Form Field Cost Calculator

Every unnecessary form field costs you conversions. Calculate exactly how much revenue you're losing — and what simplifying could recover.

Your Checkout Details

How many visitors reach checkout per month?

Research shows 3-5% per unnecessary field

Annual Revenue Lost to Extra Fields

RM 526,467

5 unnecessary fields costing you every month

Current Completion

45%

Projected Completion

54.7%

Lost Orders / Month

292

Monthly Recovery

RM 43,872

Cost Per Extra Field

Each field below is an unnecessary friction point draining revenue from your checkout.

Field #8
-RM 8,100/mo
Field #9
-RM 8,424/mo
Field #10
-RM 8,761/mo
Field #11
-RM 9,111/mo
Field #12
-RM 9,476/mo

Common Fields You Can Remove or Simplify

These fields are frequently unnecessary and add friction without value.

Phone Number (secondary)

Most stores only need one contact method. Remove the landline or secondary phone field.

Company Name

Unless you sell B2B, this field adds friction for 95%+ of buyers.

Address Line 2

Make this optional and collapsed by default. Most addresses fit in one line.

Fax Number

It is 2026. Remove this.

Confirm Email

Typo-checking can be done with inline validation instead of a duplicate field.

"How did you hear about us?"

Move this to the post-purchase thank-you page where it won't cost you conversions.

Separate Billing Address

Default to "same as shipping" with an opt-in toggle. Most orders ship to the billing address.

Frequently Asked Questions

How much does each extra form field reduce conversions?

Research from the Baymard Institute and other UX studies consistently shows that each unnecessary form field reduces checkout completion rates by approximately 3-5%. The exact impact depends on the field type, device, and audience — but the effect compounds with every additional field.

What is the ideal number of checkout form fields?

The average optimized checkout has 7-8 form fields. Top-performing Shopify stores often get down to 6-7 by using smart defaults, auto-detection (like postal code lookup for city/state), and removing non-essential fields like company name or secondary phone.

Does this calculator account for mobile vs desktop?

This calculator uses a single drop-off rate for simplicity. In practice, the cost per extra field is higher on mobile — where typing is harder and screens are smaller. If mobile makes up a large share of your traffic, consider using the higher end of the 3-5% range.

What fields should I remove first?

Start with fields that add zero value to order fulfillment: secondary phone, company name, fax, "how did you hear about us," and confirm email. Then look at fields you can auto-fill or collapse — like making Address Line 2 optional and defaulting billing to shipping address.

Will removing fields actually increase my revenue?

Yes — if the fields you remove are genuinely unnecessary. A/B tests by major ecommerce brands consistently show that shorter checkout forms convert better. The key is removing fields that do not contribute to fulfilling the order, not removing required information like the shipping address.

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