Online FREE Estimate Generator – Create Instant Estimates

Generate unlimited online estimates for FREE with the InvoiceOwl estimate generator. Create, preview, send, and download custom estimates within a few seconds.

Upload only jpeg and png file.
Add Logo
Item Price Qty Total
Subtotal $0.00
Discount $
Tax $
Shipping $
Total (USD) $0.00

Why Should I Subscribe to InvoiceOwl Software?


Free Trial

Try InvoiceOwl for free without making any commitments.


Re-use the Template

Create a template once and re-use it unlimited times.


Save the Data

Store the data you fed for making the next estimate even quicker.

What is an Online Estimate Generator?

An online estimate generator is a web-based tool that helps you create online estimates. It lets you create estimates with all the necessary information and instantly download the same as a PDF document. For example, the InvoiceOwl estimate generator allows you to design and make estimates on the go.

InvoiceOwl’s online estimate software lets you create professional estimates from wherever you are! All it needs is an internet connection.

Estimate Generator Features

  • Create and send accurate estimates

    Accurate Estimates Instantly

    Create professional estimates easily with all the essential information in just a matter of minutes.

  • Edit your estimates

    100% Editable

    Edit your estimates according to your brand logo and your company contact information.

  • Effective professional estimates templates

    Effective Templates

    Don’t waste time by starting from scratch, make use of professional estimate templates for maximum effectiveness.

  • Access estimates from anywhere

    Access From Anywhere

    Create estimates from anywhere irrespective of the device or the browser.

  • Automate Financial Information


    Automate cost, tax, and discount calculation and reduce touchpoints to avoid discrepancies.

  • Easily convert the estimates


    Easily convert the estimates into invoices with a single click and get paid faster.

Essential Elements For Every Online Estimate Generator

  • Title

    You don’t want to confuse the client, right? Therefore, the estimate you generate must be titled “Estimate” clearly. Otherwise, the client might misunderstand your estimate with an invoice.

    Moreover, the document is not considered legally binding without the title. And if it is not clearly mentioned, the client might misplace it too.

  • Estimate Date

    The estimate date is the day the estimate is issued. This is of a significant value in the estimate. It helps to dictate how long this estimate is valid. Other than that, the estimate date also helps businesses to manage, track, and sort estimates.

  • Estimate Number

    The estimate number is the unique identification number assigned to the estimate. Estimate number helps to keep track of estimates and organize them. The estimate ID number plays a vital role when cross-checking the corresponding invoice.

    The number can be numerical or a mixture of digits and alphabets as well. For example, the fourth estimate for the “xyz” client could be numbered as “#xyz04”. Or another method of numbering the estimate is by date. For example, the seventh estimate of the month could be numbered as “Nov/21#07”.

  • Valid Until Date

    The “valid until” date is the date until when the estimate is valid. Generally, businesses provide a time to sign the contract. And the valid until the date is the last date for signing the contract at the quoted cost. If the business fails to secure the deal, they might have to ask for a revised estimate.

  • Vendor’s Company Logo

    The vendor company logo is for branding the estimate. The logo helps customers to verify the estimate’s genuineness. Moreover, estimates are a great opportunity for vendors to market the brand. Therefore, your logo adds to our professionalism.

  • Client’s Company Details

    If you are sending an estimate, you must mention the addressee, right? The Client’s company information is similar to the “To” on any document. It helps you send estimates to the right person. Furthermore, the client’s business information reduces the chances of misplacing the generated estimates.

    Therefore, you need to include the client’s physical address, contact number, email address.

  • Vendor’s Company Details

    Just like all the legally binding documents, every estimate needs to mention whom it is from. The vendor company’s details state the sender’s details. Without the vendor’s contact information, the customer would not know whom to contact in case of doubt and even worse whom to pay.

  • Shipping Address

    Shipping address is the address where you are supposed to deliver the goods. The shipping address doesn’t need to be the same as the client’s address. Therefore, you need to mention it clearly on the estimate. Other than that, the shipping address justifies the shipping costs.

    However, if the billing and shipping addresses are the same, you can always write —same as the billing address, in the column.

  • Purchase Item Details

    Purchase item details are mandatory for every estimate. Each product/service to be rendered should be mentioned with its name, description, quality, rates, and the total estimated cost.

    Line items provide a cost breakup of the total amount and maintain transparency and double ensure the total number of items to be sold.

  • DiscountsIf you are offering discounts, mention the discounted amount in the estimate. Subtract the discount amount from the subtotal and show the calculation as well. Discounts attract more clients and early-birds discount encourages them to pay you as soon as possible.
  • Tax Rates

    The law binds the customer to pay tax whenever they buy any goods. Thus, mentioning the tax rates and respective calculations is essential.

  • Shipping Charges

    Generally, the cost of the goods does not cover the shipping cost. In such cases, businesses charge shipping fees in addition to the subtotal. Not showing the shipping charges might confuse the customer.

  • Terms and Conditions

    Terms and conditions guide the customer in making payments. Terms and conditions let the customer know all the available payment gateways they can use to pay you, instructions for claiming a refund, and consequences if they miss to pay you on time. These terms and conditions help your business avoid lawsuits.

  • Total

    The estimated amount that the customer has to pay the business is mentioned as the —estimated amount. The customer is supposed to pay the vendor the amount mentioned at the time agreed in the contract. This is the most highlighted part of the estimate.

Tips for Creating Estimates

An estimate is one of the first documents that you as a vendor send your customers. Therefore, estimates set the first impression of you as a brand on your clients. Thus, estimates need to be professional and accurate.

