Convert CO₂e to Apparel Items
| t CO₂e | T-shirts |
|---|---|
| 0.5 | 71.43 |
| 1 | 142.9 |
| 1.5 | 214.3 |
| 2 | 285.7 |
| 3 | 428.6 |
| 5 | 714.3 |
| 10 | 1,429 |
| 20 | 2,857 |
| 50 | 7,143 |
| 100 | 14,286 |
Each row uses the same factor as the converter above: 1 t CO₂e = 142.9 T-shirts.
Get one email when the source dataset revises this number: old → new, and what it means.
A relatable way to express a CO₂e figure is as the number of clothing items whose production would emit the same amount. Because a garment’s footprint varies so much by type, the converter has a Garment selector — pick a T-shirt, underwear, a jacket or a pair of jeans. A standard cotton T-shirt is about 7 kg CO₂e to make, so a tonne of CO₂e is roughly 140 T-shirts — but only ~40 pairs of jeans. The figures are read live from the GreenCalculus MasterBrain and cited to Carbon Trust and textile life-cycle studies. It is a communication device for putting a number in perspective, not a greenhouse-gas accounting method.
Clothing footprints vary about fifteenfold by item — underwear ~2 kg, a T-shirt ~7, a jacket ~18, a pair of jeans ~25 kg CO₂e — and roughly double again if you count the use phase (washing, drying, ironing). This is the most variable of our equivalencies: use the Garment selector to pick your item (it defaults to a T-shirt), and treat every figure as indicative.
Pick your garment with the Garment selector, then divide the CO₂e in tonnes by that item’s footprint. A cotton T-shirt is 0.007 t (7 kg), so 1 t CO₂e ≈ 140 T-shirts. Heavier items count for more — the same tonne is only ~40 pairs of jeans.
Apparel items = tonnes CO₂e ÷ 0.007 (≈ × 140, on a T-shirt basis). Reverse: tonnes CO₂e = items × 0.007. The 0.007 t (7 kg) is a cotton T-shirt’s production footprint; for other garments use the figures in the ladder below. The converter reads the value live from the MasterBrain.
Clothing footprints by garment
The four options in the Garment selector, on a production (cradle-to-gate) basis, and how many of each a tonne of CO₂e represents. Indicative — assembled from textile LCAs, so they vary with material, source and method.
| Garment | ≈ CO₂e (production) | Items per tonne CO₂e |
|---|---|---|
| Underwear / socks | ~2 kg | ~500 |
| Cotton T-shirt (default) | ~7 kg | ~140 |
| Polyester jacket | ~18 kg | ~55 |
| Pair of jeans | ~25 kg | ~40 |
How the equivalency works
The figures come from Carbon Trust product-footprinting work and published textile life-cycle assessments, which estimate the CO₂e to grow or make the fibre, spin and knit or weave it, dye and finish it, and cut and sew the garment. Multiplying by the type of garment gives its production footprint; the converter runs that backwards, from a CO₂e figure to a count of items.
Why the range is so wide
A garment’s footprint depends on how much material it contains, what that material is, and how it’s made. A pair of jeans uses far more fabric than a T-shirt, and denim is processed and washed heavily; a synthetic jacket carries the footprint of oil-based polyester. Underwear is small and light. So “an apparel item” only means something once you say which garment.
The use phase can double it
These are production figures. Washing, drying and ironing a garment over its life often adds as much CO₂ again — which is why a cotton T-shirt quoted at ~7 kg to make can be ~15 kg over a full lifetime. Washing cooler, air-drying and keeping clothes longer are the biggest levers a wearer controls.
CO₂e to apparel items conversion table
Items for each CO₂e figure, on the default (cotton T-shirt) basis. To reverse any row, multiply the items by 0.007 tonnes of CO₂e per T-shirt.
| t CO₂e | T-shirts (÷ 0.007) |
|---|---|
| 0.05 | 7 |
| 0.1 | 14 |
| 0.5 | 71 |
| 1 | 143 |
| 5 | 714 |
| 10 | 1,429 |
And the reverse — T-shirts to the CO₂e they represent:
| T-shirts | t CO₂e (× 0.007) |
|---|---|
| 10 | 0.07 |
| 100 | 0.70 |
| 143 | 1.00 |
| 1,000 | 7.0 |
~7 kg CO₂e per cotton T-shirt (production / cradle-to-gate; Carbon Trust and textile LCAs). Highly garment- and boundary-dependent: underwear ~2 kg, a jacket ~18, jeans ~25 — and roughly double for a full lifetime including the use phase (a T-shirt ~15 kg).
