carboncred

Carbon Calculator

Upload GST data · Scope 1, 2 and 3 footprint · CCTS intensity · carbon credits to offset
0

Start from your GST data

Upload bills or returns and the calculator fills itself. You confirm every line before it is added.
Drop files here or — JSON, Excel or CSV, several at once. New here?
E-invoice JSONSigned e-invoices (IRN) from your suppliers or the e-invoice portal. Gives HSN, quantity and value for every item.
GSTR-1 JSONYour filed return from the GST portal. Its HSN summary gives sales by product, used as your production.
Purchase / sales registerExcel or CSV from Tally, Busy, Zoho or SAP with columns for HSN, quantity, unit and taxable value.
Paste rows or see the column format 
HSN,Description,Quantity,Unit,Taxable Value
27011920,Steam coal,1200,MTS,10800000
27101930,High speed diesel,45000,LTR,4050000
72142090,TMT bars,80,MTS,4400000
996511,Road freight,,,2500000
GSTR-2B does not contain HSN codes, so use e-invoices or your purchase register instead. Scanned or PDF bills cannot be read here; export them from your accounting software as Excel.
1

Company and product

What you make and how much — used for emission intensity (t CO2e per tonne).
Main product (HSN)
2

Scope 1 · direct emissions

Fuel burned on site and in your vehicles, refrigerant leaks, and process emissions.

Fuels

Refrigerant and SF6 leaks

Enter the kilograms topped up during the year; that equals what leaked.

Process emissions

IPCC Tier 1 defaults. Steel route factors already include the carbon in coke and other reducing agents used in the process — do not enter that coke again under fuels.
3

Scope 2 · purchased electricity

Grid electricity from your DISCOM bills.
Renewable power backed by certificates counts as zero under the market-based method. It is shown for information and lowers nothing else.
4

Scope 3 · purchased goods and services

Any GST HSN or SAC code. Enter the invoice value; add tonnes for steel, aluminium, cement, fertiliser or fuels to use their fixed factor.
Spend factors are in 2022 rupees. If your values are in current rupees, enter how much prices have risen (for example 1.15 for 15%). Leave at 1 to use values as entered.
5

Credit prices

Used for the cost estimate. Edit any price to match a quote.
No CCC has traded yet. The default ₹650 is the midpoint of an analyst estimate of ₹400–900. Voluntary prices are indicative listings from August 2026.