So, here are a few quick tips for creating effective estimates.

  • Create estimates as preciseBe Precise

    Create estimates as precise as possible. Clients do not appreciate hidden costs at all. It may hamper your brand image as well. Thus, include all the fees you charge.

  • Keep it simpleKeep it Simple

    The easier it is to understand, the more you have the chance to get it accepted by the client. Thus, use the InvoiceOwl estimate templates and create easily understandable estimates in no time.

  • You need to send a contract along with itSign a Contract

    When sending an estimate, you need to send a contract along with it. This shows your professionalism and protects you from future misunderstandings.

Create Your Estimate in Just a Matter of Seconds

InvoiceOwl is an easy-to-use, free estimate generator. It allows you to create customized estimates with pre-designed templates for maximum effectiveness. So, follow these simple steps to create an estimate in just a few seconds.

Step 1: Select and Customize the Template

Click on the “Settings” button in the upper right corner to customize the free estimate template.

It will open the settings window.

Select from the six predefined templates for creating branded and professional-looking documents.

Now, customize the:

  • Currency
  • Currency format
  • Date format
  • Number of decimal digits
  • Logo position
  • Category of shipping address

Once you have customized the template, click on the —Save.

Select estimate template as per your need
Upload your business logo

Step 2: Add a Logo

To upload your business logo, click on the “add logo” box, and upload the logo in an image format (such as png, jpg, or svg) from your computer.

Step 3: Add your Business Address

Tap on the box “From” to fill in your business name, contact number, mailing address, and email address.

Add your business address
Add line items to the estimates

Step 4: Add Customer’s Contact Details

To enter the customer’s address, click on the “Bill To” field and enter the name, contact number, physical address, and email address.

Similarly, enter the shipping address. If the shipping address is the
same as the billing address, check the “Shipping address same as billing address” option.

It will auto-fill the shipping address the same as the entered “Bill To”.

Step 5: Estimate Details

Next are the estimate details such as:

  • Estimate number
  • Estimate date
  • Valid until date
Enter estimate details
Add line items to the invoice

Step 6: Add Line-items

To add line items to the estimate, enter the sale item’s name, description, price, and quantity. And it will automatically calculate the total cost of the item.

Once you have entered the item details, hit the “Add New Item” button.

You can add as many items as you want to the estimate, and our free estimate generator will automatically calculate the subtotal and total.

Step 7: Balance Due Calculation

To calculate the total balance due, you need to enter:

  • Any discount offered
  • Taxes applicable
  • Shipping charges

Our estimate creator lets you feed discounts and taxes as percentages or directly in fixed value amounts.

Enter the shipping charges, and it will automatically calculate the total and the estimated amount to the decimal digits you previously selected in Settings.

Add balance due calculation
To add the notes and terms

Step 8: Add Notes and Terms

Adding notes and terms helps you personalize the estimate and guide your customers in making the payment, such as providing your bank details for a wire transfer.

To add the notes and terms, select the respective field and type in your notes and/or terms and conditions.

That’s all!

You have now generated a professional estimate.

How to Send an Estimate Using the InvoiceOwl Estimate Creator

Once you have generated the estimate, you can preview it online.


Click on the preview button in the menu on the right side.

Once the preview is generated, you can change the estimate template without losing any data at the preview stage too.

You can change the template without losing any data at preview stage
When you are satisfied send invoice

Sending estimate Online

When you are satisfied with how it looks in the preview, click on the send button in the menu on the right side.

It will ask you to confirm the “From & Bill To” email addresses.

Make sure the email addresses are correct and hit the send button.

This will send the estimate directly to the “Bill To” email address as a PDF file.

Saving and Sending the Estimate Offline

If you want to save the estimate to send it later offline, you can click on the “download” button, and you will get the printable PDF file, which you can either save as a copy on your computer, or print-off to send via offline means.

Save the invoice to send it later offline


What are the Benefits of Using Our Estimate Generator?

  • Save time creating invoices from scratch
    Time Efficiency

    This online estimate maker narrows down the possibility of human errors like typing mistakes and mathematical errors by eliminating the most human touchpoints.

  • Generate invoices for free
    Cost Efficiency

    Our estimate generator lets you generate estimates for free. Moreover, if you want to edit an estimate, you can do that without paying extra costs.

  • Send the invoices via email or via mail
    Send it Online or Offline

    This estimate creator provides you with a professional estimate as a PDF file. Therefore, it lets you send the estimate via email.

  • Create and send error-free invoices online
    Error-free Estimates

    This online estimate maker narrows down the possibility of human errors like typing mistakes and mathematical errors by eliminating the most human touchpoints.

  • Create and send invoices without any registration or commitment
    No Commitments Required

    Since our free estimate maker is free to use, you can create and send estimates without any registration or commitment. Get your hands on it for free before you invest.

Get FREE Estimates

Frequently asked questions

  • On which web browsers do the InvoiceOwl online estimate generator run?

  • Do I need to register to use this online estimate creator?

  • Can I edit the estimate I created?

  • Is creating estimates with InvoiceOwl online estimate generator free?

  • How do I remove an item from the estimate?

  • Can I generate PDF estimates?

  • What “Valid Until” date?

  • What is the difference between estimates and invoices?

  • What is the difference between purchase orders and estimates?

  • What is the difference between credit memos and estimates?

  • Can I charge for estimates?

  • How can I convert an estimate into an Invoice?

  • Do I need to install any software?

  • What are estimated templates?

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