Why this one
One calculator, every unit you're likely to have
Five unit options
Enter measurements in feet, inches, yards, meters or centimeters — no manual conversion needed first.
Three results at once
Get cubic feet, cubic meters, and cubic yards together — useful when comparing specs across regions.
Nothing kept on our servers
Every number you enter is calculated instantly in your browser and is never logged, transmitted, or stored anywhere.
One formula, whichever unit you start with
At its core, cubic feet is always Length × Width × Height — the only thing that changes based on your starting unit is a conversion step applied before or after that multiplication. Working in feet needs no conversion at all; inches needs a division by 1,728; meters needs a multiplication by roughly 35.31; and centimeters needs a division by roughly 28,317. This calculator handles that conversion automatically based on the unit you pick, so you never need to remember which factor applies where.
How to calculate cubic feet from any unit
From feet: multiply length × width × height directly — the result is already in cubic feet.
From inches: multiply the three measurements together to get cubic inches, then divide by 1,728 (the number of cubic inches in one cubic foot).
From yards: multiply the three measurements together to get cubic yards, then multiply by 27 (the number of cubic feet in one cubic yard).
From meters: multiply the three measurements together to get cubic meters, then multiply by roughly 35.3147.
From centimeters: multiply the three measurements together to get cubic centimeters, then divide by roughly 28,316.85.
Real-world examples
📦 Choosing between two storage bins
A rectangular bin measures 24 inches long, 18 inches wide, and 15 inches deep — is it bigger than a bin advertised as 2 ft × 1.3 ft × 1 ft?
Bin A (inches): 24 × 18 × 15 = 6,480 in³ ÷ 1,728 = 3.75 CFT
Bin B (feet): 2 × 1.3 × 1 = 2.6 CFT
Bin A holds noticeably more, even though its dimensions in inches look like smaller numbers at first glance — converting both to the same unit before comparing avoids that kind of mix-up.
🚚 Estimating moving truck space
A moving truck's cargo area measures 3 meters long, 1.8 meters wide, and 1.9 meters high. How much is that in cubic feet, for comparing against a packing list quoted in CFT?
3 × 1.8 × 1.9 = 10.26 m³ × 35.3147 = ~362.3 CFT
That figure can then be compared directly against a moving company's packed-volume estimate, which is often quoted in cubic feet rather than cubic meters.
When people reach for a cubic feet calculator
A few common situations
📦 Shipping & storage
Check whether a box or container fits within a courier's or storage unit's volume limit.
🧊 Appliance capacity
Compare the interior capacity of refrigerators, freezers, or ovens listed in cubic feet.
🪵 Timber & stone trade
Calculate CFT for wood, marble, or granite priced per cubic foot, with quantity and cost.
🚚 Moving & logistics
Estimate truck or container space needed for a move or shipment.
🏗️ Construction estimation
Work out material or excavation volume for a project in whichever unit your plans use.
🛍️ Online shopping
Compare product dimensions listed in different units before buying.
🎓 Learning volume math
See exactly how a volume calculation changes when the starting unit changes.
📐 Irregular spaces
Break an irregular shape into regular rectangular sections, calculate each separately, then add them together.
Calculating irregular shapes
If the space you're measuring isn't a simple rectangular box — an L-shaped storage area, for instance — split it mentally into two or more regular rectangular sections, calculate the cubic feet of each section separately using this calculator, and add the results together for the total volume. This works because volume is additive: the total space is exactly the sum of its individual rectangular parts, regardless of how they're arranged.
