What exactly does a GST calculator do?
The GST calculator serves as a digital help by enabling users, whether individuals or businesses, to quickly determine the GST amount applicable to a given sum.
The calculator takes into account the total value of goods or services provided, along with the applicable GST percentages, to determine the exact GST amount to be charged on the value given as an input.
Benefits of using our All In One calculator to calculate GST
Using our all in one calculator to determine the GST amount can be of` numerous advantages, as mentioned below

Surety  Performing GST calculations manually or even using conventional calculators carries the risk of errors. Even a minor typing mistake could result in noncompliance of GST rules. The GST Calculator makes sure precision by automating the process and removing the potential for manual mistakes.

Fast Calculations  The calculator provides instant results, offering a massive timesaving advantage over manual calculation methods.

Simplicity The interface being so simple it acts as an added advantage, just input the original price, choose the applicable GST rate, and receive precise GST payable or receivable amounts in seconds.

Adaptive The tool is so adaptive, not only you will get a total amount on GST rate but you will also be able to calculate how much GST is added in a particular sum of amount.
Calculating GST from the Amount Excluding GST
This simply means, you want to add GST to an amount on which tax is yet to be applied.
Let’s understand with a simple example, suppose you bought an item for Rs. 1000, but you are yet to apply GST on it.GST rate happens to be 18% in this case. So the calculation will be as follows

cgst = (amount * rate) / 200 : (1000*18)/200=90

sgst = (amount * rate) / 200 : (1000*18)/200=90

igst = (amount * rate) / 100 : (1000*18)/100=180

tax = cgst + sgst : 90+90=180
Hence, the total amount with GST will be as follows:
Total amount = Actual amount + GST Rate
Total Amount = 1000 (actual amount) + 18 (GST rate) = 1180
Calculating GST from the Amount Including GST
This simply means, the amount you will input will include both Actual amount and GST component, calculation will help you in calculating both individually.
gst = (amount * rate) / (100 + rate)
: (1000*18)/(100+18) = 152.54
cgst = gst / 2
: 152.54/2 =76.27
sgst = gst / 2
: 152.54/2 =76.27
igst = 0
: 0
tax = cgst + sgst
: 76.27+76.27 =152.54
Original Amount = Amount including GST / 1 + GST rate / 100
OA = 1000 / 1 + 18 / 100
OA = 1000 / 1 + 0.18
OA = 1000 / 1.18
OA = 847.45
So, the Original Amount before GST was 152.54
How to use our GST Calculator

STEP  1
Move the scale or directly type the amount : To calculate GST Inclusive type the amount that already contains GST and to calculate GST exclusive type the original amount of the product.

STEP  2
Select the GST rates : The screen before you already has standard GST rates applicable according to Indian GST rules and regulations.
Red : If you have typed the amount that already includes GST click on the red buttons of GST rates. The color red indicates GST inclusion.
Green : If you have typed the actual amount of the product without GST, click on the green buttons of GST rates. The color green indicates GST exclusion .

STEP  3
Move the scale or directly type the amount : You will see a detailed calculation once you select the rates. If you have opted for GST inclusion it will show you CGST, SGST, IGST, GST tax and the total amount. Here the total amount is the Original price of the product/service.
Notice how IGST remains 0,
it is because IGST is applicable only on interstate supplies. When goods or services are supplied within the same state, CGST (Central Goods and Services Tax) and SGST (State Goods and Services Tax) are applicable instead of IGST. So, if you're calculating the actual amount from a total that already includes GST for an intrastate transaction, you'd typically separate the CGST and SGST components from the total.
In the same way, you will see a detailed calculation, if you have opted for GST exclusion that is an actual price of product or service. It will show CGST, SGST, IGST, GST tax and Total Amount. This total amount is the one in which the GST component is added.