10% allowance on a $2,000 subtotal adds $200, making the estimated total $2,200.

Does the calculator convert USD, GBP, and CAD using live exchange rates?

No. The currency selector changes the currency display and illustrative sample figures. It does not use live exchange rates. Enter prices in your chosen currency using local supplier quotes for a more accurate budget.

Can this calculator replace a professional interior designer or contractor?

No. It is a preliminary planning tool. Complex renovations and projects involving structural, electrical, or plumbing work may require qualified professionals and location-specific permits.