What “apparel items” does and doesn’t mean
Clothing equivalencies are relatable but unusually variable. Three caveats keep the comparison honest.
The garment matters most
A single “apparel item” number is only meaningful with the garment attached — a T-shirt and a pair of jeans differ by more than 3×, and materials (cotton, polyester, wool) differ again. The default is a cotton T-shirt; use the ladder for anything else.
It’s production, not the whole life
The figure covers making the garment, to the point it leaves the factory. It excludes the use phase (washing and drying), which can roughly double it, and disposal. Quote it as “to make”, not “over its life”, unless you use the higher lifetime figure.
It’s for communication, not accounting
An equivalency is a way to describe a CO₂e figure, not a way to calculate one. Never enter “apparel items” into a greenhouse-gas inventory as if it were an activity — your inventory already holds the CO₂e directly. Use this converter to make a number relatable in a report or presentation, and name the garment and basis.
Where the conversion is used
- Fashion and consumer communication. Clothing is something everyone buys, so a “T-shirts” or “pairs of jeans” yardstick is intuitive for talking about the footprint of fast fashion or a wardrobe.
- Behaviour and reuse context. Illustrating the saving from buying less, buying secondhand, or washing and keeping clothes longer.
- Alongside other equivalencies. A garment is one of many relatable units; the CO₂ equivalencies calculator converts a figure into cars, homes and more at once (method: the CO₂ equivalencies methodology), and the plastic bottles and kg of beef converters are other product-footprint siblings.
Enter the CO₂e in tonnes, not kilograms — the factor is tonnes of CO₂e per item. If your figure is in kilograms, divide by 1,000 first. Rule of thumb: one tonne of CO₂e ≈ 140 cotton T-shirts, or ~40 pairs of jeans. Always name the garment. Browse the other emissions unit converters for related conversions.
Frequently Asked Questions
Divide the CO₂e (in tonnes) by 0.007, the tonnes of CO₂e to produce a cotton T-shirt — the same as multiplying by about 140. For example, 0.5 tonnes CO₂e ≈ 71 T-shirts. Heavier garments count for more (a pair of jeans is ~25 kg, so ~40 per tonne). To reverse it, multiply the items by the per-item figure.
It depends heavily on the garment. Production figures: underwear ~2 kg, a cotton T-shirt ~7 kg, a polyester jacket ~18 kg, a pair of jeans ~25 kg CO₂e. Including the use phase (washing and drying) roughly doubles them — a T-shirt is ~15 kg over a full lifetime. This converter uses the T-shirt production figure by default.
A cotton T-shirt is the most recognisable single garment, so it’s the clearest default. Because clothing footprints vary about fifteenfold by item, the page shows a garment ladder (underwear to jeans) alongside it so you can pick the right one.
A pair of jeans uses far more fabric than a T-shirt, and denim is processed, dyed and washed heavily during manufacture. So a pair of jeans (~25 kg CO₂e) is more than three times a cotton T-shirt (~7 kg). Material and how much of it a garment uses are the main drivers.
No — these are production figures, to the factory gate. Washing, drying and ironing over a garment’s life often add as much CO₂ again, which is why a T-shirt quoted at ~7 kg to make is ~15 kg over its lifetime. Washing cooler and air-drying are the biggest levers a wearer controls.
The default is a cotton T-shirt. Other materials differ — polyester carries an oil-based footprint, wool is higher again per kg — so a specific garment can vary from the figure. The ladder gives common examples; treat all of them as indicative.
No — an equivalency describes a CO₂e figure, it doesn’t calculate one. Your inventory already contains the CO₂e directly. Use this converter to make that number relatable in a report or presentation, not as an accounting input.