CFT for timber and stone — the trade-specific case
In India's timber and natural stone trade, CFT is calculated slightly differently in practice: length and width are measured in feet, but thickness is measured in inches, since it's a much smaller dimension. The formula is Length (ft) × Width (ft) × Thickness (in) ÷ 12. Switch to "Timber/Stone (ft + inch)" mode at the top of the calculator above to enter measurements exactly this way, without converting thickness to feet yourself first.
| Material | Typical thickness | Common use |
|---|---|---|
| Timber (furniture-grade) | 1" – 2" | Furniture, cabinetry, doors |
| Marble slab | 0.75" – 1" | Flooring, wall cladding |
| Granite slab | 0.75" – 1.25" | Countertops, flooring |
Quick answers for common CFT questions
Illustrative figures at typical rates — always confirm current local pricing before ordering
| Question | Typical answer (illustrative) |
|---|---|
| 100 CFT of teak wood cost? | Roughly ₹1,50,000–₹2,50,000 at ₹1,500–₹2,500/CFT (varies by grade & region) |
| 100 CFT of river sand cost? | Roughly ₹4,000–₹5,500 at ₹40–₹55/CFT (varies by region & sand type) |
| 100 CFT of granite slab cost? | Roughly ₹35,000–₹60,000 depending on color & finish grade |
| How many CFT in a standard tractor trolley? | Roughly 55–100 CFT depending on trolley size (see our Sand Calculator) |
| 100 CFT equals how many CBM? | ≈ 2.83 CBM (100 × 0.0283168) |
These figures are meant as a rough starting point for budgeting, not a quote — actual prices vary significantly by region, supplier, material grade, and current market rates. Use the calculator above with your supplier's actual quoted rate per CFT for an accurate cost.
Conversion factors at a glance
A quick reference for the multiplier or divisor this calculator applies for each starting unit.
| Starting unit | Operation | Factor |
|---|---|---|
| Feet | None needed | 1 |
| Inches | Divide by | 1,728 |
| Yards | Multiply by | 27 |
| Meters | Multiply by | 35.3147 |
| Centimeters | Divide by | 28,316.85 |
Quick recap
Cubic feet is always Length × Width × Height once all three measurements are in the same unit. Feet need no conversion; inches divide by 1,728; yards multiply by 27; meters multiply by roughly 35.31; centimeters divide by roughly 28,317. This calculator applies the right conversion automatically based on the unit you select, and shows the result in cubic feet, cubic meters, and cubic yards together, with an optional cost calculation for timber and stone buyers.
📖 How to use this calculator
Frequently asked questions
How do I calculate cubic feet?
Measure the length, width and height of the item or space in feet, then multiply the three numbers together: Length × Width × Height = Cubic Feet.
How do I calculate cubic feet from inches?
Multiply length, width and height in inches together, then divide the result by 1,728 (since there are 1,728 cubic inches in one cubic foot).
How do I calculate cubic feet from meters or centimeters?
Multiply length, width and height in meters together, then multiply by 35.3147 to convert cubic meters to cubic feet. For centimeters, multiply the three measurements together and divide by 28,316.85.
What is CFT used for in the timber and stone trade?
CFT (Cubic Feet) is the standard unit for pricing timber, wood, marble and granite in India, typically measured as length and width in feet with thickness in inches.
Is this tool free?
Yes, completely free with no signup required.
Can I calculate an irregular shape with this tool?
Split the shape into regular rectangular sections, calculate each one separately, and add the results together for the total cubic feet.
What's the difference between cubic feet and square feet?
Square feet measures a flat area (length × width only); cubic feet measures volume, adding a third dimension — height or depth — to the calculation.
Does this account for the wall thickness of a container?
No, enter the internal (usable) dimensions of a box or container directly for an accurate result, since outer dimensions include material thickness that isn't available for storage.
Why do I need cubic yards as well as cubic feet?
Certain materials like concrete, mulch, and soil are commonly sold by the cubic yard rather than cubic foot, so having both figures available saves a separate conversion step.
Can I use decimal values for my measurements?
Yes, all fields accept decimal values like 2.5 or 10.75 for precise measurements.
Is there a separate mode for timber and stone trade calculations?
Yes, switch to "Timber/Stone (ft + inch)" mode at the top of the calculator to enter length and width in feet with thickness in inches directly, matching how the trade measures these materials.
Can I share my calculation result with someone else?
Yes, once you calculate a result, the page URL updates automatically with your inputs — copy that link and share it, and it will reopen with the same values and result pre-filled.